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: Unknown
Psammoma bodies are seen in the following except - 
Select and explain. 
A. Serous cystadenoma of ovary, B. Mucinous cystadenoma of ovary, C. Meningioma, D. Papillary' carcinoma of thyroid
B: Mucinous cystadenoma of ovary
Answer: B: Mucinous cystadenoma of ovary 
Explanation: Ans. is 'b' i.e., Mucinous cystadenoma of the ovary o Psammoma body is a morphological feature of dystrophic calcification, o It is found in:- y Papillary carcinoma thyroid y Meningioma Serous cystadenoma of ovary and Renal cell carcinoma (papillary types)