Psammoma body
A psammoma body is a round collection of calcium, seen microscopically. The term is derived.
Cause
Psammoma bodies are associated with the papillary histomorphology and are thought to arise from,- Infarction and calcification of papillae tips.
- Calcification of intralymphatic tumor thrombi.
Association with lesions
Psammoma bodies are commonly seen in certain tumors such as:- Papillary thyroid carcinoma
- Papillary renal cell carcinoma
- Ovarian papillary serous cystadenoma and cystadenocarcinoma
- Endometrial adenocarcinomas
- Meningiomas, in the central nervous system
- Peritoneal and pleural mesothelioma
- Somatostatinoma
- Prolactinoma of the pituitary
- Glucagonoma
- Micropapillary subtype of lung adenocarcinoma