Dark skin focalities: Difference between revisions
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====Pattern recognition==== | ====Pattern recognition==== | ||
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File:Histopathology of melanocytic nevus.jpg|Melanocytic nevus | File:Histopathology of melanocytic nevus.jpg|link=Melanocytic nevus|[[Melanocytic nevus]] | ||
File:Histopathology of melanoma, HE.jpg|Melanoma | File:Histopathology of melanoma, HE.jpg|link=Melanoma|[[Melanoma]] | ||
File:Blue nevus (4 of 4) (2797064219).jpg|Blue nevus | File:Blue nevus (4 of 4) (2797064219).jpg|link=Blue nevus|[[Blue nevus]] | ||
File:Histopathology of seborrheic keratosis.jpg|Seborrheic keratosis | File:Histopathology of seborrheic keratosis.jpg|link=Seborrheic keratosis|[[Seborrheic keratosis]] | ||
</gallery> | </gallery> | ||
Revision as of 04:45, 20 September 2019
Author:
Mikael Häggström [note 1]
Fixation
- Generally: Buffered 4% formaldehyde.[1]
Dark skin focalities
Skin with one or more areas that are darker than the surroundings.
Microscopic evaluation
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
_(2797064219).jpg){kind=link}
Systematic
By their relative incidences, one practical approach is:
- Is it a dysplastic (melanocytic) nevus? If not:
- Is it a Melanoma? If not:
- Compare to patterns of various other possibilities.
Notes
- ↑ 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
- ↑ 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.
Image sources