PMC7007024_01
A: Hyperpig mented, slightly depressed lesion in the infrascapular region. B: Hyper pigmentation of the basal layer of the epidermis, perivas cular inflammatory infiltrate, and slightly hyalinized collagen bundles in the reticular dermis (Hematoxylin & eosin, x100)
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There were no signs of inflammation in the affected area (Figure 1A).
A and B: HFUS, cross-sectional view. A: left scapu lar region, affected area. B: right scapular region, control. The comparative study shows decreased dermal thickness in the affected area and presence of hy poechoic regions in the dermis, sugges ting the preserved skin appendages ( ). Unchanged epidermis and sub cutaneous tissue. C and D: Color Do ppler ultrasound. C: Increased blood flow in the dermis of the affected area D: compared with the contralateral healthy area
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The comparative study between the left (affected) and right (healthy) scapular regions showed decreased dermal thickness in the lesion compared with normal skin (Figures 2A and B). The color Doppler imaging showed increased vascularity of the affected area (Figures 2C and D).