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QUIZ SECTION
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Advances in dermatology and venereology Acta Dermato-Venereologica
Two Annular Alopecic Lesions on the Scalp in a Young Asian Man : A Quiz
Su-Kyung PARK 1 , Hyun-Bin KWAK 1 , Seok-Kweon YUN 1 , 2 , Han-Uk KIM 1 , 2 and Jin PARK 1 , 2 *
1
Department of Dermatology , Chonbuk National University Medical School , 20 , Geonji-ro ( Geumam-dong ), Deokjin-gu , Jeonju , 54907 , and
2
Research Institute of Clinical Medicine of Chonbuk National University – Biomedical Research Institute of Chonbuk National University Hospital , Jeonju , South Korea . * E-mail : airmd @ jbnu . ac . kr
Fig . 1 . Clinical characteristics . ( a , b ) Annular alopecic patches on scalp . ( c ) Dermoscopy showing empty follicles and numerous short vellus hairs .
An 18-year-old Korean man presented with 2 asymptomatic , annular hair-loss patches on the scalp for 1 year . Physical examination revealed 2 long , arc-shaped , non-scarring , alopecic patches on the right fronto-parietal ( Fig . 1a ) and left temporo-parietal scalp ( Fig . 1b ) without overlying skin changes such as erythema or scales . Dermoscopy revealed empty follicles , yellow dots , and many short vellus hairs , but broken hairs were not found ( Fig . 1c ). The patient was generally healthy and there was no relevant family history or past history of systemic disease or medication . Laboratory findings were non-contributory other than a positive antinuclear antibody test ( titre 1:20 , speckled pattern ). A skin biopsy from the scalp lesion was performed ( Fig . 2 ; full details in Fig . S1 1 ).
What is your diagnosis ? See next page for answer .
1 https :// www . medicaljournals . se / acta / content / abstract / 10.2340 / 00015555-2556
Fig . 2 . Histopathology . Scanning view of dense lymphocytic infiltrates mainly in the peribulbar and interfollicular area of the lower dermis and the subcutaneous fat layer ( red box ). doi : 10.2340 / 00015555-2556 Acta Derm Venereol 2017 ; 97 : 418 – 419
This is an open access article under the CC BY-NC license . www . medicaljournals . se / acta Journal Compilation © 2017 Acta Dermato-Venereologica .