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: Surgery
Which among the following is the common presentation of Wilms tumour? 
Select and explain. 
A. Haematuria, B. Mass in abdomen, C. Pain, D. Fever
B: Mass in abdomen
Answer: B: Mass in abdomen 
Explanation: Most children with Wilms tumor present with increasing size of the abdomen or an asymptomatic abdominal mass (83%) incidentally discovered by a parent and/or health care provider. Other clinical features, Fever (23%) Hematuria (21%) Hypeension (25%) Genitourinary malformations (6%) Aniridia Hemihyperophy 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.