PMC6380125_01
(a) linear yellow raised bands present in layered fashion above and below bilateral knees; (b) polarised dermoscopy showing ill-defined structureless yellow areas without any vasculature (Dinolite AM413ZT; x200; polarizing)
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F1
A 16-year-old healthy girl presented with asymptomatic yellow bands around the bilateral knee since 3 years [Figure 1a]. Dermoscopy showed linear and ill-defined yellow structureless areas without any vascular component [Figure 1b].
(a) normal epidermis with increased number of elastin fibers throughout the dermis (H and E; x100); (b) normal and fragmented wavy elastin fibers (Verhoeff Van-Gieson; x400)
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F2
Hematoxylin and eosin stain showed normal epidermis with increased elastin fibers throughout the dermis [Figure 2a]. Verhoeff Van-Gieson stain showed the presence of increased thin, wavy elongated as well as fragmented elastin fibers [Figure 2b].