Hemorrhagic adrenal cyst: an unusual reason of acute hypovolemia.

Adrenal cysts are often asymptomatic and included in the larger "incidentaloma" group. They may reach significant size without onset of compressive symptoms and are often left undiagnosed until an ultrasound or CT scan are performed for a vague lumbar or flank discomfort. Intracystic hemorrhage is a rare but life-threatening complication since a sudden and significant blood loss may occur without any evident clinical source, hypovolemic shock resulting as the first symptom. The authors report their personal experience in two patients along with a review of the literature on this insidious emergency, its diagnosis and therapeutic approach.