Bleeding in a patient with lupus anticoagulant without associated hemostatic abnormalities.

Bleeding is very rare in patients with lupus anticoagulants in the absence of associated hemostatic abnormalities. Few cases have been reported with attention given to work-up for other coagulation defects. We report a case of spontaneous hematoma in a patient with lupus anticoagulant, immunoglobulin (Ig)M anticardiolipin antibodies, and no other associated abnormalities.