Multidetector CT findings of spontaneous rupture of hepatic adenoma in a patient with hepatic adenomatosis.

Hepatic adenomatosis (HA) is characterized by more than 10 adenomas in the liver, frequently scattered within both lobes. The potential for spontaneous bleeding, rupture, and malignant transformation is known. In HA, tumors show hypervascularization on arterial angiography, computed tomography (CT), and magnetic resonance imaging. We report the case of a 32-year-old woman who presented with a large intraparenchymal and subcapsular hematoma in the liver, and an underlying large adenoma with atypical radiologic characteristics detected with multidetector CT imaging. On follow-up CT examination, a large adenoma was clearly visualized at the site of the previous hematoma.