1976年から1990年までの15年間の新潟大学皮膚科における悪性黒色腫症例の統計的考察

概要

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Forty five cases of cutaneous malignant melanomas in Department of Dermatology, Niigata University School of Medicine were statistically studied. These cases were 16 males and 29 females. The peak for age distribution was seen between 60 and 69 years old. The average age of the cases at first visit was 57.9 years. Acral lentiginous melanoma accounted for 51.1%, nodular melanoma 15.6%, superficical spreading melanoma 17.8%, lentigo maligna melanoma 4.4% of the total cases. Ten cases (22.2%), 6 cases (13.3%), 23 cases (51.1%) and 6 cases (13.3%) were in stage I, II, III and IV, respectively. The histological micrometastasis of lesionallymphnodes was recognized in 6 cases (23.1%) of the 26 cases that had received prophylacted lyrphnode dissection. The tumor thickness and level of all the 6 cases were over 1.5 mm and level III, respectively. Seven cases of the 26 cases that had received a curative surgical treatment died. The tumor thickness and level of all the 7 cases were over 3.0mm and level III, respectively. The five years survival rate of the stage I cases was 89%. Those of stage II, III and IV were 67%, 39% and 0%, respectively. It is cofirmed that the tumor thickness and level of the primary lesions correlates well with their prognosis.
日本皮膚悪性腫瘍学会の論文