Objective: To report a case of pseudomyxoma peritonei accidentally discovered during preoperative examination and review relevant literature to improve the early diagnosis of the origin of pseudomyxoma peritonei. Methods: To analyze a case accidentally discovered due to abdominal distension in our hospital in October 2023. Combined with domestic and foreign literature, the etiology, clinical manifestations, diagnosis, differential diagnosis and treatment of PMP were discussed. Results: The patient was admitted due to abdominal distension with no other specific discomfort. Mucinous tumors were found during imaging examinations. Conclusion: PMP is a rare disease, and clinical manifestations often include abdominal distension. It is usually first discovered through imaging examinations such as ultrasound, CT or MRI. CRS and HIPEC are still recommended as the standard treatment for PMP.
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