Figure 3From: Renal cancer associated with recurrent spontaneous pneumothorax in Birt-Hogg-Dubé syndrome: a case report and review of the literature Contrast-enhanced computed tomographic image of the abdomen showing a 1.7 cm non-enhancing lesion in the lower pole of the left kidney (arrow). This was excised by partial nephrectomy and found to be a hybrid oncocytoma, a tumor which is typical of Birt-Hogg-Dubé syndrome.Back to article page