Pseudomyxoma peritonei et ovarii associated with sequential ovarian and appendicular tumors and acromegaly.

Pseudomyxoma peritonei associated with highly differentiated mucinous, intestinal-type ovarian tumor is reported in a 46-year-old acromegalic patient. Five years after its discovery a second operation revealed a mucinous cystadenoma of the appendix. The coexistence of pseudomyxoma peritonei with ovarian and appendicular tumors is rare, raising questions about the primary was origin of the peritoneal tumor. In this case the primary was ovarian while the appendicular tumor occurred later. Since acromegaly is associated with a high risk for the development of colorectal tumors, it could also have elicited a similar response in the intestinal-type ovarian tumor and the appendicular neoplasm found in this patient. The role of appendectomy in the surgical treatment and staging of ovarian tumors is stressed.