Evidence map›Paper›PMID 30151676›Full record

Observational studyWorld journal of surgery2019

Prognostic Impact of Perineural Invasion in Rectal Cancer After Neoadjuvant Chemoradiotherapy.

Chang Hyun Kim, Seung-Seop Yeom, Soo Young Lee, Hyeong Rok Kim, Young Jin Kim, Kyung Hwa Lee, Jae Hyuk Lee

Abstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in World journal of surgery, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 13% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 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

7 authors at 2 institutions in 1 country.

Chang Hyun KimDepartment of Surgery, Chonnam National University Hwasun Hospital and Medical School, Gwangju, Republic of Korea.
Seung-Seop YeomDepartment of Surgery, Chonnam National University Hwasun Hospital and Medical School, Gwangju, Republic of Korea.
Soo Young LeeDepartment of Surgery, Chonnam National University Hwasun Hospital and Medical School, Gwangju, Republic of Korea.
Hyeong Rok KimDepartment of Surgery, Chonnam National University Hwasun Hospital and Medical School, Gwangju, Republic of Korea. drkhr@jnu.ac.kr.
Young Jin KimDepartment of Surgery, Chonnam National University Hwasun Hospital and Medical School, Gwangju, Republic of Korea.
Kyung Hwa LeeDepartment of Pathology, Chonnam National University Hwasun Hospital and Medical School, Gwangju, Republic of Korea.
Jae Hyuk LeeDepartment of Pathology, Chonnam National University Hwasun Hospital and Medical School, Gwangju, Republic of Korea.
Chonnam National University Hospital · KRChonnam National University Hwasun Hospital · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPerineural invasion (PNI) has emerged as an important factor related to colorectal cancer spread; however, the impact of neoadjuvant chemoradiotherapy (nCRT) on PNI remains unclear. Herein, we investigated the prognostic value of PNI, along with lymphovascular invasion (LVI), in rectal cancer patients treated with nCRT.

methodsThis single-center observational study of pathologic variables, including PNI and LVI, analyzed 1411 invasive rectal cancer patients (965 and 446 patients treated with primary resection and nCRT, respectively).

resultsThe overall detection rates of LVI and PNI were 16.7 and 28.8%, respectively. The incidence of LVI was significantly lower in patients treated with nCRT (8.1 vs. 20.6%, P < .001); this was confirmed by multivariate analysis. However, PNI was not affected by nCRT (with nCRT 28.3% vs. without nCRT 29.1%, P = .786). In the 446 patients with nCRT, multivariate analysis revealed that PNI was an independent prognostic factor for both disease-free survival (DFS) and overall survival (OS). For the prediction of both 5-year DFS and OS, the C-index for the combinations of T-stage with the PNI (TPNI) system showed favorable result, especially in patients with a total number of harvested lymph nodes <8.

conclusionPNI is a meaningful prognostic factor for rectal cancer patients treated with nCRT, especially when <8 lymph nodes are harvested. The lack of influence of nCRT on the PNI incidence suggests that residual tumor cells with PNI are more radioresistant or biologically aggressive than those without.

Indexed as

AdenocarcinomaAgedChemoradiotherapyDisease-Free SurvivalFemaleHumansLymph Node ExcisionMaleNeoadjuvant TherapyNeoplasm InvasivenessPerineumPrognosisRectal NeoplasmsRepublic of Korea

Identifiers

PMID30151676
OpenAlexW2889486159

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.