Pineocytoma
Pineocytoma | |
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Other names | Pinealocytoma |
Micrograph of a pineocytoma. HPS stain. | |
Specialty | Oncology |
Pineocytoma, is a benign, slowly growing tumor of the pineal gland. Unlike the similar condition pineal gland cyst, it is uncommon.
Diagnosis[]
Pineocytomas are diagnosed from tissue, i.e. a brain biopsy.
They consist of:
- cytologically benign cells (with nuclei of uniform size, regular nuclear membranes, and light chromatin)[citation needed] and,
- have the characteristic pineocytomatous/neurocytic rosettes, which is an irregular circular/flower-like arrangement of cells with a large meshwork of fibers (neuropil) at the centre.[1] Pineocytomatous/neurocytic rosettes are superficially similar to Homer Wright rosettes; however, they differ from Homer Wright rosettes as they have (1) more neuropil at centre of the rosette and, (2) the edge of neuropil meshwork irregular/undulating.
Management[]
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See also[]
References[]
External links[]
Classification |
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Categories:
- Endocrine neoplasia
- Brain tumor