pituicytoma
Findings
No curated finding names pituicytoma yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
An extremely rare, WHO grade I, circumscribed and slow-growing tumor that arises from the neurohypophysis or infundibulum and described in adults. It is characterized by the presence of elongated, spindle-shaped neoplastic glial cells that form storiform patterns or interlacing fascicular arrangements. Signs and symptoms include visual disturbances, headache, amenorrhea, and decreased libido.
Definition from the Mondo Disease Ontology (MONDO:0006372), read 2026-09-29. CC BY 4.0.
Features
20 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Neoplasm of the posterior pituitaryHPOHP:0011752
- Obligate (100% of cases)
- PituicytomaHPOHP:0011754
- Obligate (100% of cases)
- Abnormal pituitary gland morphologyHPOHP:0012503
- Very frequent (80% to 99% of cases)
- HeadacheHPOHP:0002315
- Frequent (30% to 79% of cases)
- Visual field defectHPOHP:0001123
- Frequent (30% to 79% of cases)
- Abnormal circulating adrenocorticotropin concentrationHPOHP:0011043
- Occasional (5% to 29% of cases)
- AmenorrheaHPO
Show the remaining 8
- Hypogonadotropic hypogonadismHPOHP:0000044
- Occasional (5% to 29% of cases)
- HypopituitarismHPOHP:0040075
- Occasional (5% to 29% of cases)
- ImpotenceHPOHP:0000802
- Occasional (5% to 29% of cases)
- Increased circulating prolactin concentrationHPOHP:0000870
- Occasional (5% to 29% of cases)
- Memory impairmentHPOHP:0002354
- Occasional (5% to 29% of cases)
- Pituitary hypothyroidismHPOHP:0008245
- Occasional (5% to 29% of cases)
Where it sits
Other names
2 names
Resolves to: pituicytoma
- Also called
- pituicytoma (WHO grade I)posterior pituitary astrocytoma