BackgroundCytoreductive peritoneal surgery (CRS) associated with hyperthermic peritoneal chemotherapy (HIPEC) has long been considered the standard treatment for colorectal peritoneal metastases (CPM). However, although efficacy of surgery has been demonstrated, evidence supporting HIPEC’s role is less certain.MethodOverall survival (OS), progression-free survival (PFS) and morbidity were analysed retrospectively for fifty consecutively included patients treated for colorectal CPM with complete CRS and systemic chemotherapy only.ResultsMedian peritoneal cancer index (PCI) was 8 (range 1-24). 23 patients had liver or lung metastases (LLM). 22 patients had synchronous CPM. 27 complications occurred (12 Grade 1/2, 14 Grade 3, 1 Grade 4a, 0 Grade 5). Median follow-up was 62.5 months (95 %CI 45.4-81.3), median survival 32.4 months (21.5-41.7). Three- and 5-year OS were 45.5% (0.31-0.59) and 29.64% (0.17-0.44) respectively. Presence of LLMs associated with peritoneal carcinomatosis was significantly associated with poorer prognosis, with survival at 5 years of 13.95% (95 %CI 2.9-33.6) vs. 43.87% (22.2-63.7) when no metastases were present (P= 0.018). Median PFS was 9.5 months (95 %CI 6.2-11.1).ConclusionWith an equivalent PCI range and despite one of the highest rates of LLM in the literature, our survival data of CRS + systemic chemotherapy only compare well with results reported after additional HIPEC. Tolerance was better with acceptable morbidity without any mortality. Extra-hepatic metastasis (LLM) is a strong factor of poor prognosis. Awaiting the results of the randomized PRODIGE trial, these results indicate that CRS + systemic chemotherapy only is a robust hypothesis to treat colorectal CPM.
Mortality and morbidity after IRFA, with or without resection, are low. Nevertheless, long interventions and concurrent bowel operations increase the risk for septic complications.
689 Background: Neoadjuvant chemotherapy (CT) have been associated with an increased risk of surgery for colorectal liver metastases (CRLM). Irinotecan (IRI) is claimed to induce CT-associated steatohepatitis (CASH) and oxaliplatin (OX) to induce sinusoidal obstruction (SOS). Imputability is sometimes difficult to establish and the impact on postoperative complications is unclear. The objective of this study is to investigate the impact of IRI and OX on induced liver toxicity, and to study the effects of toxicity on surgical outcomes. Methods: Patients (Pts) who received only one line of CT before resection of CRLM were retrospectively included. CASH and SOS were described according to Kleiner and Rubbia-Brandt classifications respectively. Associations were sought between CASH or SOS and various patient and treatment factors, and between patient and treatment factors and the occurrence of post-operative complications grade 3 or over. Results: Among 379 pts operated on for CRLM from 2003 to 2013, 223 were eligible for inclusion; 57 were excluded as there was no healthy hepatic parenchyma to be analyzed. Median age was 64 y [34-88], BMI ≥25 kg/m² for 52%, 8% had diabetes, and 28% had a dyslipidemia. CRLM were synchronous in 76.5%. 65 (39.2%) received Folfox, 95 (57.2%) Folfiri and 6 (3.6%) Folfirinox. Bevacizumab, cetuximab and panitumumab were given in 71 (42.8%), 30 (17.5%), 4 (2.4%) respectively. Extra-hepatic resections were performed in 78 pts (47%). 90-day mortality was 1.8% and 31 pts encountered complications more severe than 3A. Histological hepatoxicity was established for 82 pts (49%) including 33 (19.9%) with grade 2 or 3 SOS and 22 (13%) with CASH. No significant associations were identified between SOS and OX, nor CASH and IRI. BMI ≥ 25 kg/m² was correlated with an increased risk of CASH. Only septic extra-hepatic surgeries were correlated with the prediction of postoperative complications. Conclusions: In this selected series, preoperative CT was not associated to liver toxicity. The presence of histological lesions did not worsen post-operative outcomes. BMI and extra-hepatic surgery were the only co-factors correlated with CASH and post-operative complications respectively.
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