Cystic adventitial disease of the popliteal artery.

The first case of cystic adventitial disease of the popliteal artery recorded in Canada is reported and discussed in conjunction with a review of the world literature of 45 reported cases. This rare cause of arterial insufficiency occurs usually in young men and should be considered in the differential diagnosis of claudication. Angiographic findings are diagnostic and surgery is usually corrective. The theories of etiology and pathogenesis are discussed and the gross and microscopic pathology is demonstrated.