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: Pathology
Mesentric tumours are - 
Select and explain. 
A. Usually solid, B. Usually cystic, C. Highly malignant, D. Highly vascular
B: Usually cystic
Answer: B: Usually cystic 
Explanation: Mesentric tumors have been described as cystic in 40-60% of Cases.
Solid primary tumors of mesentry are rare.