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