Granulomatous renal pseudotumor in Wegener's granulomatosis: imaging findings in one case

Wegener's granulomatosis is a clinicopathological entity characterized by n ecrotizing granulomatous angiitis involving the upper- and/or lower respira tory tract and the kidneys. Renal involvement is usually characterized by a rapidly progressive necrotizing glomerulonephritis. A case is presented of a patient who developed renal failure and presented a solitary pseudotumor al lesion in the upper pole of the left kidney. Imaging characteristics on US, CT and MR imaging are discussed. The diagnosis was confirmed with ultra sound-guided needle biopsy.