<prompt> All of the following is true about Wilms tumour except -May present with an abdominal lumpIt is most common renal neoplasm in childrenIt is always unilateralResponds well to chemotherapy  <response>: Ans. is c i.e., It is always unilateral Wilms tumouro Wilms tumor is the most common renal neoplasm 2nd most common malignant abdominal tumor, in childrenMost common abdominal malignant tumor is neuroblastomao Peak incidence is between 2 and 5 yrs of age.o 5-10 are bilateral; either both kidneys are involved simultaneously synchronous or one after the other metachronousClinical features of W.T. Abdominal lump most common presenting feature Abdominal pain Vomiting Hematuria HypertensionTreatment High cure rates of 80-90 can be achieved with multimodality treatment using surgery, chemotherapy radiotherapy Surgical resection is done in all stages followed by chemotherapy stage I II or chemotherapy radiotherapy stage III, IV, V Pre op chemotherapy is given in inoperable bilateral cases Chemotherapeutic agents used are Vincristine, Dactinomycin, Doxorubicin Cyclophosphamide. 