Résumé : The authors report their experience of laser thermal angioplasty in a series of 20 patients. An argon laser with a 1.5 or 2.0 millimeter diameter metalcapped optical fiber (Hot Tip Trimedyne Inc.) was used; the laser probe was pushed to the occlusion point; after a channel was produced through the obliteration, a conventional percutaneous balloon angioplasty was performed. The indications were: 4 primitive iliac occlusions, 15 femoral/popliteal occlusions and 1 subclavian obliteration. The immediate results were as follows (table I): 75% overall recanalization (50% at the iliac level, 87% at the femoral/popliteal level and failure at the subclavian level); 5 notable complications were observed (2 limb ischaemia, 2 voluminous inguinal haematoma and 1 aortic cross perforation) without clinical sequelae. The short term follow-up (1 to 8 months) of the successfully treated patients (table II) shows 100% permeability at the iliac level and 77% at the femoral/popliteal level. We conclude that laser thermal angioplasty is a very attractive method in the treatment of primitive iliac and femoral/popliteal occlusions. The well-defined indications must form the subject of a closely discussion between the angiologist, the vascular surgeon and the interventional radiologist.