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- Title
Minimally invasive surgery for colorectal cancer with persistent descending mesocolon: radiological findings and short-term outcomes.
- Authors
Hanaoka, Marie; Hino, Hitoshi; Shiomi, Akio; Kagawa, Hiroyasu; Manabe, Shoichi; Yamaoka, Yusuke; Kato, Shunichiro; Kinugasa, Yusuke
- Abstract
<bold>Background: </bold>Persistent descending mesocolon (PDM) is typically asymptomatic. However, features such as adhesion and variations in vessel anatomy could affect the surgical techniques for colorectal cancer (CRC). This study aimed to investigate the frequency and radiological features of PDM. Short-term outcomes after conventional laparoscopic surgery (CLS) for CRC with PDM were also investigated to assess the feasibility of CLS and identify strategies for minimally invasive surgery (MIS) in CRC with PDM.<bold>Methods: </bold>Patients who underwent MIS, including CLS and robot-assisted laparoscopic surgery (RALS), for left-sided CRC between April 2016 and June 2019, were investigated. PDM was defined as the existence of the right border of the descending colon inside the right border of the left kidney based on preoperative computed tomography findings.<bold>Results: </bold>Radiological findings of 837 patients were examined, and PDM was found in 19 (2.3%) patients. Radiality of the inferior mesenteric artery (IMA) was found in 5 of 19 (26.3%) PDM cases, which was significantly higher than that in non-PDM cases. The median lengths between the IMA and inferior mesenteric vein (IMV) and between the IMV and descending colon in PDM cases were 14.8 mm and 17.2 mm, respectively, which were significantly shorter than those in non-PDM cases. Short-term outcomes were evaluated only in CLS cases since the rate of hybrid surgery among RALS cases differed between non-PDM and PDM cases (0% vs. 44.4%), which would affect the surgical outcomes. The short-term outcomes in 447 CLS cases were similar between PDM and non-PDM cases. The frequency of extracorporeal division of the left colic artery (LCA) and IMV was significantly higher in PDM than in non-PDM cases (70.0% vs. 5.7%).<bold>Conclusions: </bold>This radiological definition of PDM was feasible. CLS for left-sided CRC with PDM was feasible, and dividing the LCA and IMV extracorporeally would be vital for safe surgery.
- Subjects
COLORECTAL cancer; MINIMALLY invasive procedures; MESENTERIC veins; PROCTOLOGY; COMPUTED tomography; MESENTERY surgery; MESENTERY; ENDOSCOPIC surgery; MESENTERIC artery; LAPAROSCOPY
- Publication
Surgical Endoscopy & Other Interventional Techniques, 2021, Vol 35, Issue 6, p2797
- ISSN
1866-6817
- Publication type
journal article
- DOI
10.1007/s00464-020-07713-2