Abstract
Four cases of carotid body tumor are reported. The value of carotid angiography is stressed, the collection of dye in the tumor being diagnostic. Occlusion of the carotid circulation with clamps during final dissection of the bulb area is recommended for added safety. If occlusion takes more than 10 min, use of an internal shunt is preferable. Preoperative planning of the steps to be taken to avoid any possible complications eliminates the hazards otherwise associated with removal of these tumors.