The mass showed up by accident. A 78-year-old woman was having a CT scan for a pancreatic cyst when radiologists spotted a lesion in her right pelvis. An MRI measured it at 4.5 centimeters and read it as a solid ovarian tumor. She had no symptoms, so her doctors chose to watch it.
Eight years later, it had grown to 6 centimeters and was filled with fluid. The differential now included an ovarian fibroma, a Brenner tumor, and a mucinous cyst. Surgeons opened her abdomen to take it out.
