Lupus aortitis: a case report and review of the literature.

Systemic lupus erythematosus is a complex immunological and rheumatological disease that has numerous complications. Central to the pathogenesis of systemic lupus erythematosus is immune complex formation and deposition in blood vessels and end organs. This is a case report of an autopsy of a patient with systemic lupus erythematosus, end stage renal disease, peripheral vascular occlusive disease, pancreatitis, and aortitis. The aortitis was found to be immune complex mediated with deposition of IgG, C3, as well as fibrinogen in the wall of the aorta as shown by immunofluorescence. The hypercoagulable state of the patient is discussed with particular emphasis on the role of anticardiolipin antibodies, antiphospholipid antibodies, and anti-beta-2-glycoprotein I in the pathogenesis. This case is unique in that the immune complex mediated aortitis has not been described in the literature over the past 25 years. We recommend that the diagnosis of immune complex mediated aortitis be considered in the differential diagnosis of aortitis, particularly in the background of a patient with systemic lupus erythematosus.