Evidence map›Paper›PMID 39467885›Full record

ArticleSurgical endoscopy2025

Short-term outcomes of da Vinci SP versus Xi for rectal cancer surgery: a propensity score matching analysis of two tertiary center cohorts.

Min Hyun Kim, Songsoo Yang, Yong Sik Yoon, Young Il Kim, Jong Lyul Lee, Chan Wook Kim, In Ja Park, Seok-Byung Lim, Chang Sik Yu

Abstract readComparative StudyMulticenter Study
PubMed Publisher
In one paragraph

Article in Surgical endoscopy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Min Hyun Kim *Division of Colon and Rectal Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea.
Songsoo Yang *Department of Surgery, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea.
Yong Sik YoonDivision of Colon and Rectal Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea. yoonys@amc.seoul.kr.ORCID 0000-0002-3196-8423
Young Il KimDivision of Colon and Rectal Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea.
Jong Lyul LeeDivision of Colon and Rectal Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea.
Chan Wook KimDivision of Colon and Rectal Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea.
In Ja ParkDivision of Colon and Rectal Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea.
Seok-Byung LimDivision of Colon and Rectal Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea.
Chang Sik YuDivision of Colon and Rectal Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study compares the perioperative outcomes of robotic rectal cancer surgery between da Vinci single-port (SP) system, the most recent system allowing minimally invasive surgery with reduced ports, and the da Vinci Xi system.

methodsPatients who underwent robotic surgery for rectal adenocarcinoma from January 2016 to September 2023 at two tertiary referral centers were included. A retrospective analysis was conducted to compare key parameters between patient cohorts before and after propensity score matching.

resultsA total of 378 patients (SP, 65 vs. Xi, 313) were analyzed. The SP group comprised a higher proportion of females (44.6% vs. 28.4%; p = 0.016) and a higher tumor location (8.25 cm vs. 6.71 cm from the anal verge; p < 0.001) than did the Xi group. SP surgery promoted a shorter total incision length (4.9 cm vs. 9.2 cm; p < 0.001), lower maximum pain scores (5 vs. 7; p < 0.001), and shorter hospital stay (6 vs. 7 days; p < 0.001) than did Xi surgery. Operation time (175 vs. 182 min; p = 0.829) and postoperative complications (9.2% vs. 12.1%; p = 0.650) did not significantly differ between the groups. Lower lying rectal tumors were more frequently treated using the Xi system than the SP system, promoting a higher diverting stoma rate (13.8% vs. 45.4%; p < 0.001) and a lower anastomosis level (4.6 cm vs. 3.3 cm; p < 0.001). After 1:1 matching, SP maintained its advantages over Xi in terms of incision length (p < 0.001), maximum pain scores (p = 0.001), and hospital stay (p < 0.001). Overall postoperative complication rates were similar between both groups (10.8% vs. 12.3%; p = 0.777).

conclusionsThe da Vinci SP system continues to offer minimal invasive benefits in rectal cancer surgery. However, the Xi system's instrument diversity provides a certain advantage, particularly in cases involving low-lying rectal tumors. Tailoring robotic approaches based on individual patient characteristics remains pivotal for optimizing outcomes of rectal cancer surgery.

Indexed as

AdenocarcinomaLength of StayPropensity ScoreRectal NeoplasmsRobotic Surgical ProceduresTertiary Care CentersAdultAgedFemaleHumansMaleMiddle AgedOperative TimePostoperative ComplicationsRetrospective StudiesTreatment Outcomeda Vinci SPda Vinci XiMinimally invasive surgeryRectal cancerRobotic surgery

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.