Psammoma bodies are seen in following except-
Serous cystadenoma of ovary
Mucinous cystadenoma of ovary
Meningioma
Papillary carcinoma of thyroid
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)
Endocrinology