The survival rate of acral lentiginous melanoma is poorer than that of other cutaneous melanoma types, largely owing to difficulty in diagnosis and more advanced stages at presentation.1 A single-center retrospective study of 53 acral melanomas found that at least 34% (n = 18) were initially misdiagnosed; of the misdiagnosed cases, 50% (n = 9) were amelanotic.2 The amelanotic variant of acral volar melanoma is scarcely reported, and its clinical and dermoscopic characteristics are unknown. Özdemir et al3 described a dermoscopic feature on the periphery of pigmented acral lentiginous melanomas as a “vascularized parallel ridge pattern,” defined as erythema and dotted vessels filling the ridges and sparing the furrows. However, volar angiomas have similarly been observed to harbor a vascularized parallel ridge pattern on dermoscopy.4,5 Herein, we describe the dermoscopic features of a subungual melanoma with an amelanotic volar component and compare these findings with the dermoscopic features of volar hemangiomas.
Liopyris K, Navarrete-Dechent C, Mancebo SE, et al. Dermoscopic Appearance of Amelanotic Volar Melanoma Compared With Volar Angioma. JAMA Dermatol. 2019;155(4):500–501. doi:10.1001/jamadermatol.2018.5487
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