Thromboangitis Obliterans: A Clinical Study with Special Emphasis on Venous Involvement

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Abstract
Sixty-one cases of thromboangitis obliterans (TAO) were studied during 1969-70. Nearly all were males, smokers, of poor socio-economic status. Average age of presentation was 34.2 years. A majority (64%) presented with claudication pain. About one fifth gave history of migratory thrombophlebitis and venography and histological investigations suggested that sixty per cent had venous involvement. Nearly half the patients had involvement of upper limb vessels. Clinical and arteriographic studies showed femoral-popliteal junction to be the commonest site of block. No evidence of coronary artery disease, cerebral vascular disease, abnormal glucose and lipid metabolism was seen in these patients. Arteriographic findings were unlike atherosclerosis obliterans (ASO). From this study we conclude that thromboangitis obliterans (TAO) is a separate and distinct clinical and pathologic entity and the incidence of venous involvement is very high if venographic investigations are combined with clinical examination.

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