Nyfors A, Krüger P G
Acta Derm Venereol. 1985;65(4):333-5.
Skin biopsies from 10 patients with seborrheic keratoses were examined by electron microscopy for the presence of Langerhans' cells. Comparing seborrheic keratoses with normal skin of the same patient and with normal skin from controls, neither an increased number of Langerhans' cells nor an increased number of specific granules, Birbeck granules, nor abnormal Langerhans' cells, was found. Melanosomes in a Langerhans' cell were observed in 2 seborrheic keratoses, suggesting phagocytic activity of the Langerhans' cell.
对10例脂溢性角化病患者的皮肤活检标本进行电子显微镜检查，以确定是否存在朗格汉斯细胞。将脂溢性角化病与同一患者的正常皮肤以及对照组的正常皮肤进行比较，未发现朗格汉斯细胞数量增加、特异性颗粒（伯贝克颗粒）数量增加或朗格汉斯细胞异常。在2例脂溢性角化病中观察到朗格汉斯细胞内有黑素小体，提示朗格汉斯细胞具有吞噬活性。
