This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney and ureter, Subject name: Surgery
Commonest presentation of Wilm's tumour is: 
Select and explain. 
A. Hematuria, B. Abdominal lump, C. Hydronephrosis, D. Pain in abdomen
B: Abdominal lump
Answer: B: Abdominal lump 
Explanation: WILMS TUMOR Wilm's Tumor: MC primary renal tumor of childhood (2-5 Years) Wilm's Tumor: 2nd MC malignant abdominal tumor in children (MC is neuroblastoma). Arise from kidney, composed of three elements- Blastema, Epithelium & Stroma. (BESt) MC presenting feature is asymptomatic abdominal mass or swelling.