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
True about Psammoma bodies are all except ? 
Select and explain. 
A. Seen in meningioma, B. Concentric whorled appearance, C. Contains Calcium deposits, D. Seen in teratoma
D: Seen in teratoma
Answer: D: Seen in teratoma 
Explanation: Ans. is 'd' i.e., Seen in teratoma o Psammoma bodies represent a process of dystrophic calcification. o Single necrotic cells may constitute seed crystals that become encrusted by the mineral deposits. The progressive acquisition of outer layers may create lamellated configurations, called psammoma bodies because of their resemblance to grains of sand. o Psammoma bodies are seen in : papillary cancer of thyroid, meningioma, papillary serous cystadenocarcinoma of ovary.