Here is a second example of a cystadenocarcinoma with the uterus and contralateral ovary for comparison. It is easy to see why ovarian epithelial carcinomas produce lower abdominal pain and enlargement, intestinal obstruction, and urinary frequency, dysuria, and pelvic pressure.
Malignant tumors cause progressive weakness, weight loss, and cachexia.
Ascites may occur if the tumor beyond its capsule and seeds the peritoneal cavity. Aspiration of the peritoneal fluid may demonstrate exfoliated tumor cells. Regional nodes are often involved, distant metastases may be seen in the liver, lungs, and GI tract. Because these tumors tend to be quite large and extensive at diagnosis, the 5-year survival rates are poor.