Figure 7a.

Mucinous cystadenocarcinoma in a 31-year-old woman with acute severe abdominal pain. (a) Axial contrast-enhanced CT image shows an enhancing mass in the right adnexa (black *). Note the normal left ovary (arrow) and ascites (white *). (b) Intraoperative photograph shows rupture of the tumor capsule (arrow), as can be seen with mucinous cystadenocarcinoma. (c) Photograph of the gross pathologic specimen shows a solid and cystic mass containing viscous material (arrow). (d) High-power photomicrograph shows back-to-back glands lined by malignant-appearing cells with little or no intervening stroma (*), characteristic of the confluent glandular/expansile invasive pattern seen in mucinous cystadenocarcinoma. (H-E stain.)