<prompt> Which histological finding in resected kidney indicated Bilateral Wilms tumor?Blastemal componentNephrogenic restsSkeletal muscle differentiationAbnormal mitotic figures  <response>: Ans. b Nephrogenic restsRef: Robbins 9thpg 479- 481Nephrogenic restsThey are putative precursor lesions of Wilms tumorsPatients with presence of nephrogenic rests in the resected specimen, are at an increased risk of developing Wilms tumors in the contralateral kidney and require frequent and regular surveillance. 