This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': 'Testicular tumour most sensitive to radiation is \nSelect and explain. \nA. Teratoma, B. Lymphoma, C. Mixed germ cell tumour, D. Seminoma', 'role': 'user'}, {'content': "Answer: D \nExplanation: Seminomas are most radiosensitive. So after orchidectomy radiotherapy is given to increase the cure rate and also to reduce relapse(excellent results in stage 1 and 2 seminomas). Radiotherapy is not beneficial in teratomas as they are less radiosensitive. Other radiosensitive tumours are squamoua cell carcinoma, basal cell carcinoma, hodgkin's lymphoma.Reference : page 1087 and1143 SRB's manual of surgery 5th edition", 'role': 'assistant'}]