Abstract:

A 50 years old male patient was initially diagnosed as low rectal cancer, with BMI of 26.7 kg/m² and cancer staging of cT₃N₁M₀. After preoperative neoadjuvant radiotherapy, the cancer staging was ycT₂N₀M₀, and the distance between the lower edge of the tumor and the anal edge was 4.5 cm. Two synchronous surgical groups performed laparoscopic assisted transanal total mesorectal excision six weeks after neoadjuvant radiotherapy. The specimens of total mesorectal excision was taken out through a small incision in the lower abdomen, and the reconstruction of digestive tract was completed under the assistance of laparoscopy. The blood supply of the anastomosis was checked by using fluorescence laparoscopy with indocyanine green imaging.

Key words: Rectal neoplasms, Radiotherapy, adjuvant, Transanal total mesorectal excision