Difference between revisions of "Electron microscopy"
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*[[Neuroendocrine carcinoma]]. | *[[Neuroendocrine carcinoma]]. | ||
**[[Merkel cell carcinoma]]. | **[[Merkel cell carcinoma]].<ref name=pmid9062165>{{Cite journal | last1 = Gil-Moreno | first1 = A. | last2 = Garcia-Jiménez | first2 = A. | last3 = González-Bosquet | first3 = J. | last4 = Esteller | first4 = M. | last5 = Castellví-Vives | first5 = J. | last6 = Martínez Palones | first6 = JM. | last7 = Xercavins | first7 = J. | title = Merkel cell carcinoma of the vulva. | journal = Gynecol Oncol | volume = 64 | issue = 3 | pages = 526-32 | month = Mar | year = 1997 | doi = | PMID = 9062165 }}</ref> | ||
===Ultrastructure=== | ===Ultrastructure=== | ||
Revision as of 02:04, 5 May 2012
This article collection stuffs about electron microscopy. It is commonly abbreviated EM.
Glycogen
Appearance:
- Cytoplasmic, electron dense, not bound by a membrane.
Seen in:
Tubuloreticular inclusions
Abbreviated TRIs.
Appearance:
- Undulating tubules in the smooth ER, usu. perinuclear.[1]
Seen in:
Melanosomes
Appearance:
- Membrane bound, sausage-like shape.
Image(s):
Seen in:
Neurosecretory granules
- AKA dense-core granules.
General
Seen in:
Ultrastructure
Appearance:[3]
- Round membrane bound, granular core.
- Size: 100-400 nm.
Image(s):
Birbeck granules
- Seen in Langerhans cell histiocytosis.
Appearance:
- Electron dense, cytoplasmic tennis racket-like body.
Image(s):
- Birbeck granules (photobucket.com).
- Usually... only the handle of the tennis racket is well seen.
Malignant mesothelioma
Main article: Malignant mesothelioma
Several EM features can be useful to distinguish mesothelioma from adenocarcinoma as per Warhol et al:[4]
- Microvillous length -- longer in mesothelioma.
- Quantity of intermediate filaments -- mesothelioma have more.
See also
References
- ↑ Stoltenburg-Didinger G, Genth E (June 2009). "[Dermatomyositis]" (in German). Z Rheumatol 68 (4): 287–94. doi:10.1007/s00393-008-0398-y. PMID 19330338.
- ↑ Gil-Moreno, A.; Garcia-Jiménez, A.; González-Bosquet, J.; Esteller, M.; Castellví-Vives, J.; Martínez Palones, JM.; Xercavins, J. (Mar 1997). "Merkel cell carcinoma of the vulva.". Gynecol Oncol 64 (3): 526-32. PMID 9062165.
- ↑ URL: http://www.pathologyimagesinc.com/emhandbook/diagn-organelles-section/organelle-pages/neuroendo-granules.html. Accessed on: 11 February 2011.
- ↑ Warhol, MJ.; Hickey, WF.; Corson, JM. (Jun 1982). "Malignant mesothelioma: ultrastructural distinction from adenocarcinoma.". Am J Surg Pathol 6 (4): 307-14. PMID 6287872.