Tumors of the neck may present difficult diagnostic problems. This may be especially true if the mass appears to involve the carotid vessels. Information as to the type of tumor and its relation to the carotid vessels may be obtained by use of carotid angiography. These considerations have recently been called to the attention of my colleagues and myself by two patients with grossly similar, pulsating tumors in the superior triangle of the neck.
Cerebral angiography was first introduced by Moniz in the late 1920's and since has been employed extensively for the investigation of intracranial tumors and cerebrovascular disease. The technique of the procedure has been well standardized and at present is a relatively safe procedure. We believe that carotid angiography is of particular value in cases of carotid body and other tumors of the neck not only as far as an accurate preoperative diagnosis is concerned but also