Evidence map›Paper›PMID 42836959›Full record

ArticleSurgery today2026

Robot-assisted surgery for rectal cancer with persistent descending mesocolon: analysis of vascular anatomical features and short-term outcomes.

Aya Narumi, Marie Hanaoka, Shunsaku Nakagawa, Mari Nakagawa, Shinichi Yamauchi, Hiroyasu Kagawa, Masanori Tokunaga, Yusuke Kinugasa

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Article in Surgery today, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Aya NarumiDepartment of Gastrointestinal Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.
Marie HanaokaDepartment of Gastrointestinal Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan. hanasrg1@tmd.ac.jp.ORCID http://orcid.org/0000-0003-3380-7233
Shunsaku NakagawaDepartment of Gastrointestinal Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.
Mari NakagawaDepartment of Gastrointestinal Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.
Shinichi YamauchiDepartment of Gastrointestinal Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.
Hiroyasu KagawaDepartment of Gastrointestinal Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.
Masanori TokunagaDepartment of Gastrointestinal Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.
Yusuke KinugasaDepartment of Gastrointestinal Surgery, Institute of Science Tokyo, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePersistent descending mesocolon (PDM) is a rare congenital anomaly characterized by a medial shift of the descending colon and vascular variations that can complicate colorectal surgery. This study aimed to clarify the PDM-associated vascular anatomy and describe the short-term outcomes of robot-assisted surgery.

methodsWe retrospectively analyzed 541 patients with primary rectal cancer who underwent robot-assisted surgery (2017-2024) and compared the short-term outcomes between the PDM and non-PDM groups. The vascular anatomy, including inferior mesenteric artery (IMA) branching patterns and marginal artery defects, was assessed in 501 patients using preoperative enhanced computed tomography.

resultsPDM was identified in 22 patients (4.1%) in this study. The short-term outcomes were comparable between the groups. The PDM group had a significantly higher prevalence of radial IMA branching patterns and a higher frequency of marginal artery defects than the non-PDM group (9% vs. 2%).

conclusionPDM is associated with a higher prevalence of radial IMA branching patterns. Marginal artery defects were observed more frequently among patients with PDM; however, this finding requires cautious interpretation because of the small number of affected cases and potential verification bias. Appropriate identification and management of vascular variations may contribute to acceptable short-term outcomes of robot-assisted surgery in patients with PDM.

Indexed as

Marginal arteryPersistent descending mesocolonRectal cancerRobot-assisted surgeryVascular anatomy

Identifiers

PMID42836959

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