Simis D R, Peris Barbo M L, Baz A C, Paschoal F M, Simis A
Service de Dermatologie, Faculté de Médecine de Sorocaba, São Paulo, Brésil.
Ann Dermatol Venereol. 1996;123(9):572-3.
Rare clinical presentations of common diseases are sometimes worth of publication. Their knowledge may help to avoid diagnostic mistakes.
In a 6 year-old boy a cluster of pigmented blue papules spread slowly on the inner aspect of his left foot. The extension over years and the linear arrangement of the plantar papules suggested the possibility of a malignant melanoma. However the histological examination of 2 biopsies showed the structure of a common blue nevus.
About a dozen cases of such papular plaque-type blue nevi have been described. Histologically they disclose the same cellular types than common blue nevi. In all the reported cases the course was benign; in our case the decision of abstention was sustained by this information.
常见疾病的罕见临床表现有时值得发表。了解这些情况可能有助于避免诊断错误。
一名6岁男孩左脚内侧有一簇色素沉着的蓝色丘疹缓慢扩散。多年来的扩散情况以及足底丘疹的线性排列提示了恶性黑色素瘤的可能性。然而，两次活检的组织学检查显示为普通蓝痣的结构。
已经描述了大约十几例这种丘疹斑块型蓝痣病例。从组织学上看，它们与普通蓝痣具有相同的细胞类型。在所有报告的病例中，病程都是良性的；在我们的病例中，基于这一信息做出了暂不处理的决定。
