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Dermoscopic findings in radiation-induced alopecia after angioembolization
Suhyun Cho1, Min Ju Choi, Jung Soo Lee
1Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea.
Background:
Cases of non-scarring alopecia after endovascular brain surgery have been reported, but dermoscopic findings of these lesions have rarely been published.
Objective:
To report the dermoscopic findings for alopecic skin lesions that developed after radiation exposure during angioembolization.
Methods:
Dermoscopic examination was used to evaluate alopecic skin lesions in 10 patients who presented with post-angioembolization alopecia.
Results:
The male to female ratio was 1:4, mean age 55.0 ± 12.3 years and mean duration to lesion development 3.4 ± 2.5 weeks. The rectangular-shaped lesions mostly occurred at the occiput and temple areas. Both yellow and black dots were the predominant dermoscopic findings in 60% (6/10) of patients, followed by short vellus hair (50%), peripilar sign (20%), broken hair (10%), coiled hair (10%) and white dots (10%).
Conclusions:
Alopecic skin lesions induced by radiation exposure during angioembolization share characteristic dermoscopy findings with alopecia areata. They may be misdiagnosed if a precise history is not obtained.
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