Oncological Outcomes After Pressurized Intraperitoneal Aerosol Chemotherapy (PIPAC) in the Treatment of Peritoneal Carcinomatosis.

BACKGROUND: Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a new surgical technique for the treatment of initially unresectable peritoneal carcinomatosis (PC). Our objective was to assess its oncological outcomes. METHODS: Between July 2016 and September 2020, data from 100 PIPAC procedures with oxaliplatin or doxorubicin-cisplatin in 49 patients with PC (all etiologies) were analyzed. We studied the evolution of the peritoneal cancer index (PCI), the need for radical surgery (R0), and overall survival (OS). RESULTS: The patients' median age was 65 (59; 71) years, and 55.1% were women. Median PIPAC procedures per patient were 2 (1-3), and 28 (57.1%) underwent more than one PIPAC procedure. Median PCI at the first PIPAC was 19 (15-22). PCI decreased for 37%, remained stable for 29.6%, and increased for 33.4% patients. Four (8.3%) underwent radical R0 surgery after PIPAC. After a median follow-up of 16.1 months (1.5-90.1), the median overall survival from PC diagnosis was 29.1 months (14.8-34.3), with a median gastric and colorectal PC survival of 11.3 (7.2-34.3) and 29.1 months (16.1-31) respectively. Overall survival after the first PIPAC session was 11.6 months (6-17.3), with median survival after gastric and colorectal PCs being 6 (2.9-15.5) and 13.3 months (5-17.6), respectively. Stratification of patients according to the number of lines of systemic chemotherapy, PIPAC procedures, and the chronology of PC onset did not result in a significant difference in survival. CONCLUSION: The OS was in line with the literature. PIPAC could delay oncological progression and improve survival. These encouraging results justify the ongoing and future evaluations of PIPAC by prospective randomized trials.

Association between Enhanced Recovery After Surgery (ERAS) protocol, risk factors and 3-year survival after colorectal surgery for cancer in the elderly.

INTRODUCTION: As life expectancy is currently growing, more elderly and fragile patients need colorectal resection for cancer. We sought to assess the link between enhanced rehabilitation after surgery (ERAS), risk factors and overall survival at 3 years, in patients aged 65 and over. METHODS: Between 2005 and 2017, all patients undergoing colorectal resection for cancer were included. Overall survival at 3 years was compared for patients treated in following ERAS guidelines compared to conventional treatment (pre-ERAS). RESULTS: 661 patients were included (ERAS, n = 325; pre-ERAS, n = 336). The 3-year overall survival rate was significantly better regardless of age for ERAS vs pre-ERAS patients (73.1% vs 64.4%; p = 0.016). With overall survival rates of 83.2% vs 73.8%, 65.4% vs 62.8% and 59.6% vs 40% for the age bands 65-74, 75-84 and ≥ 85 years. The analysis of survival at 3 years by a multivariate Cox model identified ERAS as a protective factor with a reduction in the risk of death of 30% (HR = 0.70 [0.50-0.94], p = 0017) independently of other identified risk factors: age bands, ASA score > 2, smoking, atrial fibrillation and abdominal surgery. This result is confirmed by an analysis of the propensity score (HR = 0.67 [0.47-0.97], p = 0.032). CONCLUSIONS: Our study shows that ERAS is associated with better 3-year survival in patients undergoing colorectal resection for cancer, independent of risk factors. The practice of ERAS is effective and should be offered to patients aged 65 and over.

Assessment of postoperative pain after pressurized intraperitoneal aerosol chemotherapy (PIPAC) in the treatment of peritoneal metastasis.

PURPOSE: Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a new surgical technique, for the treatment of initially unresectable peritoneal metastasis (PM). Our objective was to assess postoperative pain and morbidity. METHODS: Between July 2016 and September 2020, data from 100 consecutive PIPAC procedures with oxaliplatin (PIPAC Ox) or doxorubicin-cisplatin (PIPAC C/D) in 49 patients with PM (all etiologies) were analyzed. Pain was self-assessed using a visual analog scale (VAS) of 0-10. RESULTS: The median PIPAC procedures per patient were 2 [1-3]. Patients indicated greatest pain at 4 pm on the day of the procedure (D0) and on postoperative D1 at 8 am and 4 pm. Postprocedural moderate-to-severe pain (VAS 4-10) was more frequent with PIPAC Ox than with PIPAC C/D, respectively 14 (36.8%) vs 7 (13.5%); p = 0.010. Hospitalization was longer for patients with moderate-to-severe pain than for others (median 4 days [3-7] vs 3 days [2-4], p = 0.004). Multivariate analysis identified oxaliplatin as a factor associated with greater pain (OR [95% CI], 2.95 [1.10-7.89]. Opiate administration was similar after PIPAC Ox and PIPAC C/D procedures, p = 0.477. CONCLUSION: PIPAC was well-tolerated, and pain was well-controlled in the majority of patients. Pain was greatest at 4 pm on D0 and 8 am and 4 pm on D1. PIPAC Ox is associated with greater pain than PIPAC C/D, independently of opiate treatment. Moderate-to-severe pain was associated with longer hospital stays.

Effect of implementation of enhanced recovery after surgery (ERAS) protocol and risk factors on 3-year survival after colorectal surgery for cancer-a retrospective cohort of 1001 patients.

PURPOSE: Several recent studies have shown that the enhanced recovery after surgery (ERAS) protocol reduces morbidity and mortality and shortens the length of stay compared to conventional recovery strategy (pre-ERAS). The aim of this study was to evaluate the effect of the implementation of this protocol on 3-year overall survival and postoperative outcome in patients undergoing colorectal resection for cancer. METHODS: This was a retrospective, single-center, comparative, and non-randomized study. Between January, 2005, and December, 2017, 1001 patients were included (ERAS, n = 497; pre-ERAS, n = 504). RESULTS: The 3-year overall survival rate was significantly better for ERAS than for pre-ERAS patients (76.1 vs 69.2%; p = 0.017). The length of hospital stay (median 10 days vs 15; p = ≤ 0.001) and the 90-day readmission rate (15 vs 20%; p = 0.037) were significantly lower in the ERAS group. Three-year recurrence-free survival (p = 0.398) and 90-day complications (p = 0.560) were similar in the two groups. Analysis of 3-year survival by a multivariate Cox model identified ERAS as a protective factor with a 30% reduction in the risk of death: (HR = 0.70 [0.55-0.90]). CONCLUSION: The implementation of the ERAS protocol was associated with an improvement in 3-year survival, a reduction of the length of hospital stay and the rate of readmission. ERAS is associated with better 3-year survival, independent of other commonly considered parameters. An ASA score > 2, smoking, a history of cancer, and atrial fibrillation are deleterious risk factors linked to earlier mortality.

Effect of Pressurized Intraperitoneal Aerosol Chemotherapy on the Survival Rate of Patients with Peritoneal Carcinomatosis of Gastric Origin.

INTRODUCTION: Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a new surgical technique for the treatment of initially unresectable peritoneal carcinomatosis (PC). Our objective was to compare the results of PIPAC associated with systemic chemotherapy (PIPAC_CHEM) with those of systemic chemotherapy alone (ONLY_CHEM) in patients with gastric PC without metastasis other than peritoneal, and the WHO performance status < 3. METHODS: This was a retrospective, single center, comparative non-randomized study. Seventeen PIPAC_CHEM patients were compared to 29 ONLY_CHEM patients. The primary endpoint was overall survival at 6 months from diagnosis of PC. RESULTS: Ninety-eight patients were screened and 46 were included (PIPAC_CHEM, n = 17; ONLY_CHEM, n = 29). The PIPAC_ CHEM population was significantly younger (median 64 years [56; 68] vs 74 years [61; 79]; p = 0.0054). Median PIPAC session per patient is 2 [1-3]. Six-month survival was significantly higher in the PIPAC_CHEM group than in the ONLY_CHEM group 16/17 (94.1% [65-99.2]) vs 19/29 (65.5% [45.4-79.7]), respectively; p = 0.029. Over the entire follow-up, median survival [95% CI] was 12.8 months [7.2-34.3] with PIPAC vs 9.1 months [5.4-11.5] without, p = 0.056. At 6 months, median length of additional hospitalization was significantly less for PIPAC_CHEM (median 2 days [2-7]) than without PIPAC (median 11 days [3-21]) (p = 0.045). CONCLUSION: The overall survival at 6 months after the diagnosis of carcinomatosis was significantly better for PIPAC_CHEM patients. This difference appears to continue until at least 18 months. At 6 months, days of additional hospitalization was significantly less in the PIPAC_CHEM group. TRIAL REGISTRATION: Clinicaltrials.gov Identifier: NCT 04,879,953.