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1.  Conjunctival Hypertrophic Scar Following Cryotherapy for Retinopathy of Prematurity 
A 6-year-old boy was referred to our hospital with symblepharon and lateral canthal deformity in both eyes, which developed 6 years ago. The patient was born at 27 weeks gestation. He had received cryotherapy for retinopathy of prematurity. One month after cryotherapy, he developed a conjunctival scar with symblepharon in both eyes and underwent symblepharon lysis at another hospital 5 years prior. Ocular examination revealed an extensive conjunctival hypertrophic scar with symblepharon and limitation of extraocular movements. An excisional biopsy, lateral canthoplasty, and symblepharon lysis with conjunctival autograft from the contralateral eye were performed in the left eye. Histopathologic examination revealed diffuse proliferation and infiltration of collagenous tissue.
PMCID: PMC3550314  PMID: 23372382
Cicatrix; Cryotherapy; Hypertrophic; Retinopathy of prematurity; Symblepharon
2.  Clinical Profile and Visual Outcomes after Treatment in Patients with Dysthyroid Optic Neuropathy 
To report the clinical data and visual outcomes after treatment of patients with dysthyroid optic neuropathy (DON).
We retrospectively reviewed the medical records and orbital images of 40 patients (65 eyes) with DON and analyzed the visual outcomes after treatment with intravenous steroids pulse therapy, radiotherapy and orbital decompression.
The study included 21 men and 19 women, with 10 (25%) being diabetic patients. Visual field test results revealed defects in 88.7% of DON eyes; afferent pupillary defects in 63.2%; reduced color vision in 78.5%; and abnormal visual evoked potentials in 84%. Orbital imaging showed moderate to severe apical crowding in 95% of the orbits and intracranial fat prolapse in 24.2%. Median best corrected visual acuity improved from 0.4 to 1.0 after one year of treatment (p < 0.001). We noted more improvement in vision with the use of decompressive surgery than with non-surgical methods (p < 0.05). Recurrences occurred in 7 patients who had not received orbital radiotherapy.
Visual field defects and apical crowding seen on orbital imaging were the most sensitive indicators for the detection of DON. Treatment with intravenous steroids pulse therapy, radiotherapy and orbital decompression effectively improved visual outcomes in cases of DON.
PMCID: PMC3325624  PMID: 22511831
Decompression; Optic neuropathy; Radiation; Steroid; Thyroid eye diseases
3.  A Case of Scar Sarcoidosis of The Eyelid 
We report the case of a patient with scar sarcoidosis that developed along a previous eyelid scar. There was no evidence of ocular or systemic sarcoidosis.
A 29-year-old man presented with a mass on his right eyelid that had been present for two month. On ocular examination an erythematous, firm, and non-tender mass was diffusely palpable along the upper and lower eyelid scar. We performed an incisional biopsy of the lower lid mass.
Histopathologic examination of the mass revealed numerous, noncaseating granulomas with multi-nucleated giant cells. The giant cells contained asteroid bodies and calcium oxalate crystals characteristic of sarcoidosis, although the patient had no other evidence of systemic sarcoidosis. The mass in the upper lid disappeared after intralesional triamcinolone injections.
This case represents a rare occurrence of sarcoidosis that arose in an old eyelid scar. Scar sarcoidosis should be considered in the differential diagnosis of an unusual mass in a scar.
PMCID: PMC2908859  PMID: 17302211
Non-caseating granuloma; Scar sarcoidosis; Triamcinolone injection
4.  Prevalence and Risk Factors for Thyroid Eye Disease among Korean Dysthyroid Patients 
To determine the prevalence of thyroid eye disease among dysthyroid Korean patients and to analyze the relationship between demographic data, lifestyle risk factors, and status of thyroid disease and thyroid eye disease.
All dysthyroid patients who visited endocrinology clinics in 24 general hospitals in Korea during a chosen one-week period were enrolled in this cross-sectional study. Data were collected during an interviewer-administered questionnaire and chart review. Demographic data, lifestyle risk factors, and status of thyroid disease variables were analyzed as risk factors using multivariable regression models to identify independent associations with thyroid eye disease.
A total of 1,632 dysthyroid patients were included (1,301 females [79.7%] and 331 males [20.3%]). Two hundred eighty-three of these patients (17.3%) had thyroid eye disease. Multiple logistic regression analyses revealed that female gender, young age, Graves' disease, dermopathy, anti-thyroid medication treatment, and radioiodine treatment were independent risk factors for thyroid eye disease.
The lower prevalence of thyroid eye disease in dysthyroid Korean patients and the influence of gender on risk factors in this study are novel findings compared to studies performed involving Europeans. Although the risk factors for thyroid eye disease are understood in part, a more in-depth comparative study of gender and ethnic groups is needed to fully understand the biological significance of the demographic factors.
PMCID: PMC3849301  PMID: 24311923
Epidemiology; Graves ophthalmopathy; Korea; Prevalence; Risk factors
5.  Intraocular Lymphoma after Cardiac Transplantation: Magnetic Resonance Imaging Findings 
Korean Journal of Radiology  2012;14(1):122-125.
We report a case of intraocular lymphoma in a 65-year-old man, 15 months after cardiac transplantation. On Magnetic Resonance (MR) images, the iris and the anterior chamber of the right eye were found to be involved with an enhancing soft-tissue lesion. To our knowledge, this is the first case of post-transplantation intraocular lymphoma evaluated with MR imaging.
PMCID: PMC3542295  PMID: 23323042
Orbit, neoplasms; Orbit, MR; Lymphoma; Posttransplantation lymphoproliferative disorder
6.  The Clinical Usefulness of 18F-FDG PET/CT for the Evaluation of Lymph Node Metastasis in Periorbital Malignancies 
Korean Journal of Radiology  2009;10(1):1-7.
The aim of this study was to assess the clinical role of 18F-FDG PET/CT for the evaluation of lymph node metastasis in periorbital malignancies, compared with CT alone.
Materials and Methods
We analyzed eighteen PET/CT and CT scans in 15 patients with biopsy-proven periorbital malignancies. We compared the diagnostic capabilities of PET/CT and CT with regard to nodal metastasis by level-by-level analysis and by N staging prediction. The reference standards were surgical pathology (n = 7) from dissected lymph node specimens and the results from radiological follow-up (n = 11, mean 20.5 months; range 10-52 months). Moreover, any changes in patient care as prompted by PET/CT were recorded and compared with treatment planning for CT alone.
PET/CT had a sensitivity of 100%, while CT had a sensitivity of 57% (p = 0.03) for nodal metastasis by level-by-level analysis. PET/CT had a specificity of 97%, positive predictive value of 93%, negative predictive value of 100%, and diagnostic accuracy of 98%, while the CT values for these same parameters were 97%, 89%, 82%, and 84%, respectively. PET/CT correctly predicted N staging with an accuracy of 100%, while CT was only 83% accurate (p = 0.01). Regarding the impact on patient care, the extent of surgery for regional lymph nodes and the treatment decision were modified by PET/CT in 39% of patients.
PET/CT could provide useful information in the management of regional lymph node metastases in patients with periorbital malignancies.
PMCID: PMC2647179  PMID: 19182496
18F-FDG; PET/CT; Computed tomography (CT) scans; Lymphatic Metastasis; Eyelid Neoplasm

Results 1-6 (6)