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Amelanotic Malignant Melanoma of the Rectum: Report of a Case

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Abstract

We describe herein a case of amelanotic melanoma of the rectum. Macroscopically, the tumor was lacking in pigmentation and microscopically, it was found to be deficient in melanin. Moreover, the tumor cells showed positive staining for HMB-45, the antimelanoma antibody, which led to a diagnosis of amelanotic melanoma. The patient died of metastatic tumors in the liver and bone 17 months after undergoing abdominoperineal resection of the rectum and dissection of the bilateral inguinal lymph nodes.

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Authors and Affiliations

  1. Department of Surgery, Oita National Hospital, 2-11-45 Yokota, Oita 870-0263, Japan, , , , , , JP

    Tadahiro Nozoe & Hideaki Anai

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  1. Tadahiro Nozoe
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  2. Hideaki Anai
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Received: June 12, 2000 / Accepted: January 9, 2001

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Nozoe, T., Anai, H. Amelanotic Malignant Melanoma of the Rectum: Report of a Case. Surg Today 31, 527–529 (2001). https://doi.org/10.1007/s005950170115

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  • DOI: https://doi.org/10.1007/s005950170115

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