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Extraperitoneal parastomal metastasis of malignant peritoneal mesothelioma
  1. Jai Hoff1,
  2. George Castrisos1,
  3. Yiu Ming Ho1 and
  4. Monika Ruhnke2
  1. 1Department of General Surgery, Rockhampton Hospital, Rockhampton, Queensland, Australia
  2. 2Pathology Queensland Rockhampton, Rockhampton Hospital, Rockhampton, Queensland, Australia
  1. Correspondence to Dr Jai Hoff; jaihoff90{at}


A 75-year-old man was referred to surgical outpatient department with what was thought to be a parastomal hernia. Through further investigations with CT and biopsy, it was identified that the parastomal mass was metastatic peritoneal mesothelioma in the abdominal wall and subcutaneous tissue. The patient had a significant surgical history including a previous abdominoperineal resection with end colostomy 9 years prior and a right hemicolectomy for small bowel obstruction the previous year which diagnosed peritoneal mesothelioma. Peritoneal mesothelioma often spreads throughout the abdominal cavity and rarely spreads outside the peritoneum, with this being the first case describing parastomal metastasis. Given the patient’s surgical background, this is possible to have contributed to seeding the spread of peritoneal mesothelioma.

  • general surgery
  • surgical oncology
  • oncology

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  • Contributors JH was responsible for the original concept, writing the original draft and editing. GC was responsible for writing and editing the draft. YMH was responsible for supervision of the project. MR was responsible for histological slides and description.

  • 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.

  • Competing interests None declared.

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

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