[Systemic lupus erythematosus manifested by thrombophlebitis of the lower limbs].

The diagnosis of systemic lupus erythematosus was made in a 9 year old boy who had presented two months earlier with an extensive thrombosis of the inferior vena cava and femoral veins. Haemostatic abnormalities were detected as follows: a moderate thrombocytopenia, increased platelet aggregation and stickiness, and a circulating anticoagulant (antithromboplastin).