Heparin-Induced Thromboembolism: Angiographic Features

Angiographic evaluation of heparin-induced thromboembolism in 3 patients who suffered disastrous consequences revealed a distinctive radiographic appearance consisting of mural filling defects quite unlike atheromatous plaques. These lesions were broad-based, isolated, gently lobulated excrescences which produced 30–95% narrowing of the arterial lumen. In each case, the lesions were located proximal to sites of arterial occlusion.