Difference between revisions of "Skin"

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==Dark skin focalities==
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==Presentations==
[[File:Dark skin focalities.jpg|thumb|center|Dark skin focalities (in this case, from top left and clockwise: Spitz nevus, seborrheic keratosis, elevated melanocytic nevus and melanoma)]]
 
Skin with one or more areas that are darker than the surroundings.
 
 
 
===Microscopic evaluation===
 
[[File:Pie chart of incidence and malignancy of pigmented skin lesions.png|thumb|370px|Various diagnoses of pigmented skin lesions, by relative incidence upon biopsy, and malignancy potential.]]
 
Evaluation is largely based on the relative incidence and malignancy of various differential diagnoses (see pie chart). Main approaches are:
 
*Direct pattern recognition
 
*Systematic
 
 
 
====Pattern recognition====
 
 
<gallery>
 
<gallery>
File:Histopathology of melanocytic nevus.jpg|Melanocytic nevus
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File:Dark skin focalities.jpg|link=Dark skin focalities|[[Dark skin focalities]]
File:Histopathology of melanoma, HE.jpg|Melanoma
 
File:Blue nevus (4 of 4) (2797064219).jpg|Blue nevus
 
File:Histopathology of seborrheic keratosis.jpg|Seborrheic keratosis
 
 
</gallery>
 
</gallery>
 
====Systematic====
 
By their relative incidences, one practical approach is:
 
*Is it a '''[[Dysplastic nevus|dysplastic (melanocytic) nevus]]'''? If not:
 
*Is it a '''[[Melanoma]]'''? If not:
 
*Compare to patterns of various other possibilities.
 
 
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Revision as of 03:44, 20 September 2019

Author: Mikael Häggström [note 1]

Fixation

  1. REDIRECT Template:Fixation - general notes

Presentations

Notes

  1. For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Patholines:Authorship for details.

Main page

References

  1. 1.0 1.1 Katarzyna Lundmark, Krynitz, Ismini Vassilaki, Lena Mölne, Annika Ternesten Bratel. Handläggning av hudprover – provtagningsanvisningar, utskärningsprinciper och snittning (Handling of skin samples - Instructions for sampling, cutting and incision. KVAST (Swedish Society of Pathology). Retrieved on 2019-09-09.
  2. Page 678 in: Chhabra, Seema; Minz, RanjanaWalker; Saikia, Biman (2012). "Immunofluorescence in dermatology ". Indian Journal of Dermatology, Venereology, and Leprology 78 (6): 677. doi:10.4103/0378-6323.102355. ISSN 0378-6323. Archived from the original. . 

Image sources