ABSTRACT

Hemoperitoneum secondary to corpus hemorrhagicum is an unusual mani-festation in patients with von Willebrand’s disease. We report a 14-year-old girl with von Willebrand’s disease who was admitted to hospital with acute abdominal pain. Sonography demonstrated a large amount of free fluid in the lower abdominal quadrants and a complex cystic lesion in the right ad-nexa, containing internal septations and fluid-fluid level. Serial sonographic examinations showed rapid resolution of the lesion with factor VIII replace-ment therapy. This case presents sonographic findings of corpus hemorrha-gicum and hemoperitoneum that have been rarely documented in previously published cases and should be considered in the differential diagnosis of acute abdomen in teenage girls with von Willebrand’s disease.