2023
DOI: 10.5114/pjp.2023.133846
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Primary amelanotic melanoma of anorectum – a rare case report with diagnostic challenge

Gyanendra Singh,
Anurag Singh

Abstract: Anorectal melanoma is an exceptionally rare and aggressive form of cancer. One per cent of anorectal malignant tumours are anorectal malignant melanomas, which are exceedingly uncommon. We report a case of a 47-year-old woman who experienced painless rectal bleeding. On examination, an irregular lump was seen in the posterior rectal wall, measuring 4 × 3.7 cm. Biopsies were obtained under endoscopic guidance for histomorphology and immunohistochemistry. The biopsy examination showed nests of tumour mass in the… Show more

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