Background: Neuroendocrine tumor liver metastases (NELM) are a major source of morbidity and mortality in neuroendocrine tumor patients and can be treated with hepatic debulking surgery (HDS). This study aims to identify variables associated with postoperative morbidity in NELM HDS.
Study Design: This analysis uses the American College of Surgeons NSQIP targeted hepatectomy-specific Participant User File from 2014 to 2020. Surgeries were grouped by number of hepatic resections performed (1 to 5, 6 to 10, greater than 10). Multivariable logistic regression and matching were used to identify prognostic factors of morbidity.
Results: A total of 1,163 patients were included. A total of 1,011 (87%) had 1 to 5 hepatic resections, 101 (8.7%) had 6 to 10 resections, and 51 (4.4%) had greater than 10 resections. The overall complication rate was 35%, and surgical and medical complications reached 30% and 13%, respectively. Mortality occurred in 11 patients (0.9%). Significantly higher rates of any (34% vs 35% vs 53%, p = 0.021) and surgical complications (29% vs 28% vs 49%, p = 0.007) were noted for those undergoing greater than 10 resections (1 to 5 resections, 6 to 10, greater than 10). "Bleeding requiring transfusion" (p < 0.0001) occurred more frequently in the greater than 10 resection group. On multivariable logistic regression, greater than 10 resections were an independent risk factor for any (odds ratio [OR] 2.53, p = 0.002; OR 2.52, p =. 0013) and surgical (OR 2.53, p = 0.003; OR 2.88, p = 0.005) complications compared with 1 to 5 resections and 6 to 10 resections, respectively. Medical complications (OR 2.34, p = 0.020) and length of stay greater than 5 days (OR 1.98, p = 0.032) were also increased with greater than 10 vs 1 to 5 resections.
Conclusions: As reported by NSQIP, NELM HDS were performed safely with low mortality. However, more hepatic resections, especially greater than 10, were associated with increased postoperative morbidity and length of stay.
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