Evidence map›Paper›PMID 42681307›Full record

ArticleMolecular imaging and biology2026

Subcutaneous Adipose Tissue FDG Uptake is Associated with Systemic Inflammatory Indices Independent of Primary-Tumor Metabolic Burden in Breast Cancer.

Mehmet Tarık Tatoğlu, İlker Nihat Ökten, Ebru İbişoğlu, Tuçe Akkurt Söylemez, Hatice Uslu, Ferda Yerdelen Tatoğlu

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Article in Molecular imaging and biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Mehmet Tarık TatoğluDepartment of Nuclear Medicine, Goztepe Prof Dr Suleyman Yalcin City Hospital: TC Saglik Bakanligi Goztepe Prof Dr Suleyman Yalcin Sehir Hastanesi, Istanbul, Turkey. tariktatoglu@gmail.com.ORCID http://orcid.org/0000-0002-1680-4973
İlker Nihat ÖktenDepartment of Medical Oncology, Goztepe Prof Dr Suleyman Yalcin City Hospital: TC Saglik Bakanligi Goztepe Prof Dr Suleyman Yalcin Sehir Hastanesi, Istanbul, Turkey.
Ebru İbişoğluDepartment of Nuclear Medicine, Goztepe Prof Dr Suleyman Yalcin City Hospital: TC Saglik Bakanligi Goztepe Prof Dr Suleyman Yalcin Sehir Hastanesi, Istanbul, Turkey.
Tuçe Akkurt SöylemezDepartment of Pathology, Goztepe Prof Dr Suleyman Yalcin City Hospital: TC Saglik Bakanligi Goztepe Prof Dr Suleyman Yalcin Sehir Hastanesi, Istanbul, Turkey.
Hatice UsluDepartment of Nuclear Medicine, Goztepe Prof Dr Suleyman Yalcin City Hospital: TC Saglik Bakanligi Goztepe Prof Dr Suleyman Yalcin Sehir Hastanesi, Istanbul, Turkey.
Ferda Yerdelen TatoğluDepartment of Econometrics, Faculty of Economics, Istanbul University, Istanbul, Turkey.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAdipose tissue may contribute to systemic inflammation in breast cancer. This study evaluated whether visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) [18F]fluorodeoxyglucose ([18F]FDG) uptakes on positron emission tomography/computed tomography (PET/CT) are associated with inflammatory indices after adjustment for PET-derived tumor metabolic burden and whether metastatic status modifies these associations. MATERIALS AND

methodsIn this retrospective single-center cohort (n = 358) undergoing baseline [18F]FDG PET/CT, metastatic status was defined using an internal three-level clinical stage grouping: early-stage or locally advanced disease was classified as M0 and metastatic disease was classified as MET. VAT and SAT FDG uptakes were quantified as z-scored mean standardized uptake values normalized to lean body mass (SULmean) using the James lean body mass equation. Inflammatory indices from complete blood counts were log-transformed. Prespecified linear regression models with heteroskedasticity-consistent type 3 (HC3) robust standard errors were adjusted for age, body mass index (BMI), fasting glucose, stage, molecular subtype, and PET-derived primary-tumor metabolic burden metrics. Effect modification was tested via exposure × MET interaction. Sensitivity analyses used total-body tumor burden metrics in MET and recalculated SUL using the Janmahasatian lean body mass equation; overall survival (OS) was explored with Cox models.

resultsOf 358 patients, 284 (79.3%) were M0 and 74 (20.7%) were MET. In M0 (complete-case n = 267), higher SAT uptake was independently associated with higher log-transformed neutrophil-to-lymphocyte ratio (log(NLR)) (β = 0.0798; 95% confidence interval (CI) 0.0130-0.1466; p = 0.019). In pooled interaction models (n = 323), SAT remained associated with log(NLR) (β = 0.0892; 95% CI 0.0196-0.1588; p = 0.012; ≈9% higher NLR per 1-standard deviation (SD)), with no evidence of effect modification by metastatic status (SAT × MET interaction p = 0.594). Results were consistent after total-body tumor-burden adjustment in MET and after recalculation of SUL using the Janmahasatian lean body mass equation. SAT was not significantly associated with OS (adjusted hazard ratio (HR) = 1.086; 95% CI 0.864-1.364; p = 0.481; n = 346).

conclusionsHigher SAT FDG uptake was modestly associated with higher NLR independent of tumor metabolic burden, with no evidence of heterogeneity by metastatic status. These findings suggest a potential tissue-specific imaging correlate of host inflammatory phenotype rather than a stand-alone clinical biomarker. Sensitivity and survival analyses remain hypothesis-generating and require external validation.

Indexed as

18F-FDGAbdominal fatBreast cancerInflammationPET-CT

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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 Socratic graph.