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Is an uncomplicated postoperative recovery following total pelvic exenteration a more important prognostic factor
Charlotte Ralston1, Alison Hainsworth1, Julien de Naurois1
1Guy's and St Thomas' NHS Foundation Trust, London, UK.
Aim:
Total pelvic exenteration (TPE) can achieve an R0 resection in locally advanced and recurrent rectal cancer (LARC and RRC) and remains the only curative option. The resultant high morbidity creates prolonged complex recoveries, rendering patients unfit for adjuvant chemotherapy. This study aims to evaluate the impact of this on overall survival (OS) and disease-free survival (DFS) as it has not been studied previously.
Method:
This is a retrospective single-centre study from 2017 to 2021 evaluating patients with LARC or RRC who underwent a curative TPE. Demographics, oncological history, perioperative data [using Clavien-Dindo (CD) scoring], disease recurrence and mortality were analysed using multivariate Cox regression to assess the impact of variables on DFS and OS.
Results:
A total of 120 patients were included with a median follow-up of 3 years. 28% of patients received adjuvant chemotherapy, 27.5% had surgical follow-up and 44% missed systemic treatment. Missed treatment was predominantly due to prolonged recovery or poor performance status (59%). Patients who missed adjuvant chemotherapy experienced significantly higher CD scores (p = 0.0031), reintervention rates (p=0.0056) and further related surgeriesp (p = 0.0314). Missing adjuvant chemotherpy is a significant factor for poorer survival, with almost a three times higher mortality (p=0.0096, hazard ratio 2.7). R status was not a significant factor for OS following multivariate analysis (p = 0.336), indicating that another factor has an impact on survival within the first 2 years.
Conclusions:
In the initial 2 years after exenteration, an uncomplicated postoperative recovery allows for the delivery of adjuvant chemotherapy, prolonging survival. R0/R1 status was not the main prognostic factor. Longer follow-up and further multivariate analysis may influence decisions about aggressive R0 resection balanced against the patient being fit for chemotherapy postoperatively.
