This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Pathology
The most common site for lymphagiosarcoma is 
Select and explain. 
A. Liver, B. Spleen, C. Post mastectomy arm, D. Retroperitoneum
C: Post mastectomy arm
Answer: C: Post mastectomy arm 
Explanation: Ans. (c) Post mastectomy arm(Ref: Cancer 1948; 1:64-81)*Lymphangiosarcoma is a misnomer because this malignancy seems to arise from blood vessels instead of lymphatic vessels.*Most commonly, this tumor is a result of lymphedema induced by radical mastectomy*Stewart-Treves syndrome is a rare, cutaneous angiosarcoma that develops in long-standing chronic lymphedema.