[Unexpected XXXX found during the operation in renal calculus: report of two cases].

@entity1 @entity1290 @entity1358 @entity3 @entity158
Case 1: A 58-year-old @entity1 was seen with dull @entity158 over the left flank. The X-ray examination revealed a @entity1290 in the left kidney. On operation, a globular hard mass was found in the lower portion of the posterior aspect of the kidney from which a biopsy specimen was obtained. A frozen section study showed @entity1358 , and nephrectomy was performed. The @entity1 is well four years after the operation without recurrence or @entity3 . Case 2: A 50-year-old @entity1 consulted with microhematuria pointed out in a physical examination. At the operation for @entity1290 , we found the mass in the lower portion of the kidney. A frozen section study of the mass revealed @entity1358 . We performed nephrectomy and lymphadenectomy on the renal pedicle. The @entity1 is well three years after the operation. We reviewed the cases of @entity1358 associated with @entity1290 reported in Japan and discussed how the nephrectomy should be performed according to the frozen section study.
