“…Presence of malignant cells in ascites and widespread peritoneal tumor with superficial invasion of pelvic organs are the typical intrao perative appearance of PSPC [5,6], Neither these charac teristics nor immunoperoxidase staining of DPAS or PAS were positive in this case, excluding PSPC from the diag nosis [7], Besides, tumor cells in this case were different from the mésothélial cells by being bland and uniform and by containing microvilli and vesicular nuclei. They did not have microcystic or sarcomartoid microscopic patterns, which are characteristic of malignant mesothe lioma [6], The diagnosis of the peritoneal metastasis was the most likely. In fact, metastatic neoplasms are by far the most common tumors encountered in the female peri toneum [5], Most are associated with known primary tumor sites, such as the ovary, the gastrointestinal tract, or the breast.…”