Evidence map›Paper›PMID 40995537›Full record

ReviewCancer management and research2025

Peritoneal Metastasis in Non-Small Cell Lung Cancer: A Systematic Review of Clinical Features, Molecular Profiles, Diagnostic Approaches, and Outcomes.

Ryuichi Ohta, Yoshinori Ryu, Kaoru Tanaka, Chiaki Sano, Hidetoshi Hayashi

Abstract readReview
In one paragraph

Review in Cancer management and research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
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

5 authors.

Ryuichi OhtaDepartment of Community Care, Unnan City Hospital, Unnan City, Shimane, Japan.ORCID 0000-0003-2593-091X
Yoshinori RyuDepartment of Community Care, Unnan City Hospital, Unnan City, Shimane, Japan.
Kaoru TanakaDepartment of Medical Oncology, Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan.ORCID 0000-0002-4927-1368
Chiaki SanoCommunity Medicine Management, Shimane University Faculty of Medicine, Izumo City, Shimane, Japan.
Hidetoshi HayashiDepartment of Medical Oncology, Kindai University Faculty of Medicine, Osaka-Sayama City, Osaka, Japan.ORCID 0000-0001-8787-5587

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Peritoneal metastasis is an uncommon but clinically significant manifestation of non-small cell lung cancer (NSCLC). While traditionally associated with gastrointestinal or ovarian malignancies, emerging reports suggest that NSCLC, particularly adenocarcinoma with driver mutations, can also exhibit peritoneal dissemination. This systematic review aims to synthesize current evidence on the clinical characteristics, diagnostic modalities, molecular profiles, treatment strategies, and outcomes of NSCLC patients with peritoneal metastasis. Methods: A systematic literature search was conducted in PubMed, Embase, and Web of Science from inception through April 2025. Studies were eligible if they reported peritoneal metastasis in histologically confirmed NSCLC patients. Data on histopathology, molecular alterations, diagnosis, treatment, and survival were extracted. The review was conducted in accordance with PRISMA 2020 guidelines. Results: Twenty-seven studies met inclusion criteria, comprising 19 case-based reports and seven retrospective cohort studies. Adenocarcinoma was the predominant histologic type (93%), and EGFR mutations were the most frequently reported molecular alteration. Diagnosis was primarily established via ascitic cytology, imaging, or intraoperative findings. Targeted therapy (eg, EGFR- or BRAF-directed TKIs) yielded temporary disease control in selected cases. However, median overall survival after peritoneal metastasis ranged from 2.0 to 5.2 months. Prognostic factors included poor performance status, absence of actionable mutations, and concurrent pleural metastasis. Conclusion: Peritoneal metastasis in NSCLC is rare but associated with poor prognosis. Molecular-guided therapies offer transient benefit, underscoring the need for early recognition and individualized treatment approaches. Prospective studies are warranted to better define predictors and optimal management strategies for this atypical metastatic pattern.

Indexed as

molecular diagnostic techniquesneoplasm metastasisnon-small cell lung cancerperitoneal neoplasmsprognosistargeted therapy

Identifiers

PMID40995537
PMCPMC12456747

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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.