Unlabelled: Anorectal mucosal melanoma (AMM) is a rare, aggressive malignancy. The symptoms of AMM mimic common benign conditions in the anus, such as haemorrhoids; hence diagnosis is often made late, a third of patients having metastasis at first presentation. Surgical resection remains the standard of treatment, and adjuvant therapy is varied, including immunotherapy, brachytherapy, and chemotherapy. The prognosis is poor, with a 5-year survival of 20%. A 65year old woman presented with a five-year history of symptoms suggestive of haemorrhoids and was diagnosed with a malignant anorectal mucosal melanoma after symptoms worsened and further investigation performed. She underwent surgical resection and is currently receiving adjuvant therapy. The prognosis of AMM, the lack of consensus on the treatment regimen to dat and the need for a high index of suspicion for early diagnosis .
Funding: None declared.
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http://dx.doi.org/10.4314/gmj.v56i4.12 | 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).
ACG Case Rep J
January 2025
Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, FL.
Anorectal mucosal melanoma (ARMM) is exceptionally rare, highly malignant, and characterized by a poor prognosis. We present the case of a 76-year-old woman with ARMM and recurrent gastrointestinal (GI) bleeding/anemia caused by small-bowel metastases, which was successfully managed with laparoscopic resection. ARMM is an aggressive type of cancer that has the potential to metastasize to the GI tract approximately 4.
View Article and Find Full Text PDFVet Sci
December 2024
Ospedale Veterinario I Portoni Rossi, Anicura Italy Holding, via Roma 51, 40069 Zola Predosa, Italy.
An 11-year-old spayed female Beagle presented with tenesmus and was identified with a rectal wall mass. Diagnostic imaging (abdominal ultrasound and computed tomography) localised the mass in the right rectal wall and documented no evidence of metastatic disease. Subsequently, the dog underwent surgery for tumour excision.
View Article and Find Full Text PDFJ Pers Med
November 2024
Otorhinolaryngology Department, Hospital Clinic of Barcelona, Universitat de Barcelona (UB), 08036 Barcelona, Spain.
: Sinonasal mucosal melanomas (SNMMs) are rare and aggressive malignancies with poor survival outcomes. Our systematic review and meta-analysis aim to evaluate overall survival (OS) rates in patients with SNMM; : We conducted a systematic search, following PRISMA guidelines across PubMed, Web of Science (WOS), and citation searching for studies reporting survival and prognosis outcomes for SNMMs. Inclusion criteria included studies with 5-year OS rates.
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.
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