There is a group of vascular diseases about which little is known, which frequently must be passed without recognition and which may often be submerged beneath and masked by other more obvious lesions. This is the class of generalized, nonspecific, chronic arteritis and phlebitis of which Buerger's disease undoubtedly is a type. Reports of thrombo-angiitis obliterans affecting vascular territories other than the extremities are accumulating. Barron and Lilienthal1 attempted to direct attention to the more general distribution of the disease in contradistinction to what was previously believed concerning it—that it was a disease involving the blood vessels of the extremities exclusively. In substantiation of this hypothesis, they reported cases of their own and those from the literature. Taube2 recently reported two cases of mesenteric involvement and collected the reports of twenty-six others which appeared in the literature and which deal with the process as it occurs in the