Pineocytoma
Pineocytoma, is a benign, slowly growing tumor of the pineal gland. Unlike the similar condition pineal gland cyst, it is uncommon.
Pineocytoma | |
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Other names | Pinealocytoma |
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Micrograph of a pineocytoma. HPS stain. | |
Specialty | Oncology ![]() |
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) 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
gollark: OR IS IT?
gollark: Okay, I either updated the program running the potatOS blasphemy detector *or* broke it *or* meddled with a random computer somewhere.
gollark: But doesn't websocket connectivity involve a handshake?
gollark: Now to try and use SPUDNET to update the settings remotely.
gollark: NC fission is earlier game.
See also
References
- Wippold FJ, Perry A (March 2006). "Neuropathology for the neuroradiologist: rosettes and pseudorosettes". AJNR Am J Neuroradiol. 27 (3): 488–92. PMID 16551982.
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