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': 'What is the treatment of choice in desmoid tumors \nSelect and explain. \nA. Irradiation, B. Wide excision, C. Local excision, D. Local excision following radiation', 'role': 'user'}, {'content': "Answer: B \nExplanation: Desmo means Band/Tendon in Greek. It is a tumour arising from the musculoaponeurotic layer of abdomen, below the level of the umbilicus. It is unencapsulated, hard, fibroma, presently classified under aggressive fibromatosis.80% of cases occur in women, commonly after deliveries, over the abdominal scars, OCP use.It is often associated with Gardner's syndrome. Wide excision of the tumour with a margin of 2.5 cm along with placement of a mesh to the abdominal defect is the treatment of choice. It is moderately radiosensitive. Drugs like sulindac and tamoxifen are also used. Chemotherapeutic agents like doxorubicin, actinomycin D, dacarbazine, carboplatin are used but with significant toxicity. Recurrence rate is high--20-40%. Reference : page 742-43 SRB's manual of surgery 5th edition.", 'role': 'assistant'}]