Association of HIPEC with survival in patients with ovarian metastases of gastrointestinal origin.

Abstract

e15124 Background: Metastatic ovarian involvement in primary gastrointestinal (GI) carcinomas (CA) is associated with a poor prognosis. We performed a survival analysis in patients with ovarian metastases, based on site of primary GI CA (appendiceal, colorectal (CRC), gastric, and pancreatic). We also examined the association between hyperthermic intraperitoneal chemotherapy (HIPEC) and death in these patients. Methods: A search was conducted in a single institution pathology database for patients with primary GI CA and ovarian metastases diagnosed from 2010 to 2017. The search yielded 39 patients, and data pertaining to tumor characteristics and treatment were obtained by chart review. Chi-square (log rank) test was used to test for associations between both site of primary GI CA and HIPEC, and death, and Kaplan-Meier analysis was done. P-value < 0.05 was deemed statistically significant. Results: CRC accounted for the majority of patients (51.29%) with appendiceal CA accounting for 23.08% and gastric and pancreatic cancer making up the remainder. Primary site of malignancy was associated with survival (p = 0.036), favoring those with appendiceal and colorectal primaries. A total of 30 patients (76.92%) received HIPEC. Having undergone HIPEC was significantly associated with survival (p = 0.017). Conclusions: Ovarian metastases secondary to gastric and pancreatic cancer were associated with inferior survival as compared to those with appendiceal or colorectal primaries. A significant association was demonstrated between HIPEC and survival. Further investigation to define the role of HIPEC in the treatment of carcinomas of gastrointestinal primaries is warranted.