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Nagoya Journal of Medical Science  2014;76(1-2):195-201.
Spinal epidural hematoma (SEH) is an uncommon disorder, and chronic SEHs are rarer than acute SEHs. However, there is few reported involving the bone change of the vertebral body in chronic SEHs. We present a case report of lumbar epidural hematoma that required differentiation from extramedullary spinal tumors by a long process because the CT scan revealed scalloping of the vertebral body and review the relevant literature. A 78-year-old man had experienced a gradual onset of low back pain and excruciating pain in both legs. Lumbar MRI on T1-weighted images revealed a space-occupying lesion with a hyperintense signal relative to the spinal cord with no enhancement on gadolinium adminisration. Meanwhile, T2-weighted images revealed a heterogeneous intensity change, accompanying a central area of hyperintense signals with a hypointense peripheral border at the L4 vertebra. Moreover, the CT scan demonstrated scalloping of the posterior wall of the L4 vertebral body which is generally suspected as the CT finding of spainal tumor. During the epidural space exploration, we found a dark red-colored mass surrounded by a capsular layer, which was fibrous and adhered to the flavum and dura mater. Microscopic histological examination of the resected mass revealed a mixture of the relatively new hematoma and the hematoma that was moving into the connective tissue. Accordingly, the hematoma was diagnosed as chronic SEH. The particular MRI findings of chronic SEHs are helpful for making accurate preoperative diagnoses of this pathology.
PMCID: PMC4345727  PMID: 25130006
chronic lumbar epidural hematoma; spontaneous spinal epidural hematoma; scalloping; MRI findings
2.  Spontaneous epidural hematoma of the spine associated with oral anticoagulants: 3 Case Studies 
•Spontaneous epidural hematoma of the spine (SEHS) is an extremely rare entity.•Early diagnosis and treatment showed to have the best outcome.•SESH should be suspected in every acute medullary syndrome with spinal pain, motor and/or sensory deficit.
Spontaneous epidural hematoma of the spine (SEHS) is an extremely rare entity. Patients known to have thrombophilia or on anticoagulant drugs are the most affected. It is generally caused by a rupture of the postero-internal vertebral venous plexus secondary to minor barotrauma such as cough, peridural catheter insertion...
Early diagnosis and treatment showed to have the best outcome.
Cases report
We report 3 cases of spontaneous epidural hematoma in patients treated by acenocoumarol, which occurred without any provocative factor. All 3 patients were treated with decompressive laminectomy.
We described the MRI findings and discussed the spontaneity of the entity. Our present case studies and the review of the literature showed that early diagnosis and management of SEHS can lead to improvement of the neurological state and avoid definitive motor and sensitive deficit.
This rare entity should be suspected in every acute medullary syndrome with spinal pain, motor and/or sensory deficit. In order to decrease the sequelae, neurologically unstable patients should benefit from early diagnosis and urgent surgical decompression.
PMCID: PMC4529632  PMID: 26074484
Spontaneous epidural hematoma of the spine; Oral anticoagulants; Acenocoumarol
3.  Case Report: Cauda Equina Syndrome Associated With an Interspinous Device 
Although postoperative spinal epidural hematoma (SEH) is not uncommon, hematomas that require surgery are rare. Cauda equina syndrome (CES) may be associated with postoperative SEH. In these cases, early recognition and emergency decompression can prevent further damage and better neurologic recovery.
Case Description
A 41-year-old man underwent two-level discectomy with insertion of an interspinous spacer at L3-4 and L4-5 because of low back pain and radiculopathy. Eight hours after the operation, the patient developed CES. MRI revealed SEH compressing posteriorly at the L3-4 level. On emergency decompression and hematoma evacuation, the interspinous spacer had obstructed the laminotomy site at L3-4 completely, blocking drainage to the drain. The patient experienced complete neurologic recovery by 2 months followup.
Literature Review
Many studies report risk factors for SEH. However, postoperative SEH can also be encountered in patients without these risks. One study reported a critical ratio (preoperative versus postoperative cross-sectional area) correlated with postoperative symptoms, especially in those with CES. The propensity to develop CES is likely dependent on a number of patient-specific factors.
Clinical Relevance
Surgeons should be aware that patients without risk factors may develop acute CES. Wider laminotomy (larger than half of the device size) may help to prevent this complication when one uses the compressible type of device, especially in patients with relatively small lamina.
PMCID: PMC3348300  PMID: 21870210
4.  Infected epidural hematoma of the lumbar spine associated with invasive pneumococcal disease 
Spinal epidural abscess (SEA) and spinal epidural hematoma (SEH) are neurologic emergencies with distinct etiologies and treatment. Despite similarities on magnetic resonance imaging (MRI), their differentiation is usually possible with meticulous history taking and neurologic examinations. We report an unusual case of SEA that developed from preceding SEH, posing a diagnostic challenge to physicians. A 65-year-old diabetic man suddenly experienced back pain and weakness of both legs when he lifted heavy luggage. He was afebrile, and his laboratory tests were mostly unremarkable. Spinal MRI consisting of T1-weighted, T2-weighted, and fat-suppressed T2-weighted images revealed an epidural mass over the L2-L4 spinous process. He was diagnosed with SEH based on his symptoms and MRI findings, and was treated conservatively using steroid pulse therapy. Despite initial improvement, he suddenly developed into septic shock and coma on the 10th hospital day, and died shortly thereafter. An autopsy revealed massive pus accumulation in the lumbar epidural space and brain, and a postmortem diagnosis of infected SEH associated with invasive pneumococcal disease was established. Serial MRI studies, including diffusion-weighted and/or gadolinium-enhanced T1-weighted images are warranted in patients with a presumed diagnosis of SEH receiving steroid therapy to detect such infectious transformation.
PMCID: PMC4352647  PMID: 25767594
Invasive pneumococcal disease; magnetic resonance imaging; spinal epidural abscess; spinal epidural hematoma
5.  Haemophilia A presenting as spontaneous spinal epidural haematoma in a 3-month-old infant 
BMJ Case Reports  2010;2010:bcr0520102997.
Spinal epidural haematoma (SEH) is a rare complication of haemophilia. A 3-month-old boy presenting with non-traumatic acute onset quadriparesis was found to have SEH on MRI scan. On further investigations, diagnosis of severe haemophilia A was confirmed. He responded well to conservative treatment with replacement of factor VIII without any need for surgical decompression. Neurological recovery was complete. We believe this is the youngest reported case of haemophilia presenting with spontaneous SEH. Another peculiarity of this case is absence of excessive bleeding due to forceps and vacuum application, circumcision and intramuscular injection, even in the presence of severe haemophilia. This case calls attention to the clinical features, radiological appearances and management options of this rare complication of SEH in people with haemophilia.
PMCID: PMC3027406  PMID: 22791488
6.  Symptomatic Extensive Thoracolumbar Epidural Hematoma Following Lumbar Disc Surgery Treated by Single Level Laminectomy 
Asian Spine Journal  2012;6(2):152-155.
Spinal epidural hematomas (SEHs) are rare complications following spine surgery, especially for single level lumbar discectomies. The appropriate surgical management for such cases remains to be investigated. We report a case of an extensive spinal epidural hematoma from T11-L5 following a L3-L4 discectomy. The patient underwent a single level L4. A complete evacuation of the SEH resulted in the patient's full recovery. When presenting symptoms limited to the initial surgical site reveal an extensive postoperative SEH, we propose: to tailor the surgical exposure individually based on preoperative findings of the SEH; and to begin the surgical exposure with a limited laminectomy focused on the symptomatic levels that may allow an efficient evacuation of the SEH instead of a systematic extensive laminectomy based on imaging.
PMCID: PMC3372553  PMID: 22708022
Epidural; Hematoma; Spine; Surgery; Management; Emergency; Postoperative
7.  Chronic pure radiculopathy in patient with organizing epidural hematoma around C8 nerve root 
European Spine Journal  2012;21(Suppl 4):450-452.
Spontaneously occurring spinal epidural hematomas are uncommon clinical findings, and the chronic form is the rarest and its most frequent location is the lumbar spine. Pure radicular involvement is far less frequent than myelopathy. We report a case of progressive radiculopathy in a 52-year-old man with spontaneously occurring cervical epidural hematoma (SCEH). The patient had left hand weakness and numbness for 4 months. MRI scan showed small space-occupying lesion around left 8th cervical nerve root. After surgery we confirmed chronic organizing epidural hematoma. To the best of our knowledge, this is the second reported case in the worldwide literature of pure radiculopathy in a patient with chronic SCEH.
PMCID: PMC3369032  PMID: 22249307
Spontaneous epidural hematoma; Radiculopathy; Chronic
8.  Spinal Epidural Hematoma after Thoracolumbar Posterior Fusion Surgery without Decompression for Thoracic Vertebral Fracture 
Case Reports in Orthopedics  2016;2016:6295817.
We present a rare case of spinal epidural hematoma (SEH) after thoracolumbar posterior fusion without decompression surgery for a thoracic vertebral fracture. A 42-year-old man was hospitalized for a thoracic vertebral fracture caused by being sandwiched against his back on broken concrete block. Computed tomography revealed a T12 dislocation fracture of AO type B2, multiple bilateral rib fractures, and a right hemopneumothorax. Four days after the injury, in order to promote early orthostasis and to improve respiratory status, we performed thoracolumbar posterior fusion surgery without decompression; the patient had back pain but no neurological deficits. Three hours after surgery, he complained of acute pain and severe weakness of his bilateral lower extremities; with allodynia below the level of his umbilicus, postoperative SEH was diagnosed. We performed immediate revision surgery. After removal of the hematoma, his symptoms improved gradually, and he was discharged ambulatory one month after revision surgery. Through experience of this case, we should strongly consider the possibility of preexisting SEH before surgery, even in patients with no neurological deficits. We should also consider perioperative coagulopathy in patients with multiple trauma, as in this case.
PMCID: PMC4775781  PMID: 26989542
9.  Lumbar puncture complicated by spinal epidural hematoma in a child with leukemia 
Clinical Case Reports  2015;3(6):388-391.
Key Clinical Message
We report a case of spinal epidural hematoma (SEH) preceded by diagnostic lumbar puncture (LP) in a 5-year-old boy with acute lymphoblastic leukemia. MRI confirmed the presence of SEH between T7 and L5 levels, but the patient showed fast recovery during the next hours and conservative management was elected.
PMCID: PMC4498848  PMID: 26185634
Acute lymphoblastic leukemia; lumbar puncture; spinal epidural hematoma; thrombocytopenia
10.  Intracranial hemorrhage following lumbar spine surgery 
European Spine Journal  2012;21(10):2091-2096.
Intracranial hemorrhage is a serious but rare complication of spinal surgery, which can occur in the intracerebral, cerebellar, epidural, or subdural compartment.
To describe patients with intracranial hemorrhage after lumbar spinal surgery and present clinical and diagnostic imaging findings.
In this retrospective study, medical records of 1,077 patients who underwent lumbar spinal surgery in our tertiary referral neurosurgery center between January 2003 and September 2010 were studied. The original presentations of the patients before the surgical intervention were herniated lumbar disc, spinal canal stenosis, spondylolisthesis, lumbar spinal trauma, and lumbar spine and epidural tumor. The operations performed consisted of discectomy, multiple level laminectomy, stabilization and fusion, lumbar instrumentation, and lumbar spinal and epidural tumor resection.
Four cases developed intracranial hemorrhage including acute subdural hematoma (one case), epidural hematoma (one case), and remote cerebellar hemorrhage (two cases). The clinical and diagnostic imaging characteristics along with treatments performed and outcomes of these four patients are described and the pertinent literature regarding post-lumbar spinal surgery intracranial hemorrhages is reviewed.
Though rare, intracranial hemorrhage can occur following lumbar spinal surgery. This complication may be asymptomatic or manifest with intense headache at early stages any time during the first week after surgery. Dural tear, bloody CSF leakage, focal neurologic symptoms, and headache are indicators of potential intracranial hemorrhage, which should be considered during or following surgery and necessitate diagnostic imaging.
PMCID: PMC3463703  PMID: 22349967
Intracranial hemorrhage; Lumbar spine surgery; Remote cerebellar hemorrhage; Subdural hematoma; Epidural hematoma
11.  Cervical Epidural Hematoma after Chiropractic Spinal Manipulation Therapy in a Patient with an Undiagnosed Cervical Spinal Arteriovenous Malformation 
Cureus  null;7(8):e307.
Spinal epidural hematoma (SEH) occurring after chiropractic spinal manipulation therapy (CSMT) is a rare clinical phenomenon. Our case is unique because the patient had an undiagnosed cervical spinal arteriovenous malformation (AVM) discovered on pathological analysis of the evacuated hematoma. Although the spinal manipulation likely contributed to the rupture of the AVM, there was no radiographic evidence of the use of excessive force, which was seen in another reported case. As such, patients with a known AVM who have not undergone surgical intervention should be cautioned against symptomatic treatment with CSMT, even if performed properly. Regardless of etiology, SEH is a surgical emergency and its favorable neurological recovery correlates inversely with time to surgical evacuation.
PMCID: PMC4578713  PMID: 26430581
spinal epidural hematoma; chiropractic manipulation; spinal arteriovenous malformation
12.  Clinical Experience and Management of Cervico-Thoracic Epidural Hematoma 
Spinal epidural hematoma (SEH) causing acute myelopathy is rare. The usual clinical presentation of a SEH is sudden severe neck or back pain that progresses toward paraparesis or quadriparesis, depending on the level of the lesion. Recent studies have shown that early decompressive surgery is very important for patient's recovery. We experienced five patients of cervico-thoracic epidural hematomas associated with neurologic deficits that were treated successfully with surgical intervention.
PMCID: PMC2883060  PMID: 20539799
Intraspinal; Epidural; Hematoma; Laminectomy
13.  Cervicothoracic Spinal Epidural Hematoma after Anterior Cervical Spinal Surgery 
The purpose of this case report is to describe a rare case of a cervicothoracic spinal epidural hematoma (SEH) after anterior cervical spine surgery. A 60-year-old man complained of severe neck and arm pain 4 hours after anterior cervical discectomy and fusion at the C5-6 level. Magnetic resonance imaging revealed a postoperative SEH extending from C1 to T4. Direct hemostasis and drainage of loculated hematoma at the C5-6 level completely improved the patient's condition. When a patient complains of severe neck and/or arm pain after anterior cervical spinal surgery, though rare, the possibility of a postoperative SEH extending to non-decompressed, adjacent levels should be considered as with our case.
PMCID: PMC3053552  PMID: 21430984
Cervical spine; Complication; Hematoma
14.  Non Traumatic Spinal Epidural Haematoma in a Woman with HELLP Syndrome: A Case Report 
Spinal epidural haematomas (SEH) is a potentially reversible cause of spinal cord and nerve root compression which needs prompt surgical decompression for satisfactory neurological recovery. SEH occurs very rarely in pregnant woman with HELLP syndrome (hemolysis, elevated liver enzyme levels, and low platelet levels). Most of the SEH cases reported in HELLP syndrome in the literature are due to iatrogenic interventions. We report a still rarer case of non traumatic spinal epidural haematoma in a pregnant woman with HELLP Syndrome.
PMCID: PMC4316316  PMID: 25654010
HELLP syndrome; Non traumatic; Spinal epidural haematoma
15.  Idiopathic Spinal Subarachnoid Hemorrhage: A Case Report and Review of the Literature 
Global Spine Journal  2015;5(5):e59-e64.
Study Design Case report.
Objective Spinal subarachnoid hemorrhage (SSAH) makes up less than 1.5% of all the cases of subarachnoid hemorrhage. Most cases of spontaneous SSAH occur in association with coagulopathy, lumbar punctures, or minor trauma. Idiopathic SSAH is extremely rare with only 17 cases published. Idiopathic SSAH presents a diagnostic dilemma, and the appropriate investigations and treatment remain a matter of controversy. We report a case of idiopathic SSAH and a review of the literature regarding its clinical presentation, diagnosis, and treatment.
Methods A 73-year-old woman presented to the emergency department after spontaneously developing severe right leg and lower back pain while bending over to vomit. After a review of the patient's history and examination, the magnetic resonance imaging (MRI) of the thoracolumbar spine revealed T1 hyperintensity and T2 hypointensity, a diffusion-restricted collection at the T11–T12 level, and a posterior collection from L3 to S1 producing a mild displacement of the thecal sac.
Results The patient was taken for an L5 laminectomy. Intraoperatively, rust-colored, xanthochromic fluid was drained from the subarachnoid space, confirming SSAH. The thecal sac was decompressed. The cultures and Gram stains were negative. Computer tomography (CT) and CT angiography of the brain were normal. She recovered postoperatively with resolution of the pain and no further episodes of hemorrhage after 2 years of follow-up. Repeat thoracolumbar MRI, selective spinal angiogram, and six-vessel cerebral angiogram did not reveal pathology.
Conclusion We suggest a clinical algorithm to aid in the diagnosis and management of such patients.
PMCID: PMC4577320  PMID: 26430603
spinal; subarachnoid hemorrhage; treatment; diagnosis; idiopathic; spontaneous; guideline
16.  Spontaneous Resolution of Non-traumatic Cervical Spinal Subdural Hematoma Presenting Acute Hemiparesis: A Case Report 
Korean Journal of Spine  2012;9(3):257-260.
Spontaneous cervical SDH with no underlying pathology is a very unusual condition. To the best of the authors' knowledge, only two cases have been previously reported. A 48-year-old female patient was admitted to our emergency room due to severe neck pain following standing up position with rapid onset of hemiparesis. MRI revealed a dorsolateral subdural hematoma from C3-C5 with cord compression. An emergency laminectomy was planned, but motor weakness gradually improved during surgical preparation. The patient showed substantial clinical improvement and complete recovery was confirmed after 7 days of conservative management without surgical treatment. To determine a differential diagnosis distinct from other conditions such as cervical epidural hematoma, a lumbar spinal puncture was performed. Follow-up MRI performed 10 days after admission revealed complete resolution of the hematoma. We report an extremely rare case of spontaneous cervical spinal subdural hematoma (SDH), present a review of relevant literature, and discuss the etiology, pathogenesis, and prognosis of this case.
PMCID: PMC4431013  PMID: 25983826
Cervical; Spontaneous; Subdural hematoma
17.  Complications and pitfalls of lumbar interlaminar and transforaminal epidural injections 
Lumbar interlaminar and transforaminal epidural injections are used in the treatment of lumbar radicular pain and other lumbar spinal pain syndromes. Complications from these procedures arise from needle placement and the administration of medication. Potential risks include infection, hematoma, intravascular injection of medication, direct nerve trauma, subdural injection of medication, air embolism, disc entry, urinary retention, radiation exposure, and hypersensitivity reactions. The objective of this article is to review the complications of lumbar interlaminar and transforaminal epidural injections and discuss the potential pitfalls related to these procedures. We performed a comprehensive literature review through a Medline search for relevant case reports, clinical trials, and review articles. Complications from lumbar epidural injections are extremely rare. Most if not all complications can be avoided by careful technique with accurate needle placement, sterile precautions, and a thorough understanding of the relevant anatomy and contrast patterns on fluoroscopic imaging.
PMCID: PMC2682416  PMID: 19468908
Back pain; Spinal injection; Epidural steroid injection; Lumbar interlaminar epidural; Lumbar transforaminal epidural; Complications; Safety; Risk management
18.  Spontaneous chronic epidural hematoma of the lumbar spine mimicking an extradural spine tumour 
European Spine Journal  2012;22(Suppl 3):337-340.
Spontaneous chronic epidural hematomas are extremely rare and can be extremely challenging to diagnose and differentiate. The clinical findings, computed tomographic scan and magnetic resonance imaging does not always enough to complete differentiate this condition. Our purpose is to report a case of a spontaneous chronic epidural hematoma presenting as an extradural mass leading to compressive radicular symptoms with images of bony scalloping which are sparsely reported in the literature.
We describe a 61-year-old woman who was evaluated after 18-month history of pain, disestesias and mild weakness in both lower extremities with significant radicular symptoms on the right side associated to neurogenic claudication.
CT scans revealed a nodular image of soft tissue density located in the right anterolateral epidural space at the L4–L5 level demonstrating resorption of the bony margins. MRI studies revealed a round mass in the vertebral canal displacing the dural sac and scalloping the posterior wall of the L4 vertebral body. Diagnosis was established between a degenerative cyst versus an atypical neurinoma. Surgical findings demonstrated an isolated well-formed chronic hematoma.
Spontaneous chronic epidural hematomas are rare, even more when they produce scalloping of bony structures becoming a diagnostic challenge. Therefore they should be always considered as a differential diagnosis in patients with extradural chronic compressions taking into account that also chronic epidural hematomas can cause bone involvement.
PMCID: PMC3641257  PMID: 22718047
Tumour; Spine, epidural; Hematoma
19.  Role of phosphatase activity of soluble epoxide hydrolase in regulating simvastatin-activated endothelial nitric oxide synthase 
Scientific Reports  2015;5:13524.
Soluble epoxide hydrolase (sEH) has C-terminal epoxide hydrolase and N-terminal lipid phosphatase activity. Its hydrolase activity is associated with endothelial nitric oxide synthase (eNOS) dysfunction. However, little is known about the role of sEH phosphatase in regulating eNOS activity. Simvastatin, a clinical lipid-lowering drug, also has a pleiotropic effect on eNOS activation. However, whether sEH phosphatase is involved in simvastatin-activated eNOS activity remains elusive. We investigated the role of sEH phosphatase activity in simvastatin-mediated activation of eNOS in endothelial cells (ECs). Simvastain increased the phosphatase activity of sEH, which was diminished by pharmacological inhibitors of sEH phosphatase. In addition, pharmacological inhibition of sEH phosphatase or overexpressing the inactive phosphatase domain of sEH enhanced simvastatin-induced NO bioavailability, tube formation and phosphorylation of eNOS, Akt, and AMP-activated protein kinase (AMPK). In contrast, overexpressing the phosphatase domain of sEH limited the simvastatin-increased NO biosynthesis and eNOS phosphorylation at Ser1179. Simvastatin evoked epidermal growth factor receptor–c-Src–increased Tyr phosphorylation of sEH and formation of an sEH–Akt–AMPK–eNOS complex, which was abolished by the c-Src kinase inhibitor PP1 or c-Src dominant-negative mutant K298M. These findings suggest that sEH phosphatase activity negatively regulates simvastatin-activated eNOS by impeding the Akt–AMPK–eNOS signaling cascade.
PMCID: PMC4548251  PMID: 26304753
20.  Delayed Onset Neurological Deterioration due to a Spinal Epidural Hematoma after a Spine Fracture 
Asian Spine Journal  2007;1(2):98-101.
There are no reports of a 7-day delay in the onset of neurological deterioration because of a spinal epidural hematoma (SEH) after a spinal fracture. A hematoma was detected from the T12 to L2 area in a 36-year-old male patient with a T12 burst fracture. On the same day, the patient underwent in situ posterior pedicle instrumentation on T10-L3 with no additional laminectomy. On the seventh postoperative day, the patient suddenly developed weakness and sensory changes in both extremities, together with a sharp pain. A MRI showed that the hematoma had definitely increased in size. A partial laminectomy was performed 12 hours after the onset of symptoms. Two days after surgery, recovery of neurological function was noted. This case shows that spinal surgeons need to be aware of the possible occurrence of a delayed aggravated SEH and neurological deterioration after a spinal fracture.
PMCID: PMC2857477  PMID: 20411132
Spinal epidural hematoma; Spine fracture; Neurology
21.  Hemophilia A in a Senior Patient: A Case Report of Spinal Epidural Hematoma as First Presentation 
Asian Spine Journal  2015;9(3):452-455.
Hemophilia A is a hereditary coagulation disorder. Most cases are diagnosed at birth or at least during childhood. A spontaneous spinal epidural hematoma was developed in a 74-year-old male patient who hadn't had a family or past medical history of bleeding disorders. On magnetic resonance imaging, epidural hematoma at L1-2 was accompanied by spinal stenosis at L4-5 and spondylolytic spondylolisthesis at L5. Hematoma evacuation and surgery for distal lumbar lesions were performed at once. After transient improvement, complete paraplegia was developed due to redevelopment of large epidural hematomas at L1-2 and L4-S1 which blocked epidural canal completely. Emergency evacuation was performed and we got to know that he had a hemophilia A. Factor VIII was 28% of normal value. Mild type hemophilia A could have not been diagnosed until adulthood. Factor VIII should have been replaced before the surgical decompression.
PMCID: PMC4472596  PMID: 26097663
Hemophilia A; Hematoma; Epidural; Spinal; Spontaneous; Senior
22.  Surgical management of spontaneous spinal epidural hematoma 
European Spine Journal  2006;15(6):998-1004.
Spontaneous spinal epidural hematoma (SSEH) is a rare disease entity; its causative factors and the factors determining the outcome are still controversial. We reviewed our clinical experiences and analyzed the various factors related to the outcome for SSEH. We investigated 14 patients (11 men and 3 women) who underwent hematoma removal for SSEH from April 1998 to August 2004. We reviewed age, gender, hypertension, anticoagulant use and the preoperative neurological status using the Japanese Orthopaedics Association score by examining medical records, operative records, pathology reports, and radiographies, retrospectively. We were checking for factors such as the degree of cord compression owing to hematoma and the extent and location of the hematoma. Most patients included in the study were in their twenties or fifties. Four hematoma were located in the cervical region (29%), three were cervicothoracic (21%), four were thoracic (29%) and three were in the lumbar (21%) region and also 12 were located at the dorsal aspect of the spinal cord. In all cases, the neurological outcome improved after the surgical operation. There was a statistically significant difference between the incomplete and complete neurological injury for the preoperative status (P<0.05). The neurological outcome was good in those cases that had their hematoma removed within 24 h (P<0.05). The patients with incomplete neurological injury who had a surgical operation performed within 12 h had an excellent surgical outcome (P<0.01). Spontaneous spinal epidural hematoma was favorably treated by the means of a surgical operation. The favorable factors for SSEH operations were incomplete neurological injury at the time of the preoperative status and the short operative time interval.
PMCID: PMC3489451  PMID: 16758110
Epidural hematoma; Cord injury; Operative time interval; Spine surgery
23.  A posterior epidural mass causing paraparesis in a 20-year-old healthy individual 
We present a case of a posterior epidural abscess at the thoracic vertebral level causing paraparesia in a young, healthy individual with no otherwise predisposing factors, with normal laboratory findings, as diagnosed using fat-suppressed MR imaging. Spinal epidural abscess is a rare condition, encountered mostly in the midthoracic or lower lumbar vertebral levels of elderly patients, that has a high mortality and morbidity (18-31%) when diagnosis and treatment is delayed. It is rarely spontaneous and is usually accompanied by spinal osteomyelitis. Diagnosis is rather easy in cases of vertebral osteomyelitis or when classical clinical, laboratory and imaging findings are present. However, cases of spontaneous development, with no predisposing factors, and lack of abscess suggesting clinical and laboratory findings may be a diagnostic challenge. In such cases, other posterior epidural masses such as schwannoma, neurofibroma, meningioma and hematoma should be considered in the differential diagnosis. Both the clinician and the radiology physician should have a high suspicion of epidural abscesses, because their early diagnosis and treatment is important. In addition to routine MR images, fat-suppressed MR images prove helpful in the diagnosis of spontaneous epidural abscesses by showing the inflammatory changes in the paraspinal area.
PMCID: PMC2760701  PMID: 20157473
Posterior epidural mass; MRI; Spontaneous epidural abscesses
24.  Hemiparesis Caused by Cervical Spontaneous Spinal Epidural Hematoma: A Report of 3 Cases 
Advances in Orthopedics  2011;2011:516382.
We report three cases of spontaneous spinal epidural hematoma (SSEH) with hemiparesis. The first patient was a 73-year-old woman who presented with left hemiparesis, neck pain, and left shoulder pain. A cervical MRI scan revealed a left posterolateral epidural hematoma at the C3–C6 level. The condition of the patient improved after laminectomy and evacuation of the epidural hematoma. The second patient was a 62-year-old man who presented with right hemiparesis and neck pain. A cervical MRI scan revealed a right posterolateral dominant epidural hematoma at the C6-T1 level. The condition of the patient improved after laminectomy and evacuation of the epidural hematoma. The third patient was a 60-year-old woman who presented with left hemiparesis and neck pain. A cervical MRI scan revealed a left posterolateral epidural hematoma at the C2–C4 level. The condition of the patient improved with conservative treatment. The classical clinical presentation of SSEH is acute onset of severe irradiating back pain followed by progression to paralysis, whereas SSEH with hemiparesis is less common. Our cases suggest that acute cervical spinal epidural hematoma should be considered as a differential diagnosis in patients presenting with clinical symptoms of sudden neck pain and radicular pain with progression to hemiparesis.
PMCID: PMC3170783  PMID: 21991415
25.  Postoperative Spinal Epidural Hematoma: Risk Factor and Clinical Outcome 
Yonsei Medical Journal  2006;47(3):326-332.
We report a series of epidural hematomas which cause neurologic deterioration after spinal surgery, and have taken risk factors and prognostic factors into consideration. We retrospectively reviewed the database of 3720 cases of spine operation in a single institute over 7 years (1998 April-2005 July). Nine patients who demonstrated neurologic deterioration after surgery and required surgical decompression were identified. Factors postulated to increase the postoperative epidural hematoma and to improve neurologic outcome were investigated. The incidence of postoperative epidural hematoma was 0.24%. Operation sites were cervical 3 cases, thoracic 2 cases, and lumbar 4 cases. Their original diagnoses were tumor 3 cases, cervical stenosis 2 cases, lumbar stenosis 3 cases and herniated lumbar disc 1case. The symptoms of epidural hematomas were neurologic deterioration and pain. After decompression, clinical outcome revealed complete recovery in 3 cases (33.3%), incomplete recovery in 5 cases (55.6%) and no change in 1 case (11.1%). Factors increasing the risk of postoperative epidural hematoma were coagulopathy from medical illness or anticoagulation therapy (4 cases, 44.4%) and highly vascularized tumor (3 cases, 33.3%). The time interval to evacuation of complete recovery group (29.3 hours) was shorter than incomplete recovery group (66.3 hours). Patients with coagulopathy and highly vascularized tumor were more vulnerable to spinal epidural hematoma. The postoperative outcome was related to the preoperative neurological deficit and the time interval to the decompression.
PMCID: PMC2688151  PMID: 16807981
Clinical outcome; risk factor; postoperative; spinal epidural hematoma; spine surgery

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