psammoma bodies

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psam·mo·ma bod·ies

1. mineralized bodies occurring in the meninges, choroid plexus, and in certain meningiomas; composed usually of a central capillary surrounded by concentric whorls of meningocytes in various stages of hyaline change and mineralization; can also occur in benign and malignant epithelial tumors (such as papillary ovarian or thyroid carcinoma); Synonym(s): sand bodies
2. Synonym(s): corpora arenacea
3. Synonym(s): calcospherite

psam·mo·ma bod·ies

(sa-mō'mă bod'ēz)
1. Mineralized bodies occurring in the meninges, choroid plexus, and in some meningiomas; usually composed of a central capillary surrounded by concentric whorls of meningocytes in various stages of hyaline change and mineralization; can also occur in benign and malignant epithelial tumors (often papillary) or with chronic inflammation;
2. Synonym(s): corpora arenacea.
3. Synonym(s): calcospherite.