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Related Experiment Video

Updated: Jan 8, 2026

Generation and Expansion of Primary, Malignant Pleural Mesothelioma Tumor Lines
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Peritoneal cystic mesothelioma.

C Vara-Thorbeck1, R Toscano-Mendez

  • 1Department of General Surgery, Hospital Universitario, Colonia Santa Inés S/N, Málaga, Spain.

Surgical Endoscopy
|April 19, 2002
PubMed
Summary

This case study highlights a rare instance of benign peritoneal cystic mesothelioma in a man, initially suspected as gallbladder cancer metastasis. Surgical removal of the gallbladder likely addressed the inflammatory trigger for this unusual condition.

Area of Science:

  • Gastroenterology and Hepatology
  • Surgical Oncology
  • Pathology

Background:

  • Symptomatic cholelithiasis (gallstones) can lead to gallbladder complications.
  • Peritoneal cystic mesothelioma is an extremely rare neoplasm, particularly in males.
  • Distinguishing benign peritoneal lesions from malignancy during laparoscopy can be challenging.

Observation:

  • A 43-year-old male presented with hepatic colic due to symptomatic cholelithiasis and a sclerosed gallbladder.
  • Laparoscopic surgery revealed multiple peritoneal tumors, initially suspected as gallbladder cancer metastases.
  • Histological examination confirmed benign chronic cholecystitis with multiple peritoneal cystic mesotheliomas.

Findings:

  • The peritoneal cystic mesotheliomas were found to be a reaction to the chronic gallbladder inflammation.

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  • The etiology of cystic mesothelioma remains unclear, but a persistent inciting factor is hypothesized.
  • Laparoscopic resection of the gallbladder and visible lesions was performed, potentially removing the inciting factor.

    • Implications:

    • This case underscores the importance of thorough histological examination to differentiate benign peritoneal lesions from metastases.
    • The findings suggest a potential link between chronic gallbladder inflammation and the development of peritoneal cystic mesothelioma.
    • The diagnostic dilemma during laparoscopy highlights the need for careful surgical judgment when encountering ambiguous peritoneal findings.