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53 year old female with biopsy proven renal sarcoid. Subtracted postcontrast T1 image demonstrates an ill defined exophitic left renal mass (white arrow), with mild enhancement to a lesser degree than the surrounding normal renal parenchyma. (GE Signa HDx 1.5T T1 weighted LAVA fat saturated axial sequence, TR 4, TE 2, Venous-arterial postcontrast subtraction 12cc Omniscan injection)
