Evidence map›Paper›PMID 31512037›Full record

ArticleSurgical endoscopy2020

Predictors of rectal adenoma recurrence following transanal endoscopic surgery: a retrospective cohort study.

Tiffany Chan, Ahmer A Karimuddin, Manoj J Raval, P Terry Phang, Vincent Tang, Carl J Brown

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Article in Surgical endoscopy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.5field-weighted citation impact, top 31% of its field
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

5 citing papers in PubMed, 7 citations in OpenAlex.

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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

6 authors at 4 institutions in 1 country.

Tiffany ChanDivision of General Surgery, Department of Surgery, University of British Columbia, Vancouver, Canada.
Ahmer A KarimuddinDivision of General Surgery, Department of Surgery, St. Paul's Hospital, Vancouver, Canada.
Manoj J RavalDivision of General Surgery, Department of Surgery, St. Paul's Hospital, Vancouver, Canada.
P Terry PhangDivision of General Surgery, Department of Surgery, St. Paul's Hospital, Vancouver, Canada.
Vincent TangFaculty of Medicine, University of Toronto, Toronto, Canada.
Carl J BrownDivision of General Surgery, Department of Surgery, St. Paul's Hospital, Vancouver, Canada. Cbrown@providencehealth.bc.ca.ORCID 0000-0002-7993-9154
St. Paul's Hospital · CAProvidence Health Care · CAUniversity of British Columbia · CAUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTransanal endoscopic surgery is the treatment of choice in patients with rectal adenomas that cannot be removed by endoscopy. However, the risk of adenoma recurrence and optimal surveillance is not well defined. The objective of this study was to characterize the timing and frequency of rectal adenoma recurrence after removal by transanal endoscopic surgery and identify recurrence risk factors.

methodsThis was a retrospective cohort study of a large, single-center academic institution in Vancouver, BC, Canada. Consecutive patients between May 1, 2007 and September 30, 2016 with pathology-confirmed rectal adenoma treated by primary excision with transanal endoscopic surgery and at least 1 year of confirmed endoscopic follow-up were included. Main outcome measures were recurrence rates following TEM as well as risk factors for recurrence.

results297 patients met inclusion criteria. The mean age of patients was 66.5 ± 11.5 years and 57.9% were male. Median follow-up was 623 (range 56-3841) days. A total of 62 recurrences occurred in 41 patients (13.8% of study population). Recurrences were managed with repeat transanal endoscopic surgery or endoscopic resection 67.7% and 25.8% of the time, respectively. Radical resection was required for adenocarcinoma in 4 patients. Recurrence-free survival rates were 93.4% at 1 year, 86.2% at 2 years, and 73.1% at 5 years. After adjusting for individual surgeons, adenoma height, size > 3 cm, high-grade dysplasia, positive margins, and management of the rectal defect, patients who underwent surgery in the latter 5 years of the study had lower odds of recurrence (OR 0.42, 95% CI 0.19, 0.93, p = 0.03).

conclusionsRectal adenomas managed by transanal endoscopic surgery are lesions at high risk for recurrence; surveillance should be performed within the first 2 years and continued for a total of at least 5 years. Most recurrences can be successfully treated with repeat TEM or endoscopic resection.

Indexed as

MicrosurgeryTransanal Endoscopic SurgeryAdenocarcinomaAgedAged, 80 and overCanadaCohort StudiesFemaleFollow-Up StudiesHumansKaplan-Meier EstimateMaleMargins of ExcisionMiddle AgedNeoplasm Recurrence, LocalRectal NeoplasmsRectal adenomaTransanal endoscopic microsurgery

Identifiers

PMID31512037
OpenAlexW2972373894

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Registered trials

None linked

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.