Rare growth of a psammomatous meningioma in a mature ovarian teratoma: a case report.

The presence of meningothelial elements along with abundant psammoma bodies indicates the presence of a benign meningioma within a teratoma. Recognition of meningioma arising in the setting of a teratoma is of prognostic significance, depending on the nature of this component and its spread beyond the organ of origin. We report a case of psammomatous meningioma in which meningothelial cells and psammoma bodies were both abundant and diffuse, allowing for the diagnosis of a meningioma.