Comparing two surgical joining techniques after rectal cancer surgery
Compares two bowel-joining methods in adults having rectal cancer surgery, tracking recovery.
Plain-language title generated from the registry record
Registry title: Low Powered Colorectal Anastomosis After Rectal Excision (OASIS)
Key facts
- Where
- Madrid and Vigo, SpainSee the 2 sites
AI summary: who the study is looking for
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for adults with rectal cancer low in the rectum, without metastasis, who are having keyhole or robotic surgery to remove the rectum with a stapled join (anastomosis) using powered devices.
- Age
- 18 years or older
- Sex
- All sexes can join.
- Disease stage
- Rectal cancer lower than 12 cm (4.7 in) from the anal verge, needing a stapled join below 7 cm (2.8 in) from the anal verge, with no metastasis.
- Earlier treatment
- Can join with or without treatment before surgery (neoadjuvant treatment). Surgery must be keyhole, robotic or TaTME. Can have a temporary ileostomy or not.
Main reasons for not taking part
- Hand-sewn join (anastomosis)
- Perforated rectal cancer or pelvic infection before surgery
- Inflammatory bowel disease
- Emergency surgery
- Extended TME or pelvic exenteration
Read by machine on 12 November 2026.
Where in Spain
- Hôpital General universitaire MadridMadrid, SpainContact: Patricia TEJEDORNo longer taking part
- Hôpital Universitaire de VigoVigo, SpainContact: Vincenzo VIGORITANo longer taking part
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- Bordeaux Colorectal Institute
- Trial code
- NCT07146334
- Record updated
- 28 August 2025
- Original description
The objectiive of this prospective, international cohort is to compare two anastomotic techniques (DS vs TTSS) by collecting data during the surgery, and postoperatively (morbidity and functional outcomes).Read full original descriptionShow less
Low Powered Colorectal Anastomosis After Rectal Excision : An Exploratory, Observational, Prospective, IDEAL Stage 2b International Cohort Study (OASIS)
The objectiive of this prospective, international cohort is to compare two anastomotic techniques (DS vs TTSS) by collecting data during the surgery, and postoperatively (morbidity and functional outcomes).
The choice of technique is left to the discretion of the surgeon based on her/his practices.
Inclusion: Age ≥ 18; Patients with rectal cancer lower than 12 cm from the anal verge requiring either a stapling anastomosis below 7 cm from the anal verge,; Patients with powered mechanical anastomosis (INTOCARE devices); Patients with no metastasis; Patients operated on by mini-invasive rectal excision (laparoscopic, robotic or TaTME); Patients with or without defunctioning ileostomy; Patients with or without neoadjuvant treatment; Patient who benefits by medicare system; Signed and dated informed consent.
Exclusion: Patients with perforated rectal cancer or preoperative pelvic sepsis ; Patients with inflammatory bowel disease; Patients with handsewn anastomosis; Patients operated on in emergency ; Patients with extended-TME or pelvic exenteration; Pregnancy or breast feeding period; Legal incapacity or physical, psychological social or geographical status interfering with the patient's ability to agree to participate in the study; Persons deprived of liberty or under guardianship.