Pineocytoma: Difference between revisions
Jump to navigation
Jump to search
| Line 10: | Line 10: | ||
:*Cytologically benign cells (uniform size of nuclei, regular nuclear membrane, light chromatin) | :*Cytologically benign cells (uniform size of nuclei, regular nuclear membrane, light chromatin) | ||
:*Pineocytomatous/neurocytic rosette, which is an irregular circular/flower-like arrangement of cells with a large meshwork of fibers ([[neuropil]]) at the centre | :*Pineocytomatous/neurocytic rosette, which is an irregular circular/flower-like arrangement of cells with a large meshwork of fibers ([[neuropil]]) at the centre | ||
*According to the ''WHO classification of tumors of the central nervous system'', pineocytoma is classified into a WHO grade I tumor.<ref name=WHOgrade>General feature of pineocytoma. Libre pathology 2015. http://librepathology.org/wiki/index.php/Pineal_gland#Pineocytoma. Accessed on November 18, 2015</ref> | |||
===Gallery=== | ===Gallery=== | ||
Revision as of 23:03, 18 November 2015
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]
Overview
Pineocytoma, also known as a pinealocytoma, is a benign, slowly growing pineal parenchymal tumor.[1]
Pathophysiology
- On gross pathology, pineocytoma is characterized by solid, sometimes with focal areas of cystic change, well-circumscribed mass with or without hemorrhage.[2]
- On microscopic histopathological analysis, pineocytoma is characterized by:[3]
- Cytologically benign cells (uniform size of nuclei, regular nuclear membrane, light chromatin)
- Pineocytomatous/neurocytic rosette, which is an irregular circular/flower-like arrangement of cells with a large meshwork of fibers (neuropil) at the centre
- According to the WHO classification of tumors of the central nervous system, pineocytoma is classified into a WHO grade I tumor.[4]
Gallery
-
![Intermediate magnification micrograph of a pineocytoma. HPS stain.[5]](/images/0/0b/Pineocytoma_-_intermed_mag.jpg)
Intermediate magnification micrograph of a pineocytoma. HPS stain.[5] -
![High magnification micrograph of a pineocytoma. HPS stain.[5]](/images/3/39/Pineocytoma_-_high_mag.jpg)
High magnification micrograph of a pineocytoma. HPS stain.[5] -
![Very high magnification micrograph of a pineocytoma. HPS stain.[5]](/images/0/02/Pineocytoma_-_very_high_mag.jpg)
Very high magnification micrograph of a pineocytoma. HPS stain.[5]
![Intermediate magnification micrograph of a pineocytoma. HPS stain.[5]](/index.php/File:Pineocytoma_-_intermed_mag.jpg)
![High magnification micrograph of a pineocytoma. HPS stain.[5]](/index.php/File:Pineocytoma_-_high_mag.jpg)
![Very high magnification micrograph of a pineocytoma. HPS stain.[5]](/index.php/File:Pineocytoma_-_very_high_mag.jpg)
References
- ↑ Pineocytoma. Wikipedia 2015. https://en.wikipedia.org/wiki/Pineocytoma. Accessed on November 18, 2015
- ↑ Pathology and radiographic features of pineocytoma. Dr Bruno Di Muzio and Dr Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/pineocytoma. Accessed on November 18, 2015
- ↑ Microscopic features of pineocytoma. Libre Pathology 2015. http://librepathology.org/wiki/index.php/Pineal_gland#Pineocytoma. Accessed on November 18, 2015
- ↑ General feature of pineocytoma. Libre pathology 2015. http://librepathology.org/wiki/index.php/Pineal_gland#Pineocytoma. Accessed on November 18, 2015
- ↑ 5.0 5.1 5.2 Microscopic images of pineocytoma. Libre Pathology 2015. http://librepathology.org/wiki/index.php/Pineal_gland#Pineocytoma. Accessed on November 18, 2015