恶性雀斑样痣(Lentigo Maligna),以下简称LM,也叫赫金森氏黑变性雀斑和局限性前胚细胞瘤性黑变病,代表恶性黑色素瘤的水平生长阶段,即原位恶黑。其临床表现于1891年为外科医师赫金森第一次描述,直到70年代才作为一种独立的皮肤病损而为人们广泛接受。LM好发于头面部曝光区皮肤,口腔粘膜不多见,国内尚无文献报道。本文将我科诊断的两例口腔粘膜LM报告如下,并复习文献加以讨论。 Maligna (Lentigo Maligna), hereinafter referred to as LM, also called Hutchinson’s black degeneration freckle and localized prematural neoplasmosis, represents the horizontal growth stage of malignant melanoma, ie, in situ nausea. Its clinical presentation was first described by the surgeon Hutchinson in 1891 and was not widely accepted until the 1970s as an independent skin lesion. LM occurs in the skin of the exposed area of ​​the head and face, and the oral mucosa is rare. There is no report in the country. This article will report the two cases of oral mucosal LM diagnosed by our department as follows and review the literature for discussion.