Abstract
Ovarian cancer is known to cause the highest mortality of gynecologic cancers. We present the case of an 89-year-old Caucasian female who presented to her surgeon with a large 33.5 cm abdominopelvic mass. Imaging done before surgery and surgical resection found the mass to be a very large ovarian tumor, and subsequent histopathology found the tumor to be a moderately differentiated mucinous ovarian carcinoma (MOC) that weighed 8.16 kg with dimensions of 33.5 × 32.1 × 16.5 cm. Histological staining revealed the tumor cells to be nonspecific overall but in favor of a primarily ovarian source. While primary MOCs tend to be relatively larger when compared to other ovarian tumors (>10 cm), there have been few documented cases of ovarian tumors, specifically primary MOCs, presenting at this large of a size.