Experimental: Laparoscopic Right Hemicolectomy With Transrectal Specimen Extraction

STEP 1: Dissection and separation The mesentery and vessels were dissected and separated according to the principle of complete mesocolic excision.~STEP 2: Intracorporeal anastomosis An enterotomy was performed on the antimesenteric side of the ileum at the edge of the staple line. This maneuver was replicated on the transverse colic side. Subsequently, the cartridge jaw of the stapler was inserted into the transverse colon. The stapler was fired and withdrawn, and the common enterotomy was sealed by using another linear stapler.~STEP 3: Transrectal specimen extraction A longitudinal incision was made on the anterior of wall of the upper rectum. The assistant employed oval forceps to extract the specimen along with the protective sleeve through the incision in the upper rectum. After the complete extraction of the specimen, a full-layer running suturing was performed to close the incision.