Diagnosis and surgical treatment of carotid body tumors: 25 years' experience in China.

Carotid body tumors (CBT) are rare neoplasms arising from the small chemoreceptor organ in the adventitia of the common carotid bifurcation. A retrospective survey was conducted in 33 patients, treated by curative resection of the neoplasm, from 1980 to 2005, to investigate clinical features, preoperative treatment and surgical approach, and determine the optimum management for CBT. The demographic characteristics, clinical features, surgical approach and complications were documented and analyzed. Accurate diagnosis and effective preoperative training were associated with a good surgical outcome. Carotid arteriography accurately diagnoses and evaluates the brain's collateral circulation in the circle of Willis. Ultrasonography is useful. Carotid blood flow obstruction (Matas' training) is effective. Complete excision of the carotid system without a vascular replacement is possible only after reliable Matas' training and objective observation of the establishment of circulation in the circle of Willis. Correct treatment of the internal and common carotid artery is important to reduce postoperative complications. The continuity of the common and internal carotid artery should be retained if possible, and carotid artery repair is recommended. Minor complications occurred in five (15%) patients and one patient died from a cause not related to the CBT at follow-up.