Evidence map›Paper›PMID 28168369›Full record

ArticleEuropean radiology2017

Chemical shift effect predicting lymph node status in rectal cancer using high-resolution MR imaging with node-for-node matched histopathological validation.

Hongmei Zhang, Chongda Zhang, Zhaoxu Zheng, Feng Ye, Yuan Liu, Shuangmei Zou, Chunwu Zhou

Abstract readEvaluation Study
PubMed Publisher
In one paragraph

Article in European radiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

28 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

7 authors.

Hongmei ZhangDepartment of Diagnostic Radiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.17 Pan Jia Yuan NanLi, ChaoYang District, 100021, Beijing, China.
Chongda ZhangDepartment of Diagnostic Radiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.17 Pan Jia Yuan NanLi, ChaoYang District, 100021, Beijing, China.
Zhaoxu ZhengDepartment of Colorectal Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.17 Pan Jia Yuan NanLi, ChaoYang District, 100021, Beijing, China.
Feng YeDepartment of Diagnostic Radiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.17 Pan Jia Yuan NanLi, ChaoYang District, 100021, Beijing, China.
Yuan LiuDepartment of Diagnostic Radiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.17 Pan Jia Yuan NanLi, ChaoYang District, 100021, Beijing, China.
Shuangmei ZouDepartment of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.17 Pan Jia Yuan NanLi, ChaoYang District, 100021, Beijing, China. smzou@hotmail.com.
Chunwu ZhouDepartment of Diagnostic Radiology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.17 Pan Jia Yuan NanLi, ChaoYang District, 100021, Beijing, China. 13581968865@163.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo evaluate the value of the chemical shift effect (CSE) as well as other criteria for the prediction of lymph node status. MATERIALS AND

methodsTwenty-nine patients who underwent radical surgery of rectal cancers were studied with pre- and postoperative specimen MRI. Lymph nodes were harvested from transverse whole-mount specimens and compared with in vivo and ex vivo images to obtain a precise slice-for-section match. Preoperative MR characteristics including CSE, as well as other predictors, were evaluated by two readers independently between benign and metastatic nodes.

resultsA total of 255 benign and 35 metastatic nodes were obtained; 71.4% and 69.4% of benign nodes were detected with regular CSE for two readers, whereas 80.0% and 74.3% of metastatic nodes with absence of CSE. The CSE rendered areas under the ROC curve (AUC) of 0.879 and 0.845 for predicting nodal status for two readers. The criteria of nodal location, border, signal intensity and minimum distance to the rectal wall were also useful but with AUCs (0.629-0.743) lower than those of CSE.

conclusionsCSE is a reliable predictor for differentiating benign from metastatic nodes. Additional criteria should be taken into account when it is difficult to determine the nodal status by using only a single predictor. KEY POINTS: • CSE is good for predicting nodal status with high confidence. • Nodal border and signal intensity are useful for assessing nodal status. • Location of mesorectal nodes could facilitate the prediction of nodal status. • Primary tumour stage could be used as reference for nodal staging.

Indexed as

AdultAgedArea Under CurveFemaleHumansLymphatic MetastasisLymph NodesMagnetic Resonance ImagingMaleMiddle AgedNeoplasm StagingObserver VariationPostoperative CarePreoperative CareRectal NeoplasmsRectumChemical shift effectLymph nodeMagnetic resonance imagingNodal stagingRectal tumour

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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.