<prompt> Psammoma bodies are seen in following except-Serous cystadenoma of ovaryMucinous cystadenoma of ovaryMeningiomaPapillary carcinoma of thyroid  <response>: Psammoma bodies are concentrically arranged calcified structures,seen in papillary carcinoma of thyroid ,serous cystadenoma of ovary and meningioma. It is not a feature of mucinous cystadenoma of ovary. Ref:ROBBINS Textbook of pathology 