Lupus vulgaris in darker skin: Dermoscopic and histopatholog
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Lupus Vulgaris (LV) is the chronic, progressive, tissue destructive form of cutaneous tuberculosis. LV should be diagnosed and treated to prevent scaring and deformities. Here, dermoscopic and histopathogical correlation in LV was attempted.

It was a cross sectional, observational study done from February 2019 to October 2019. Nineteen patients of LV were included. Dermlite 4 with attached smart phone (iphone) was employed. LV lesions were subjected to skin biopsy to confirm the diagnosis.

Study enrolled 19 patients, with 8 males, 5 female and 6 children. Dermoscopy showed yellowish-white globules, white structureless areas and white scales were noted in (100%) patients. Telangiectasias were seen in (84.21%) patients as long linear, branching and short linear vessels. Pinkish-red background was noted in all patients. Newer observations included white shiny streaks, white rosettes and bluish hue. Age, sex, duration of lesions had no influence in the dermoscopic patterns. Discrepancy in dermoscopic-histopathologic correlation was noted. Facial lesions showed increased frequency of follicular plugs, patulous follicles and white rosettes.

Dermoscopy is widely gaining importance in the realm of dermatology. In this study, dermoscopy demonstrated characteristic patterns in LV. Authors perceived a negligible variation of pattern in darker skin types as compared to fairer skin type. Inconsistency in dermoscopic-histopathology correlation demands dermoscopy guided biopsy for the appropriate yield of histopathological changes. Thus, dermoscopy, although not a replacement for histopathology, is a non-invasive procedure that can be used as diagnostic tool or at least as an assertion to clinical diagnosis in many infective dermatoses as well.

Source: https://www.idoj.in/article.asp?issn=2229-5178;year=2020;volume=11;issue=6;spage=948;epage=952;aulast=Ankad
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