Computed tomography of renal lymphomatoid granulomatosis

Lymphomatoid granulomatosis is an uncommon disease that primarily involves the lungs. Although renal involvement has been demonstrated to be common in autopsy series, the CT appearance has not been previously described. In this report a patient with verified pulmonary lymphomatoid granulomatosis was demonstrated to have bilateral, nodular renal masses by CT which regressed completely with treatment. Although not pathologically proven, this is presumed to represent renal involvement by lymphomatoid granulomatosis.