Evidence map›Paper›PMID 41021199›Full record

ArticleDiscover oncology2025

Effect of body mass index on postoperative lymphedema after breast cancer: a systematic review and meta-analysis.

Weiwei Zhang, Zhilin Liu, Jinming Li, Hengheng Zhang, Meijie Wu, Ping Yang, Tao Wu, Guoshuang Shen, Fuxing Zhao, Zhen Liu

Abstract read
In one paragraph

Article in Discover oncology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. Association Between Danish Guideline Treatments for Breast Cancer and Physiotherapy-Relevant Late Effects: A Nationwide Cohort Study.Physiotherapy research international : the journal for researchers and clinicians in physical therapy · 2026
    Article
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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.

Weiwei Zhang *Qinghai University, Xining, Qinghai, China.
Zhilin Liu *Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, Qinghai Province, People's Republic of China.
Jinming Li *Qinghai University, Xining, Qinghai, China.
Hengheng ZhangQinghai University, Xining, Qinghai, China.
Meijie WuQinghai University, Xining, Qinghai, China.
Ping YangQinghai University, Xining, Qinghai, China.
Tao WuQinghai University, Xining, Qinghai, China.
Guoshuang ShenBreast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, Qinghai Province, People's Republic of China.
Fuxing ZhaoBreast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, Qinghai Province, People's Republic of China. 18797349621@163.com.
Zhen LiuBreast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, 810000, Qinghai Province, People's Republic of China. qhdxlz@163.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundUpper extremity lymphedema, a major complication post-breast cancer surgery, severely impacts quality of life. While body mass index (BMI) is suggested as a risk factor for postoperative breast cancer-related lymphedema (BCRL), evidence is inconsistent. This meta-analysis systematically evaluates BMI's impact on postoperative lymphedema to resolve discrepancies and provide accurate insights.

methodsThe authors conducted comprehensive literature searches from inception to October 7, 2024, in major English-language databases, including PubMed, Embase, and Cochrane. To assess the association between BMI and postoperative BCRL, odds ratio (OR) with 95% confidence intervals (95% CI) were calculated. Subgroup analyses were also performed to evaluate the impact of BMI on postoperative lymphedema in breast cancer patients across different geographic regions.

resultsThis meta-analysis included 16 studies involving 6,057 postoperative breast cancer patients, with sample sizes ranging from 101 to 1,130. The results revealed a significant association between elevated BMI and postoperative BCRL, with an OR of 2.05 (95% CI, 1.53-2.75; P < 0.005) for patients with BMI ≥ 25 kg/m² compared to those with BMI < 25 kg/m². These findings underscore a significant positive correlation between higher BMI and an increased risk of postoperative lymphedema in breast cancer patients.

conclusionsOur findings demonstrate that a BMI ≥ 25 kg/m² is a significant risk factor for postoperative lymphedema in breast cancer patients. A comprehensive understanding of BMI's role in lymphedema development post-surgery can inform clinicians and therapists in designing personalized strategies to mitigate this complication.

Indexed as

Body mass indexBreast cancerLymphedemaMeta-analysisPostoperative complications

Identifiers

PMID41021199
PMCPMC12480183

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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.