Keloids and hypertrophic scars: Characteristic vascular structures visualized by using dermoscopy

Min Gun Yoo, Il Hwan Kim

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


Background: Keloids and hypertrophic scars represent excessive scarring. They require different therapeutic approaches, which can be hampered because of an apparent lack of morphologic difference between the two diseases. Objective: This study investigated the clinical and dermoscopic features of keloids and hypertrophic scars in order to help dermatologists distinguish these lesions better. Methods: A total of 41 keloids and hypertrophic scars in 41 patients were examined clinically and by performing dermoscopy with a digital imaging system. Lesions were evaluated for vascular structures. Results: Dermoscopy revealed vascular structures in most keloid lesions (90%) but in only 27% of hypertrophic scar lesions. The most common dermoscopic vascular structures in keloids were arborizing (52%), followed by linear irregular (33%) and comma-shaped (15%); these features were present but less evident in hypertrophic scars (9% for all types). The distribution frequency of the vascular structures differed significantly between diseases (p < 0.001). Conclusion: A strong association of vascular structures with keloids was observed on dermoscopic examination. The results suggest dermoscopic examination of vascular structures is a clinically useful diagnostic tool for differentiating between keloids and hypertrophic scars.

Original languageEnglish
Pages (from-to)603-609
Number of pages7
JournalAnnals of Dermatology
Issue number5
Publication statusPublished - 2014 Oct 1
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2014, Korean Dermatological Association. All rights reserved.


  • Blood vessels
  • Dermoscopy
  • Hypertrophic scar (hypertrophic cicatrix)
  • Keloid

ASJC Scopus subject areas

  • Dermatology


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