Metastatic choriocarcinoma in the omentum. This male patient had previously undergone radical orchiectomy for a mixed germ cell tumor. The components of the testicular tumor were not known.
About the Disease
Notes: Tumors may secondarily involve the peritoneum by direct spread from the abdominal viscera or by metastatic seeding from distant sites. The primary tumors are most often located in the ovaries, uterus, large bowel, or pancreas. The ovarian and uterine primaries are usually of serous type. The metastatic deposits may form discrete tumor nodules or cause diffuse thickening of the peritoneum. Peritoneal carcinomatosis often results in recurrent ascites and has overlapping morphologic features with malignant mesothelioma.