Neoplastic Process
pineocytoma
[ pih-nee-oh-sy-toh-muh ]
Definitions related to pineocytoma:
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(pineocytoma, benign) A benign neoplasm of the brain arising from the pineal gland.CDISC TerminologyClinical Data Interchange Standards Consortium (CDISC), 2021
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A benign, slow growing, pineal parenchymal tumor that more frequently affects young adults.NICHD Pediatric TerminologyU.S. National Cancer Institute, 2021
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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 of Cancer TermsU.S. National Cancer Institute, 2021
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A type of pineal parenchymal cell neoplasm that is a mature well-differentiated tumour (WHO grade I).Human Phenotype Ontology (HPO)The Human Phenotype Ontology Project, 2021
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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. (Adapted from WHO)NCI ThesaurusU.S. National Cancer Institute, 2021
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A pineocytoma is a tumor of the pineal gland, a small organ in the brain that makes melatonin (a sleep-regulating hormone). Pineocytomas most often occur in adults as a solid mass, although they may appear to have fluid-filled (cystic) spaces on images of the brain. Signs and symptoms of pineocytomas include headaches, nausea,...National Center for Advancing Translational Sciences
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