Psammoma body refers to the calcified sphere usually associated with various malignancies. These can easily be learned through a mnemonic: PPSSaMMoma P = papillary carcinoma of thyroid and papillary renal cell carcinoma P = prolactinoma S = serous cystadenocarcinoma of ovariy S = somatostatinoma M = meningioma M = mesothelioma Reference: http://step1mneumonics.blogspot.com/2012/04/mnemonic-psammoma-bodies.html Image via: https://step1.medbullets.com/pathology/106018/psammoma-bodies