Elmets C A, Ceilley R I
Cutis. 1980 Feb;25(2):164-6, 168.
A sixty-two year old man was diagnosed as having an amelanotic of the right great toe after the lesion had been treated for several months as a pyogenic granuloma. Establishment of the correct diagnosis was aided by the finding of a radiolucent defect on a roentgenogram of the toe. Since amelanotic melanoma usually presents as a vascular or ulcerated nodule, rather than as a pigmented nevus, the lesion may be mistaken for a benign tumor. This case illustrates the necessity of histologic confirmation of all presumed pyogenic granulomas. Furthermore, it also stresses that clinical, histologic, and prognostic distinctions must be made between amelanotic melanoma and its pigmented counterpart.
一名62岁男性的右大脚趾病变在被当作化脓性肉芽肿治疗数月后，被诊断为无色素性黑素瘤。脚趾X线片上发现的透光性缺损有助于做出正确诊断。由于无色素性黑素瘤通常表现为血管性或溃疡性结节，而非色素痣，该病变可能被误诊为良性肿瘤。此病例说明了对所有疑似化脓性肉芽肿进行组织学确诊的必要性。此外，它还强调了在无色素性黑素瘤与其色素性对应物之间必须进行临床、组织学和预后方面的区分。
