[Extensive subcutaneous hemorrhage complicating primary amyloidosis].

Bleeding manifestations are common in patients with primary as well as secondary amyloidosis and have been attributed to different mechanical and metabolic causes. Factor X deficiency has been described in patients with primary amyloidosis, although severe bleeding is not common in these patients. We describe a patient with extensive subcutaneous hematoma, a sign that served as the major indicator assisting us in establishing the diagnosis of primary amyloidosis.