Akasaka T, Imamura Y, Kon S
Department of Dermatology, Iwate Medical University, School of Medicine, Japan.
J Dermatol. 1993 Oct;20(10):638-42. doi: 10.1111/j.1346-8138.1993.tb01353.x.
A case of multiple agminated juvenile melanoma (MAJM) arising on a hyperpigmented macule is reported. The patient, a 1-year-old boy, had 9 small nodules on an irregular, hyperpigmented macule on the right shoulder. Histologically, the nodules contained nests of spindle-shaped cells in their epidermis and at the dermoepidermal junction, and the hyperpigmented macule exhibited increased melanin granules in the basal layer and small nests of epithelioid cells. We concluded that MAJM on a hyperpigmented macule is the subtype of the nevus spilus.
报告了1例发生于色素沉着斑上的多发性聚集性幼年黑素瘤（MAJM）。该患者为1岁男童，右肩部不规则色素沉着斑上有9个小结节。组织学上，结节在表皮及真皮表皮交界处含有梭形细胞巢，色素沉着斑在基底层显示黑素颗粒增多及小上皮样细胞巢。我们得出结论，色素沉着斑上的MAJM是斑痣的一种亚型。
