Related Experiment Video
Updated: May 3, 2026
Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer
Published on: February 12, 2022
Robot-Assisted Laparoscopic Resection With the Transanal Approach for Massive Rectal Gastrointestinal Stromal Tumor:
Yusuke Yoshida1, Fuminori Teraishi1, Ryohei Shoji1
1Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, JPN.
Abstract:
Rectal gastrointestinal stromal tumors (GISTs) are often asymptomatic and may be detected as giant tumors. This may require highly invasive surgery for radical resection. Here, we describe a 74-year-old man with a locally advanced non-metastatic GIST in the right anterolateral wall of the lower rectum. The tumor was giant (128 × 93 mm), and invasion into adjacent organs (right seminal vesicle and prostate gland) was suspected. Although neoadjuvant chemotherapy (NAC) with imatinib reduced the tumor size, it was still giant, 80 mm in diameter. Therefore, we performed super-low anterior resection using a robot-assisted laparoscopic approach with the transanal approach. The bi-directional approach enabled safe and precise surgery, is expected to increase the rate of anorectal preservation as well as R0 resection, and may prevent a decline in quality of life.
