Evidence map›Paper›PMID 14735340›Full record

ArticleSurgical endoscopy2004

Hematogenous tumor cell dissemination during colonoscopy for colorectal cancer.

M Koch, P Kienle, P Sauer, F Willeke, K Buhl, A Benner, T Lehnert, C Herfarth, M von Knebel Doeberitz, J Weitz

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Article in Surgical endoscopy, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
–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

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

10 authors.

M KochDivision for Molecular Diagnostics and Therapy, Department of Surgery, University of Heidelberg, INF 110, D-69120 Heidelberg, Germany.
P Kienle
P Sauer
F Willeke
K Buhl
A Benner
T Lehnert
C Herfarth
M von Knebel Doeberitz
J Weitz

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIt has long been suspected that mechanical influences may enhance the release of viable colorectal cancer cells into the circulation. The objective of this study was to determine the extent of hematogenous tumor cell spread in colorectal cancer patients during colonoscopy.

methodsPeripheral venous blood samples were taken before and after colonoscopy from 44 patients with colorectal cancer. Blood samples were examined using a reverse-transcriptase polymerase chain reaction assay to amplify cytokeratin 20 transcripts.

resultsEleven patients with colorectal cancer displayed circulating tumor cells before and after colonoscopy (25%), whereas tumor cells were detected in six of 44 patients (14%) only after the procedure (p = 0.03, McNemar's test: tumor cell detection before after colonoscopy). All control samples consistently tested negative.

conclusionsMechanical forces may result in enhanced release of viable colorectal cancer cells into the circulation; however, the clinical significance of these results needs to be clarified.

Indexed as

Neoplastic Cells, CirculatingAdenocarcinomaAdultAgedAged, 80 and overBiomarkers, TumorColonic PolypsColonoscopyColorectal NeoplasmsFemaleHumansInsufflationIntermediate Filament ProteinsKeratin-20MaleMiddle AgedBiomarkers, TumorIntermediate Filament ProteinsKeratin-20KRT20 protein, human

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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.