<prompt> Psammoma bodies are seen in all of the following malignancies, EXCEPT:Follicular Ca thyroidPapillary Ca thyroidSerous cystadenoma of ovaryMeningioma  <response>: Psammoma bodies are not seen in follicular carcinoma of thyroid. Psammoma bodies are laminated calcified spheres and are usually diagnostic of papillary carcinoma. Malignant calcified psammoma bodies are found in 80 of serous cystadenoma of ovary. Meningiomas are also frequently associated with Psammoma bodies. Ref: Wyatt C., Kemp W.L., Moos P.J., Burns D.K., Brown T.G. 2008. Chapter 18. Endocrine Pathology. In C. Wyatt, W.L. Kemp, P.J. Moos, D.K. Burns, T.G. Brown Eds, Pathology: The Big Picture. 