Glomus tumor pathophysiology: Difference between revisions

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**Aggregates of specialized [[glomus cell]]s
**Aggregates of specialized [[glomus cell]]s
**Thin-walled, branching vascular channels with bland [[endothelial cell]]s
**Thin-walled, branching vascular channels with bland [[endothelial cell]]s
**Tumor cells identified immediately adjacent to the endothelial cells
**[[Tumor]] cells identified immediately adjacent to the [[endothelial cell]]s
**No apparent [[mitotic]] activity
**No apparent [[mitotic]] activity
**Focal nuclear enlargement is present; however, no significant [[nuclear atypia]] is identified.
**Focal nuclear enlargement is present; however, no significant [[nuclear atypia]] is identified.


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Image:Glomus_tumour_-_intermed_mag.jpg|Intermediate magnification micrograph of a glomus tumor. H&E stain.<ref name=op>Glomus tumor. Wikimedia commons. https://commons.wikimedia.org/wiki/File:Glomus_tumour_-_very_high_mag.jpg#/media/File:Glomus_tumour_-_intermed_mag.jpg Accessed on January 7, 2016.</ref>
Image:Glomus_tumour_-_intermed_mag.jpg|Intermediate magnification micrograph of a glomus tumor. H&E stain.Source: wikimedia commons<ref name=op>Glomus tumor. Wikimedia commons. https://commons.wikimedia.org/wiki/File:Glomus_tumour_-_very_high_mag.jpg#/media/File:Glomus_tumour_-_intermed_mag.jpg Accessed on January 7, 2016.</ref>


Image:1200px-Glomus_tumour_-_high_mag.jpg|High magnification micrograph of a glomus tumor. H&E stain.<ref name=op>Glomus tumor. Wikimedia commons. https://commons.wikimedia.org/wiki/File:Glomus_tumour_-_very_high_mag.jpg#/media/File:Glomus_tumour_-_high_mag.jpg Accessed on January 7, 2016.</ref>
Image:1200px-Glomus_tumour_-_high_mag.jpg|High magnification micrograph of a glomus tumor. H&E stain.Source: wikimedia commons<ref name=op>Glomus tumor. Wikimedia commons. https://commons.wikimedia.org/wiki/File:Glomus_tumour_-_very_high_mag.jpg#/media/File:Glomus_tumour_-_high_mag.jpg Accessed on January 7, 2016.</ref>


Image:1200px-Glomus_tumour_-_2_-_very_high_mag.jpg|Very high magnification micrograph of a glomus tumor. H&E stain.<ref name=op>Glomus tumor. Wikimedia commons. https://commons.wikimedia.org/wiki/File:Glomus_tumour_-_very_high_mag.jpg#/media/File:Glomus_tumour_-_2_-_very_high_mag.jpg Accessed on January 7, 2016.</ref>
Image:1200px-Glomus_tumour_-_2_-_very_high_mag.jpg|Very high magnification micrograph of a glomus tumor. H&E stain.Source: wikimedia commons<ref name=op>Glomus tumor. Wikimedia commons. https://commons.wikimedia.org/wiki/File:Glomus_tumour_-_very_high_mag.jpg#/media/File:Glomus_tumour_-_2_-_very_high_mag.jpg Accessed on January 7, 2016.</ref>


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Latest revision as of 15:11, 24 June 2019

Glomus tumor Microchapters

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Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Glomus tumor from other Diseases

Epidemiology and Demographics

Risk Factors

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Natural History, Complications and Prognosis

Diagnosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Soujanya Thummathati, MBBS [2]

Overview

Glomus tumor arises from modified smooth muscle cells (or pericytes) of the glomus body (previously called as glomus cells). The glomus body is a neuromyoarterial plexus in the dermis of skin that is normally involved in thermoregulation. The gene involved in the pathogenesis of familial glomangioma is the glomulin (GLMN) gene. On gross pathology, small (usually less than 1 cm), bluish or whitish, well circumscribed, solitary nodules are characteristic findings of glomus tumor. On microscopic histopathological analysis, branching vascular channels and aggregates of specialized glomus cells are characteristic findings of glomus tumor.

Pathophysiology

Genetics

Associated Conditions

Gross Pathology

Microscopic Findings

References

  1. Kim DH (1999). "Glomus tumor of the finger tip and MRI appearance". Iowa Orthop J. 19: 136–8. PMC 1888624. PMID 10847529.
  2. 2.0 2.1 2.2 2.3 2.4 Gombos Z, Zhang PJ (2008). "Glomus tumor". Arch Pathol Lab Med. 132 (9): 1448–52. doi:10.1043/1543-2165(2008)132[1448:GT]2.0.CO;2. PMID 18788860.
  3. Kumar, Monique G.; Emnett, Ryan J.; Bayliss, Susan J.; Gutmann, David H. (2014). "Glomus tumors in individuals with neurofibromatosis type 1". Journal of the American Academy of Dermatology. 71 (1): 44–48. doi:10.1016/j.jaad.2014.01.913. ISSN 0190-9622.
  4. Stewart, D. R.; Sloan, J. L.; Yao, L.; Mannes, A. J.; Moshyedi, A.; Richard Lee, C.-C.; Sciot, R.; De Smet, L.; Mautner, V.-F.; Legius, E. (2010). "Diagnosis, management, and complications of glomus tumours of the digits in neurofibromatosis type 1". Journal of Medical Genetics. 47 (8): 525–532. doi:10.1136/jmg.2009.073965. ISSN 0022-2593.
  5. Pater TJ, Marks RM (2004). "Glomus tumor of the hallux: case presentation and review of the literature". Foot Ankle Int. 25 (6): 434–7. doi:10.1177/107110070402500614. PMID 15215032.
  6. Fazwi R, Chandran PA, Ahmad TS (2011). "Glomus tumour: a retrospective review of 15 years experience in a single institution". Malays Orthop J. 5 (3): 8–12. doi:10.5704/MOJ.1111.007. PMC 4093623. PMID 25279028.
  7. Glomus tumor. Libre pathology. http://librepathology.org/wiki/index.php/Glomus_tumour Accessed on February 1, 2016.
  8. 8.0 8.1 8.2 Glomus tumor. Wikimedia commons. https://commons.wikimedia.org/wiki/File:Glomus_tumour_-_very_high_mag.jpg#/media/File:Glomus_tumour_-_intermed_mag.jpg Accessed on January 7, 2016.


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