This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
A child with an abdominal mass diagnosed of having Wilms tumour. The child may have all of the following features associated with Wilms tumour, EXCEPT: 
Select and explain. 
A. Aniridia, B. Hemihyperophy, C. Hypeension, D. Bilateral polycystic kidney
D: Bilateral polycystic kidney
Answer: D: Bilateral polycystic kidney 
Explanation: Horseshoe kidney is associated with Wilms tumor not bilateral polycystic kidney. In a few children, Wilms tumor occurs in the setting of associated malformations or syndromes, including, Aniridia Hemihyperophy Genitourinary malformations Cryptorchidism Hypospadias Gonadal dysgenesis Pseudohermaphroditism Horseshoe kidney Beck-with-Wiedemann syndrome Denys-Drash syndrome WAGR syndrome (Wilms tumor, aniridia, ambiguous genitalia, mental retardation) Ref: Graham D.K., Quinones R.R., Keating A.K., Maloney K., Foreman N.K., Giller R.H., Greffe B.S. (2012). Chapter 31. Neoplastic Disease. In W.W. Hay, Jr., M.J. Levin, R.R. Deterding, J.J. Ross, J.M. Sondheimer (Eds), CURRENT Diagnosis & Treatment: Pediatrics, 21e.