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Video:ABCDEFG Rule

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ABCDEFG Rule (Tutorial)
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Description

The ABCDEFG Rule is a mnemonic for assessing the likelihood of a spot being cancerous.[1][2]

A

The letters correspond to asymmetry,[1][2]

B

border irregularity,[1][2]

C

color variability,[1][2]

D1

difference, as the ugly duckling sign, where one spot is unusually peculiar compared to others,[1][2]

d2

or a diameter that is widening,[1][2]

f

elevation or evolution,[1][2]

E

firm to touch,[1][2]

F

or just funny looking,[1][2]

G

and growing.[1][2]

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 Daniel Jensen, J; Elewski, BE (February 2015). "The ABCDEF Rule: Combining the "ABCDE Rule" and the "Ugly Duckling Sign" in an Effort to Improve Patient Self-Screening Examinations". The Journal of clinical and aesthetic dermatology. 8 (2): 15. PMID 25741397. Archived from the original on 2023-04-17. Retrieved 2023-08-09.
  2. ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 "DermNet® - ABCDEFG of melanoma". DermNet®. 26 October 2023. Archived from the original on 30 May 2024. Retrieved 12 July 2024.
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