PMC5198088_01
A sharply demarcated rectangular, nonscarring alopecia presented on the occipital scalp.
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Dermatologic examination revealed a sharply demarcated rectangular nonscarring alopecic patch, measuring 10 x 12 centimeters in size, on the occipital scalp, without erythema or scaling (Figures 1 and 2).
The rectangular shape of the radiation field in fluoroscopy-guided endovascular embolization is consistent with alopecic area in our patient.
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fig2
Dermatologic examination revealed a sharply demarcated rectangular nonscarring alopecic patch, measuring 10 x 12 centimeters in size, on the occipital scalp, without erythema or scaling (Figures 1 and 2).
Dermoscopic examination showed mostly yellow dots (yellow circle), black dots (black circles), short vellus hairs, and blue-grey dots in a target pattern around yellow dots and follicles (polarized mode; 60x).
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Dermoscopic examination of the alopecic area showed mostly yellow dots, black dots, short vellus hairs, and blue-grey dots in a target pattern around yellow dots and follicles (Figure 3).
Histopathology showed increased numbers of catagen and telogen hairs, without perifollicular infiltration (hematoxylin and eosin staining; 20x).
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A 4 mm punch biopsy was performed and showed increased numbers of catagen and telogen hairs without perifollicular infiltration (Figure 4).
The patient had complete hair regrowth within 4 months.
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The patient achieved complete hair regrowth within 4 months (Figure 5).