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Related Experiment Videos

Synchronous anorectal melanoma.

Drinko Balicevic1, Karla Tomic, Miroslav Bekavac-Beslin

  • 1Ljudevit Jurak Department of Pathology, University Hospital Sestre Milosrdnice, Zagreb, Croatia.

World Journal of Gastroenterology
|May 31, 2006
PubMed
Summary
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ENDONASAL LEISHMANIASIS IN A FROZEN SECTION BIOPSY SPECIMEN.

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This case report details multiple synchronous primary anorectal melanomas in a 75-year-old male. The findings highlight the rare occurrence and diagnostic challenges of these aggressive tumors.

Area of Science:

  • Gastroenterology
  • Oncology
  • Surgical Pathology

Background:

  • Anorectal melanoma is an exceptionally rare malignancy with a generally poor prognosis.
  • Rectal bleeding is the most common presenting symptom, necessitating prompt investigation.
  • Surgical interventions for anorectal melanoma vary from local excision to abdominoperineal resection.

Observation:

  • A 75-year-old male presented with recurrent rectal bleeding.
  • Two distinct tumors were identified in the anorectal region, measuring 1 cm and 2.8 cm.
  • Macroscopic and microscopic examination, supported by immunohistochemistry, confirmed melanoma in both lesions.

Findings:

  • The case represents multiple synchronous primary melanomas of the anorectal region.
  • One lesion was pedunculated, while the other was sessile and nodular.

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  • A differential diagnosis includes a primary melanoma with a satellite lesion.

    • Implications:

    • This case underscores the importance of thorough histopathological evaluation for anorectal lesions presenting with bleeding.
    • Recognizing multiple synchronous primary anorectal melanomas is crucial for appropriate staging and treatment planning.
    • Further research into the pathogenesis and optimal management of multiple anorectal melanomas is warranted.