This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
Symptoms from a retroperitoneal sarcoma are usually produced by 
Select and explain. 
A. Bleeding into the tumor mass, B. Compression of adjacent tissues, C. Invasion of retroperitoneal organs, D. Metastases to retroperitoneal lymph nodes
B: Compression of adjacent tissues
Answer: B: Compression of adjacent tissues 
Explanation: Retroperitoneal sarcomas grow along fascial planes and envelop rather than invade retroperitoneal organs.vLymph node metastases are unusual. The tumor does not usually grow rapidly enough to outgrow its blood supply, and major hemorrhage into the tumor mass is uncommon.