Pyoderma gangrenosum and extensive caval thrombosis associated with the antiphospholipid syndrome--a case report.

Pyoderma gangrenosum is a rare cutaneous disorder frequently associated with systemic diseases. The authors report the case of a 28-year-old man with pyoderma gangrenosum and inferior cava vein syndrome due to thrombosis. The search for pyoderma gangrenosum-associated conditions (gastrointestinal, rheumatic, neoplasic, and infectious diseases) was negative.