[Thoraco-brachial outlet venous syndromes].

The name "phlebitis of effort" is often misleading ; effort is often only the precipitating or revealing factor of a venous thrombosis related, in fact, to another cause. In particular, the author draws attention to the local factor of subclavian stenosis : one case is reported in demonstration. In order to detect these subclavian stenoses, a clinical examination is sometimes of little value and phlebography is essential for diagnosis. Identification of this kind of lesion is followed by consideration of the indications for surgery, either to prevent the risk of secondary thrombosis or to decrease the consequences of an existing thrombosis ; in the case reported, the freeing of the vein was combined with thrombectomy.