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ArticleCardiovascular and interventional radiology2026

CT-Guided Dual-Fluorescent Marking to Localize Small Pulmonary Nodules for Robotic Sublobar Resection: Technical Note from 84 Consecutive Cases.

Públio Cesar Cavalcante Viana, Thiago Franchi Nunes, José Ragide Jamal Rimoli, Fabio José Haddad, Augusto Ishy, Ellen Caroline Toledo do Nascimento, Juliana Rocha Mol Trindade, Angelo Fernandez, Ricardo Mingarini Terra

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Article in Cardiovascular and interventional radiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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2citing papers in PubMed
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1 · What the graph read from it

What it found

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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

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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

2 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Públio Cesar Cavalcante VianaHospital Sírio-Libanês, Rua Dona Adma Jafet, 115, São Paulo, SP, 01308050, Brazil.
Thiago Franchi NunesInterventix, Rua Dr. Antônio Alves Arantes, 398, Chácara Cachoeira, Campo Grande, MS, 79040-720, Brazil. thiagofranchinunes@gmail.com.ORCID http://orcid.org/0000-0003-0006-3725
José Ragide Jamal RimoliHospital Sírio-Libanês, Rua Dona Adma Jafet, 115, São Paulo, SP, 01308050, Brazil.
Fabio José HaddadHospital Sírio-Libanês, Rua Dona Adma Jafet, 115, São Paulo, SP, 01308050, Brazil.
Augusto IshyHospital Sírio-Libanês, Rua Dona Adma Jafet, 115, São Paulo, SP, 01308050, Brazil.
Ellen Caroline Toledo do NascimentoHospital Sírio-Libanês, Rua Dona Adma Jafet, 115, São Paulo, SP, 01308050, Brazil.
Juliana Rocha Mol TrindadeHospital Sírio-Libanês, Rua Dona Adma Jafet, 115, São Paulo, SP, 01308050, Brazil.
Angelo FernandezHospital Sírio-Libanês, Rua Dona Adma Jafet, 115, São Paulo, SP, 01308050, Brazil.
Ricardo Mingarini TerraSchool of Medicine, Universidade de São Paulo (FMUSP), Av. Dr. Arnaldo, 455, São Paulo, SP, 01246903, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo describe a CT-guided dual-fluorescent marking technique (methylene blue + indocyanine green stabilized in fibrin-thrombin matrix) for intraoperative localization of non-palpable pulmonary nodules during robotic-assisted thoracic surgery (RATS) and to report feasibility and key outcomes. MATERIALS AND

methodsRetrospective, single-center series of 84 consecutive patients with solid or subsolid nodules ≤ 2 cm referred for RATS (Oct/2021-Oct/2024). Under general anesthesia, a 22-G Chiba needle was used for CT-guided percutaneous injection of a standardized solution (1 mL 1% methylene blue + 1 mL indocyanine green + 3 mL fibrin-thrombin + 1 mL iodinated contrast; typical injected volume 0.2-1.0 mL). Resection proceeded using near-infrared Firefly® imaging. OUTCOMES: intraoperative identification, complete resection, margin status, timing, and complications. Prespecified subgroup analysis compared subsolid vs. solid lesions.

resultsAll 84 nodules were localized intraoperatively and resected with negative margins; no conversion to open surgery occurred and no complications attributable to marking were recorded. Mean operative time was 163.7 ± 66.7 min; mean interval between marking and surgery was 74.6 ± 20.6 min. Patients with subsolid nodules were older (70.5 vs. 63.1 years, p = 0.003) and had larger lesions (14.7 vs. 11.4 mm, p = 0.010). During a mean clinical follow-up of 17.3 months, no local recurrences were observed.

conclusionCT-guided dual-fluorescent marking is a practical, fluoroscopy-free localization strategy that integrates smoothly with RATS workflows and enables reliable sublobar resections with negative margins in this series. The incremental contribution of methylene blue beyond ICG could not be isolated and warrants prospective evaluation. However, this study did not include a control group, such as conventional marking techniques, which should be considered when interpreting the results.

Indexed as

Lung NeoplasmsMultiple Pulmonary NodulesRadiography, InterventionalRobotic Surgical ProceduresSolitary Pulmonary NoduleTomography, X-Ray ComputedAgedContrast MediaFeasibility StudiesFemaleFluorescent DyesHumansIndocyanine GreenMaleMethylene BlueMiddle AgedContrast MediaFluorescent DyesIndocyanine GreenMethylene BlueCT-guided localizationFluorescenceIndocyanine greenInterventional radiologyLung noduleMethylene blueRobotic surgery

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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.