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
The tumour, which may occur in the residual breast or overlying skin following wide local excision and radiotherapy for mammary carcinoma is 
Select and explain. 
A. Leiomyosarcoma, B. Squamous cell carcinoma, C. Basal cell carcinoma, D. Angiosarcoma
D: Angiosarcoma
Answer: D: Angiosarcoma 
Explanation: Angiosarcoma is a vascular tumor which may arise de novo in the breast or as a complication of the radiation therapy.
Sabiston writes - "This vascular tumor may occur de novo in the breast, but the clinically important presentation is in the Dennis after breast radiation or in the lymphedematous upper extremity, following radical mastectomy."