Presentation
Right upper quadrant acute pain and tenderness.
Patient Data



Predominantly echogenic lesion involving the upper pole of the right kidney associated with more complex appearing perinephric collection.



CT scan of the abdomen confirms the presence of a fatty lesion in the upper pole of the right kidney consistent with angiomyolipoma complicated by hemorrhage.
Incidental two tiny hepatic hemangiomas.
Case Discussion
Perirenal hemorrhage without a history of trauma complicating an angiomyolipoma is known as Wunderlich syndrome. If perirenal hemorrhage is encountered on ultrasound, a thorough workup should be performed to exclude a bleeding renal cell carcinoma.