This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal Tumors, Subject name: Surgery
[{'content': "All of the following is true about Wilm's tumour except - \nSelect and explain. \nA. May present with an abdominal lump, B. It is most common renal neoplasm in children, C. It is always unilateral, D. Responds well to chemotherapy", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., It is always unilateral Wilm's tumouro Wilm's tumor is the most common renal neoplasm & 2nd most common malignant abdominal tumor, in children(Most common abdominal malignant tumor is neuroblastoma)o 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 (metachronous)Clinical 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.", 'role': 'assistant'}]