A 55-year-old male was incidentally found to have a pelvic mass during a routine ultrasound, leading to further investigation and surgical excision.
After the surgery, the pathology revealed the mass was a mucinous cystadenoma of the appendix, causing a condition known as pseudomyxoma peritonei (PMP).
PMP is a progressive abdominal disease marked by mucinous tumors that produce increasing amounts of fluid, with treatment varying based on the disease stage.