Anal melanoma is rare and aggressive malignancy. Patients commonly present with advanced, even metastatic disease. Unlike cutaneous melanoma, anal melanoma has no known risk factors. Surgical excision remains the cornerstone of therapy. There are no long-term survivors of stage II or III disease; therefore, early diagnosis and treatment remain crucial. There are no trials definitively proving abdominal perineal resection (APR) or wide local excision (WLE) to yield superior long-term survival. APR may offer a higher rate of local control, whereas WLE offers a much less morbid operation. Adjuvant chemotherapy, interferon, and radiation may offer some benefit.
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http://dx.doi.org/10.1055/s-2006-942348 | DOI Listing |
EClinicalMedicine
January 2025
Canadian Cancer Trials Group, Queen's University, Kingston, ON, Canada.
Background: Dual inhibition of cytotoxic T-lymphocyte associated protein 4 (CTLA-4) and programmed death ligand 1 (PD-L1) has been shown to be an effective treatment strategy in many cancers. We sought to determine the objective response rate of combination durvalumab (D) plus tremelimumab (TM) in parallel cohorts of patients with carefully selected rare cancer types in which these agents had not previously been evaluated in phase II trials and for which there was clinical or biological rationale for dual immune checkpoint inhibitor therapy to be active.
Methods: We designed a multi-centre, non-blinded, open-label phase II basket trial with each of the following 8 rare cancers considered a separate phase II trial: salivary carcinoma, carcinoma of unknown primary (CUP) with tumour infiltrating lymphocytes and/or expressing PD-L1, mucosal melanoma, acral melanoma, osteosarcoma, undifferentiated pleomorphic sarcoma, clear cell carcinoma of the ovary (CCCO) or squamous cell carcinoma of the anal canal (SCCA).
Updates Surg
December 2024
Department of Colon and Rectal Surgery, Mayo Clinic, 200 First St. Southwest, Rochester, MN, 55905, USA.
Anal Melanoma (AM) is a rare and aggressive disease lacking standardized treatment protocols. Despite advancements in medical oncology, the 5-year overall survival (OS) remains at 20%. Local surgery (LS) has gained popularity over radical surgery (RS) due to its comparable OS when negative margins are achieved.
View Article and Find Full Text PDFInt J Surg Case Rep
November 2024
Surgical Oncology Department, Regional Oncology Center, Mohammed VI University Hospital, Oujda, Morocco; Mohammed First University Oujda, Faculty of Medicine and Pharmacy Oujda, Oujda, Morocco.
Introduction: Anorectal melanoma (AM) is a rare and aggressive type of cancer. Its symptoms often resemble those of common benign anal conditions, such as hemorrhoids, leading to frequent delays in diagnosis. Consequently, about one-third of patients have metastases at the time of their initial diagnosis.
View Article and Find Full Text PDFCureus
November 2024
Department of Orthopaedics, University General Hospital of Ioannina, Ioannina, GRC.
Anorectal melanoma (ARM) is a rare entity with aggressive biological behavior and poor prognosis. Clinically, ARM presents with atypical symptoms, such as anal pain and bleeding, thus often being misdiagnosed as a benign anorectal pathology and leading to delayed diagnosis. We present a case of a 73-year-old female patient with stage I ARM, treated successfully with a combination of neoadjuvant-adjuvant immunotherapy (nivolumab, an anti-PD-1 monoclonal antibody) and abdominoperineal resection.
View Article and Find Full Text PDFJ Surg Case Rep
November 2024
Department of Colorectal Surgery, Huntington Hospital, Huntington, NY, United States.
Anal melanoma is a rare and highly aggressive malignancy that carries a poor prognosis. Due to its variable and ambiguous presentation, it is often misdiagnosed as a hemorrhoid, polyp, or an ulcer with a concomitant rectal prolapse. Clinicians usually have a low suspicion of anal melanoma due to its rarity and most people present with metastatic disease at the time of diagnosis.
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