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
True statement about soft tissue sarcoma is/are ? 
Select and explain. 
A. Liposarcoma is rare, B. Incisional biopsy is needed when size > 5cm, C. FNAC is diagnostic, D. TNM staging done
D: TNM staging done
Answer: D: TNM staging done 
Explanation: Ans. is 'd' i.e. TNM staging done Liposarcoma is the IInd MC soft tissue sarcoma and is the MC type in the retroperitoneum. Incisional biopsy is doen when the size of tumor is > 3 cm and the core-needle biopsy fails. FNAC has a limited role in diagnosing soft tissue sarcoma. (Ref: Sabiston 18/e p790) TNM staging is done. According to the Table of radiosensitivity mentioned previously, soft tissue sarcomas are relatively radioresistant tumors.