This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Which one of the following is the treatment of choice for a desmoids tumor? 
Select and explain. 
A. Surgery, B. Radiotherapy, C. Chemotherapy, D. Radiotherapy + Chemotherapy
A: Surgery
Answer: A: Surgery 
Explanation: Desmoid tumors are cytologically bland fibrous neoplasms originating from the musculoaponeurotic structures throughout the body. Desmoid tumors are twice more common in females than in males. Primary surgery with negative surgical margins is the most successful primary treatment modality for desmoid tumors. Positive margins after surgery reflect a high risk for recurrence. Wide excision with a 2.5 cm margin is usually done.