Abstract
Background
In selected patients with colorectal peritoneal carcinomatosis (PC), cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemoperfusion (HIPEC) may improve survival. We aimed to assess whether neoadjuvant chemotherapy with or without bevacizumab is indicated in this patient population.
Methods
Colorectal PC patients were treated with CRS and HIPEC using oxaliplatin (200–460 mg/m2) or mitomycin C (35 mg/m2). Postoperative outcome and long-term survival were prospectively recorded. The impact of clinical variables on overall survival (OS) was assessed using univariate and Cox multivariate analysis.
Results
Between October 2002 and May 2012, 166 patients were treated with CRS and HIPEC. Neoadjuvant chemotherapy alone was administered to 21 % and neoadjuvant chemotherapy with bevacizumab to 16 % of patients. Postoperative mortality and major morbidity were 2.4 and 35 %, respectively. Half of the patients received adjuvant chemotherapy. After a median follow-up of 18 months, OS was 27 months (95 % confidence interval 20.8–33.2). On univariate analysis, OS was associated with extent of disease (P < 0.001), neoadjuvant chemotherapy with bevacizumab (P = 0.021), completeness of cytoreduction (CC) (P < 0.001), and adjuvant chemotherapy (P = 0.04), but not with primary disease site, synchronous presentation, or chemoperfusion drug. In multivariate Cox regression, independent predictors of OS were CC (hazard ratio 0.29, P < 0.001) and neoadjuvant therapy containing bevacizumab (hazard ratio 0.31, P = 0.019).
Conclusions
Long-term OS after CRS and HIPEC for colorectal cancer is associated with CC and neoadjuvant therapy containing bevacizumab. This regimen merits prospective study in patients with resectable PC of colorectal origin.
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Acknowledgments
W.C. is a senior clinical investigator of the Fund for Scientific Research–Flanders (FWO). We thank Natacha Rosseel for administering the clinical database.
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The authors declare no conflict of interest.
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Ceelen, W., Van Nieuwenhove, Y., Putte, D.V. et al. Neoadjuvant Chemotherapy with Bevacizumab May Improve Outcome after Cytoreduction and Hyperthermic Intraperitoneal Chemoperfusion (HIPEC) for Colorectal Carcinomatosis. Ann Surg Oncol 21, 3023–3028 (2014). https://doi.org/10.1245/s10434-014-3713-7
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DOI: https://doi.org/10.1245/s10434-014-3713-7