Ho F C, Ho J C
Histopathology. 1977 Sep;1(5):363-9. doi: 10.1111/j.1365-2559.1977.tb01673.x.
An asymptomatic thymic tumour, classified as a carcinoid tumour on the basis of its light and electron-microscopic appearances, is described. This tumour was atypical in having foci of melanin pigmentation, the pigment being contained in dendritic melanocytes and melanophages. We suggest that the pigmented cells are not neoplastic and represent latent thymic melanoblasts stimulated in some way by the carcinoid tumour. Alternative explanations are discussed.
本文描述了一例无症状胸腺肿瘤，根据其光镜和电镜表现分类为类癌肿瘤。该肿瘤的非典型之处在于有黑色素沉着灶，色素存在于树突状黑素细胞和噬黑素细胞中。我们认为色素细胞并非肿瘤性的，而是代表了因类癌肿瘤以某种方式刺激而激活的潜在胸腺成黑素细胞。文中还讨论了其他解释。
