Ependymal Pituicytoma

Preferred Label : Ependymal Pituicytoma;

NCIt synonyms : Sellar Ependymoma;

NCIt definition : A very rare, low-grade neoplasm that arises from the posterior pituitary. It is composed of epithelioid and oncocytic cells forming sheets and fascicles. It shows histopathological features reminiscent of ependymomas, including perivascular pseudorosettes and true rosettes. There is no evidence of necrosis or increased mitotic activity. Despite the presence of ependymal histopathological features, these neoplasms probably are not related to ependymomas. Their prognosis is unknown.;

Neoplastic status : Undetermined;

NCI Metathesaurus CUI : CL556253;

Details

Origin ID

C155774;

UMLS CUI

C4744368;

Automatic exact mappings (from CISMeF team)
- Sellar ependymoma [ICD-11 Extension code]
- Sellar ependymoma (morphologic abnormality) [SNOMED CT concept]
Disease may have findings
- Calcification [NCIt concept]
- Well-Circumscribed Lesion [NCIt concept]
Excludes anatomical site(s)
- Spinal Cord [NCIt concept]
Has associated anatomic sites
- Base of the Skull [NCIt concept]
- Brain [NCIt concept]
- Central Nervous System [NCIt concept]
- Head and Neck [NCIt concept]
- Nervous System [NCIt concept]
- Pituitary Gland [NCIt concept]
- Sellar Region [NCIt concept]
- Skull [NCIt concept]
Semantic type(s)
- Neoplastic Process [UMLS semantic type]
UMLS correspondences (same concept)
- Sellar ependymoma (morphologic abnormality) [SNOMED CT concept]
concept_is_in_subset
- Mapped ICDO3.2 Morphology PT Terminology [NCIt concept]
- Mapped ICDO3.2 Morphology Terminology [NCIt concept]
- Mapped ICDO3.2 Terminology [NCIt concept]
disease_excludes_finding
- Anaplastic Lesion [NCIt concept]
- High Mitotic Activity [NCIt concept]
- Precise Histogenesis Unknown [NCIt concept]
disease_has_abnormal_cell
- Neoplastic Cell [NCIt concept]
- Neoplastic Epithelioid Cell [NCIt concept]
- Neoplastic Oncocyte [NCIt concept]
disease_has_finding
- Monomorphic Cellular Infiltrate [NCIt concept]
- Perivascular Pseudorosette Formation [NCIt concept]
- Rosette Formation [NCIt concept]
- Slow Growing Mass [NCIt concept]
disease_has_grade
- Low Grade [NCIt concept]
disease_has_normal_cell_origin
- Pituicyte [NCIt concept]
disease_has_primary_anatomic_site
- Brain [NCIt concept]
- Central Nervous System [NCIt concept]
- Posterior Lobe of the Pituitary Gland [NCIt concept]

Keyword's position in hierarchy(ies) :

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