[A case of bilateral renal angiomyolipoma diagnosed by fine needle biopsies].

We describe a 37-year-old female with bilateral renal angiomyolipoma. She visited the Emergency Department at our hospital because of right severe flank pain. Computed tomography (CT) disclosed a bilateral renal tumors with fat components and high density lesions compatible with a hematoma. Conservative treatment was started, resulting in the improvement in laboratory findings and symptoms. Needle biopsies were performed under the guidance of ultrasonography. The histology was renal angiomyolipoma. She has been receiving a follow-up study at our out-patient clinic with an uneventful course.