Abstract
To identify preoperative/intraoperative patient and tumor characteristics associated with an increased risk of tumor spillage during minimally invasive surgery (MIS) for early-stage ovarian cancer (OC). The secondary end point was to develop a score system able to estimate the risk of tumor rupture during MIS. Retrospective observational study. Patients with International Federation of Gynecology and Obstetrics stage I OC. Patients aged ≥18 years old, with International Federation of Gynecology and Obstetrics stage IA to IC1 OC of any histology. Preoperative and intraoperative characteristics of patients treated with MIS for early-stage OC at Policlinico Universitario Agostino Gemelli, IRCCS in Rome, Italy, from January 1, 2001, to December 31, 2017, were collected. A total of 151 patients were included. Previous pelvic surgery was more represented in patients with nonruptured tumors (46.0% vs 63.4%; p=.042). In addition, a larger tumor diameter (p <.001), a higher body mass index (p=.032), ultrasound characteristics (p=.029), and adhesions to large bowel (14% vs 2.0%; p=.003), uterus (44% vs 6.9%; p <.001), contralateral ovary (8.0% vs 0%; p=.004), ovarian fossa (64% vs 14.9%; p <.001), and pouch of Douglas peritoneum (32% vs 4.0%; p <.001) increased rupture rate. At multivariate analysis, a larger tumor diameter (p <.001) and adhesions to ovarian fossa peritoneum (p=.007) were independently associated with intraoperative cancer spillage and included in the score calculation. A disease-free survival (DFS) difference between the rupture group and the no-rupture group was detected (5-year DFS, 74.9% vs 94.4%; p=.011), with superimposable overall survival (5-year overall survival, 91.2% vs 97.9%; p=.089). Some preoperative/intraoperative characteristics increase the risk of tumor rupture during MIS for early-stage OC. A laparoscopic predictive model of capsule disruption could be considered to intraoperatively tailor surgical approach to prevent tumor spillage and avoid affecting patient's DFS.
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