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: Radiology
Spongy mass with sunburst calcification in center seen in CT is seen in: 
Select and explain. 
A. Mucinous cystadenoma CA, B. Serous cystadenoma, C. Somatostationoma, D. Adenocarcinoma pancreas
B: Serous cystadenoma
Answer: B: Serous cystadenoma 
Explanation: Ans. Serous cystadenoma