Catastrophic antiphospholipid antibody syndrome in systemic lupus erythematosus: an autopsy case report of a young woman.

Catastrophic antiphospholipid syndrome (CAPS) is a severe variant of antiphospholipid syndrome (APS) characterized by disseminated microangiopathy that results in multiorgan failure. CAPS mainly occurs in association with systemic lupus erythematosus (SLE). Clinically, CAPS mimics disseminated SLE vasculitis, intravascular coagulation (DIC), and particularly thrombotic thrombocytopenic purpura (TTP). We describe an autopsy case of young woman with CAPS in SLE, which is difficult to differentiate from TTP secondary to SLE.