psammomatous meningioma


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psam·mo·ma·tous me·nin·gi·o·ma

a firm cellular neoplasm derived from fibrous tissue of the meninges, choroid plexus, and certain other structures associated with the brain, characterized by the formation of multiple, discrete, concentrically laminated, calcareous bodies (psammoma bodies); most such neoplasms are histologically benign but may lead to severe symptoms as a result of compressing the brain.

psam·mo·ma·tous men·in·gi·o·ma

(sa-mō'mă-tŭs mĕ-nin'jē-ō'mă)
A firm cellular neoplasm derived from fibrous tissue of the meninges, choroid plexus, and certain other structures associated with the brain, and characterized by the formation of multiple, discrete, concentrically laminated, calcareous bodies (psammoma bodies); most of these neoplasms are histologically benign, but may lead to severe symptoms as a result of compressing the brain.
Synonym(s): Virchow psammoma.

Virchow,

Rudolf, German pathologist and politician, 1821-1902.
Virchow angle - an angle formed by the meeting of a line drawn from the middle of the nasofrontal suture to the base of the anterior nasal spine, with a line drawn from this last point to the center of the external auditory meatus. Synonym(s): Virchow-Holder angle
Virchow cells - (1) the lacunae in osseous tissue containing the bone cells; also the bone cells themselves; - (2) connective tissue cells between the laminae of fibrous tissue in the cornea. Synonym(s): corneal corpuscles; Virchow corpuscles
Virchow corpuscles - Synonym(s): Virchow cells (2)
Virchow crystals - yellow-brown, amber, or burnt orange crystals of hematoidin, frequently observed in extravasated blood in tissues.
Virchow disease - acute congenital encephalitis, a condition in which the head is abnormally large. Synonym(s): megacephaly
Virchow law - there is no special or distinctive neoplastic cell inasmuch as the component cells of neoplasms originate from preexisting forms.
Virchow node - a firm, palpable supraclavicular lymph node that may be the first recognized presumptive evidence of a malignant neoplasm in one of the viscera. Synonym(s): signal node
Virchow psammoma - a firm, cellular neoplasm derived from fibrous tissue of the meninges, choroid plexus, and certain other brain structures. Synonym(s): psammomatous meningioma
Virchow triad - factors predisposing vascular thrombosis.
Virchow-Hassall bodies - Synonym(s): Hassall bodies
Virchow-Holder angle - Synonym(s): Virchow angle
Virchow-Robin space - a tunnel-like extension of the subarachnoid space surrounding blood vessels that pass into the brain or spinal cord from the subarachnoid space. Synonym(s): His perivascular space

psammomatous

pertaining to a psammoma.

psammomatous meningioma
a meningioma in which psammoma bodies occur.