AP-NOSES: A Prospective, Multicentre Registry of Natural Orifice Specimen Extraction in Minimally Invasive Colorectal Surgery Across the Asia-Pacific Region

What this Trial Is About

Researchers are evaluating natural orifice specimen extraction (NOSE), a minimally invasive surgical technique for colorectal surgery where the specimen is removed through natural openings like the anus or vagina instead of an abdominal incision. This prospective multicenter observational registry compares outcomes of NOSE with traditional transabdominal specimen extraction, focusing on long-term results such as incisional hernia risk and patient-reported experiences. The study aims to provide comprehensive data on wound complications, bowel, urinary and sexual function, and cancer outcomes across several centers in the Asia-Pacific region. The study includes two groups: patients planned for NOSE extraction and those planned for transabdominal extraction, both undergoing elective minimally invasive colorectal surgery. Surgical methods, perioperative care, and follow-up remain according to each center’s usual practice without mandated changes. Data on surgical details, complications, and oncologic outcomes are collected prospectively, with patient-reported quality-of-life and functional assessments at multiple time points up to two years after surgery. Participants will be followed for up to 24 months after their surgery to evaluate the time to incisional hernia and other complications. Researchers will collect clinical data, patient questionnaires on quality of life, body image, bowel and sexual function, as well as cancer recurrence outcomes. The study uses validated tools such as EQ-5D-5L, Body Image Scale, and Low Anterior Resection Syndrome score. Data are securely stored and no changes to routine care are required, ensuring participant safety and standard treatment continuity.

AP-NOSES: A Prospective Multicentre Registry of Natural Orifice Specimen Extraction in Minimally Invasive Colorectal Surgery