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Pineocytoma
Pronunciation
Definition 1
A slow growing type of brain tumor that occurs in or around the pineal gland, a tiny organ near the center of the brain. (NCI Dictionary)
Definition 2
A WHO grade I slow growing tumor, more frequently affecting young adults. It is composed of small, uniform, mature cells resembling pineocytes with occasional large pineocytomatous rosettes. It may show a wide range of divergent phenotypes, including neuronal, glial, melanocytic, photoreceptor and mesenchymal differentiation. Pineocytoma generally has a relatively favorable prognosis. (NCI Thesaurus/Adapted from WHO)
Definition 3
A benign neoplasm of the brain arising from the pineal gland. (NCI Thesaurus/CDISC)
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