METHODS: The case is presented of a 22-year-old female diagnosed with multicystic mesothelioma after an urgent resection of intra-abdominal tumour in the context of acute abdominal pain. In the subsequent follow-up, the patient had a recurrence of the lesion, and at 2 years was treated by further resection.
CONCLUSIONS: Benign multicystic mesothelioma is a benign tumour of unknown origin, and with a non-specific clinical manifestation. The most effective treatment is surgical, although there is a high tendency to local recurrence.