<prompt> The renal tumour which has multicentric origin -Squamous cell carcinomaRenal cellBothNone  <response>: Ans. is a i.e., Wilms tumor Wilms tumor o Wilms tumor is the most common primary renal tumor of childhood. o Usual age for diagnosis is 2-5 years. o Approximately 5 to 10 of Wilms tumors involve both kidney, either simultaneously or one after the other. o Nephrogenic rests are the precursor lesions of Wilms Tumor. o Most children with wilms tumors present with a large abdominal mass. o Less common presentations are hematuria, abdominal pain, intestinal obustruction, and hypeension. o 10 of Wilms tumors are either bilateral or multicentric at the time of diagnosis. - Robbins 