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Atypical late presentation of muscular metastasis of melanoma in the contralateral limb
  1. Ankita Mondal,
  2. Lewis Dingle and
  3. Matthew Hough
  1. Department of Plastic Surgery, Ninewells Hospital and Medical School, Dundee, UK
  1. Correspondence to Dr Ankita Mondal; ankita.mondal{at}


A man in his 50s presented to plastic surgery again with a lesion on his left upper arm. He had previously been treated for a malignant melanoma (MM) on his right arm over 5 years earlier. Sentinel lymph node biopsy (SLNB) had been negative, and he had completed the recommended 5 years follow-up period. Imaging was suspicious for an intramuscular soft tissue malignancy within the triceps muscle. After discussion with the regional sarcoma service, a core biopsy was performed. Histopathology suggested a diagnosis of metastatic MM, which was confirmed after surgical excision. This case highlights a rare example of an isolated muscular metastasis of MM, which presented at a distant site, over 5 years from the original treatment. This case highlights the unpredictable nature of MM, reminding clinicians of the need for a low threshold for investigation of soft tissue masses in patients with a history of cutaneous malignancy.

  • Plastic and reconstructive surgery
  • Skin cancer

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  • Contributors AM, LD and MH were responsible for drafting of the text, sourcing and editing of clinical images, investigation results, drawing original diagrams and algorithms, and critical revision for important intellectual content. MH gave final approval of the manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.