This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pediatrics, environment and nutrition, Subject name: Pathology
True about nephrogenic rest- 
Select and explain. 
A. Associated with Wilm's tumor, B. Increased risk of Wilm's tumor in contralateral kidney, C. No association with Wilm's tumor, D. Abnormal embryonal renal tissue
A: Associated with Wilm's tumor
Answer: A: Associated with Wilm's tumor 
Explanation: Robbins basic pathology. 10th edition. page no. 290 Nephrogenic rests are putative precursor lesions of Wilms tumors and are sometimes present in the renal parenchyma adjacent to the tumor. Robbins basic pathology. 10th edition. page no. 291 It is impoant to document the presence of nephrogenic rests in the resected specimen because these patients are at an increased risk for the development of Wilms tumors in the contralateral kidney.