Impact of Oophorectomy on Survival and Improving Nutritional Status in Ovarian Metastasis from Colorectal Adenocarcinoma

Abstract

<b><i>Introduction:</i></b> Ovarian metastasis of colorectal cancer is known to have a poor prognosis. This study aimed to elucidate the characteristics of patients who underwent oophorectomy for ovarian metastasis from colorectal cancer. <b><i>Methods:</i></b> This retrospective study included 16 patients who underwent oophorectomy for colorectal cancer metastasis to the ovary from January 2004 to December 2017. Improvement in patient’s symptoms and pre- and postoperative changes in various nutritional and inflammatory indicators were assessed. Survival analysis and identification of prognostic factors were conducted with a median follow-up of 40.7 (5–109) months. <b><i>Results:</i></b> Of 16 patients, 12 had (75%) synchronous and 4 (25%) had metachronous metastasis. Fourteen patients were symptomatic but symptoms resolved postoperatively. Thirteen patients (81.3%) had ascites and 5 (31.3%) had pleural effusion on preoperative computed tomography that disappeared after surgery in all cases. The median value of prognostic nutritional factor was significantly increased postoperatively (36.0 [preoperatively] vs. 47.5, <i>p</i> &lt; 0.0001). The median (interquartile range) values for lymphocyte-C-reactive protein ratio were 715.2 (110–2,607) preoperatively and 6,095.2 (1,612.3–14,431.8) postoperatively (<i>p</i> = 0.0214). The median survival of the entire cohort was 60.4 months. The 3-year survival rates for R0 + R1 and R2 cases were 83% and 24% (<i>p</i> = 0.018), respectively. Univariate analysis showed that R2 resection and low postoperative lymphocyte-C-reactive protein ratio were associated with poor prognosis. <b><i>Conclusions:</i></b> Oophorectomy for ovarian metastasis from colorectal cancers was safely performed. It improved the patients’ symptoms and nutritional status and may result in improved prognosis.