From 2004 to 2008, nine patients were diagnosed as CBT at the Department of Vascular Surgery, Xuanwu Hospital, Capital Medical University. Among them, five were male, the mean age was 43 years (range from 26 to 84 years). All patients had a movable mass in the anterior cervical triangle regions. Other common symptoms included tenderness, dizziness, hoarseness and dysphasia. One patient was previously misdiagnosed as cervical liparomphalus and had unsuccessful resection operation.
Six patients underwent color Doppler ultrasonography. Low echo-level chunks were detected in external carotid arteries and internal carotid arteries. Diameters range from 1.4 cm to 6.0 cm (). Seven patients underwent transcranial doppler (TCD) sonography before the surgery (). In all of these patients, the carotid artery compression test showed that blood flow in cerebral arteries decreased by 60% or more. Three patients had CT examination with angiography plus three-dimensional reconstruction, which showed that soft tissues encased the posterior lateral side of the left common carotid artery bulb. All patients had digital subtraction angiography (DSA), which showed abnormal accumulation of contrast medium at the crotch of common carotid artery.
Doppler ultrasonography showed carotid body tumor (2.91 cm × 2.29 cm × 1.84 cm).
Digital subtraction angiography reveals a tumor mass at the bifurcation of the left carotid artery (5.1 cm × 4.7 cm × 3.5 cm).
Preoperative Shambin grouping was performed according to imaging examinations. Four patients were classified as type I, two as type II and three as type III. Eight patients underwent surgical treatments under general anesthesia. Four of them underwent simple carotid body tumor resection, two underwent carotid body tumor resection and ligation of external carotid artery and two had common carotid artery-internal carotid artery artificial vascular reconstruction.
No perioperative mortality and stroke occurred. During a mean follow-up of 2.2 years (3 months to 6 years), the patient who refused surgery died three years after the diagnosis due to complications from bone fracture. The patient with malignant tumor died two years after the surgery due to multiple metastases.