PMC5871375_01
Granulomatous and friable ulcer with infiltrated margins, measuring
approximately 2cm, located in the periungual region of the left
thumb
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f1
Dermoscopy showing an erythematous lesion with typical thin and
branched arboriform vessels and a white halo and ulceration
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f2
Dermoscopy of the lesion revealed an erythematous lesion with typical thin and branched arboriform vessels and a white halo and ulceration (Figure 2).
Peripheral palisade of basaloid cells and adjacent retraction, as
well as swirls of squamous cells (Hematoxylin & eosin, X40)
abd-93-01-0114-g03.jpg
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f3
Histopathological examination of incisional biopsy showed a peripheral palisade of basaloid cells and adjacent retraction, as well as swirls of squamous cells, which confirmed the diagnosis of basosquamous cell carcinoma (Figure 3).