Trans-anal total mesorectal excision in low rectal cancers: Preliminary oncological results of a comparative study.

OBJECTIVE: The management of lower rectal cancers is a therapeutic challenge both from the oncological and functional viewpoints. The aim of this study is to assess the oncological results and postoperative morbidity after transanal total mesorectal excision (TaTME) for low rectal cancer. MATERIAL AND METHODS: In this monocentric retrospective study, we compared the quality of carcinologic resection and the morbidity-mortality between a group of 20 patients undergoing TaTME and 21 patients treated by abdomino-perineal resection (APR) between 2016 to 2019. RESULTS: More patients had a positive circumferential resection margin (CRM) (≤1mm) in the APR group (47.6% vs. 5%; P<0.0036). The difference in the rates of grades I-II and III-IV complications (Clavien-Dindo classification) between the two groups was not statistically significant (50% vs. 57.1% and 5% vs. 9.5% in TaTME and APR, respectively; P=0.7579, P=1.00). The median follow-up was longer in the TaTME group (20 months vs. 11 months; P=0.58). The local recurrence rate did not differ between the two groups (5% vs. 4.8%; P=1.00) CONCLUSION: TaTME provides a reliable total mesorectal resection with an acceptable CRM. However, like any new technique, it requires experience and the learning curve is long.

Two-step pull-through colo-anal anastomosis aiming to avoid stoma in rectal cancer surgery: A "real life" study in a developing country.

BACKGROUND: Delayed colo-anal anastomosis (DCA) is an underused technique rarely performed after resection of primary low rectal adenocarcinoma. The objective of this study was to compare the short-term outcomes of DCA and classical colo-anal anastomosis (CAA). METHODS: This is a retrospective comparative study carried out at two tertiary centres in Morocco and France. It included all patients who underwent colo-anal anastomosis after complete mesorectal excision for primary rectal adenocarcinoma between January 2018 and December 2019. The main outcomes were 90-day morbidity and rates completing the surgical steps of DCA and CAA. RESULTS: Among 215 rectal resections, 45 patients received colo-anal anastomosis, including 19 DCA and 26 CAA. Seventeen patients in the DCA group completed the two steps compared to 16 in the CAA group (89.5% vs. 61.5%, P=0.04). The rates of severe complications (26.9% vs. 26.3%, P=0.96) and anastomotic leakage (42.3% vs. 31.6%, P=0.46) were not different between the two groups. CONCLUSION: This study showed that DCA was associated with a higher rate of completing the two surgical steps, with no difference in overall and severe morbidity. DCA may be a strong alternative to classical colo-anal anastomosis.

Long-term outcome and management of right colonic diverticulitis in western countries: Multicentric Retrospective Study.

AIM OF THE STUDY: Right colonic Diverticulitis (RD) is rare in Europe; few studies have focused on it and its management is not standardised. The aim of this study was to analyse the clinical presentation (complicated, uncomplicated), acute phase management and long-term outcome of RD in western countries. PATIENTS AND METHODS: From 2003 to 2017, 93 consecutive patients who presented with RD were retrospectively included at 11 French Hospital Centres. RESULTS: The study population consisted of two groups: Uncomplicated Right Diverticulitis (URD) group (63.5%, (n=59)) and Complicated Right Diverticulitis (CRD) group (36.5%, [n=34]). 84.7% (n=50/59) of URD were treated conservatively. 41.2% (n=14/34) of patients with CRD had emergency surgery (mostly laparotomy) for Hinchey III peritonitis, clinical intolerance or hemodynamic instability. Altogether 5.2% (n=2/34) patients with CRD had surgery after a cooling off period (initially abscess). The overall rate of severe postoperative complications was low (8%). Recurrence rate was low and comparable in both groups: 6.8% (n=4/59) for URD and 8.8% (n=3/34) for CRD, all recurrences occurred in the same locations with an uncomplicated form, 42.9% (n=3/7) of them had elective laparoscopic surgery and the rest were conservatively treated. Median follow up was 33.2 months. CONCLUSION: Conservative treatment can be proposed safely and efficiently for URD and for selected patients with CRD. Surgery should be reserved for unstable patients or patients with severe forms of complicated diverticulitis in emergency.