Abstract
Background
The optimal surgical approach for clinical T4 (cT4) rectal cancer is unknown. This study was conducted to clarify short- and long-term outcomes of robotic surgery for cT4 rectal cancer.
Methods
In our retrospective cohort study, we enrolled patients who underwent robotic surgery for cT4 rectal cancer within 15 cm from the anal verge between 2011 and 2018. The short- and long-term outcomes were evaluated.
Results
Of a total of 122 eligible patients, 70 (57%) had cT4a tumors and 52 (43%) had cT4b tumors. Thirty-five patients (29%) had distant metastasis and 21 (17%) underwent preoperative chemoradiotherapy. Thirty-four patients (28%) underwent combined resection of adjacent organs and 43 (35%) underwent lateral lymph node dissection. The median operative time was 288 min and the median blood loss was 11 ml. No patients required conversion to open surgery. The incidences of postoperative complications of grades II, III, and IV or more according to the Clavien–Dindo classification were 17.2%, 3.5%, and 0%, respectively. Seventy-three patients (60%) had pathological T4 tumors, and the incidence of positive resection margins was 4.9%. The median follow-up time was 42.9 months. The 3-year overall survival, disease-free survival, and cumulative local recurrence rates were 87.5%, 70.4%, and 4.0%, respectively.
Conclusions
The short- and long-term outcomes of robotic surgery for cT4 rectal cancer were favorable. Robotic surgery is considered to be a useful approach for cT4 rectal cancer.
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Dr. Yusuke Yamaoka, Dr. Akio Shiomi, Dr. Hiroyasu Kagawa, Dr. Hino Hitoshi, Dr. Shoichi Manabe, Dr. Shunichiro Kato, and Dr. Marie Hanaoka have no conflicts of interest or financial ties to disclose.
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Yamaoka, Y., Shiomi, A., Kagawa, H. et al. Robotic surgery for clinical T4 rectal cancer: short- and long-term outcomes. Surg Endosc 36, 91–99 (2022). https://doi.org/10.1007/s00464-020-08241-9
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DOI: https://doi.org/10.1007/s00464-020-08241-9