Evidence map›Paper›PMID 42105221›Full record

ArticleInterdisciplinary cardiovascular and thoracic surgery2026

Intraoperative Assessment of Anatomical Resection Margin Using a Novel Asymmetric Linear Stapler: An Initial Single Institution Experience.

Yooyoung Chong, Kyung-Hee Kim, Hyun Jin Cho, Calvin S H Ng, Sandeep J Khandhar, Marion Durand, Toshihiko Sato, Mingyon Mun, Min-Woong Kang

Abstract read
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Article in Interdisciplinary cardiovascular and thoracic surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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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

9 authors.

Yooyoung ChongDepartment of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea.ORCID 0000-0002-1935-2140
Kyung-Hee KimDepartment of Pathology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea.ORCID 0000-0003-0214-0296
Hyun Jin ChoDepartment of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea.ORCID 0000-0001-5833-5530
Calvin S H NgDepartment of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.ORCID 0000-0002-8074-0900
Sandeep J KhandharDivision of Thoracic Surgery, Virginia Cancer Specialists, Inova Fairfax Hospital, Fairfax, VA 22031, United States.ORCID 0009-0000-9571-6164
Marion DurandThoracic Surgery Department, Groupe Hospitalier Privé Ambroise Paré Hartmann, Neuilly-Sur-Seine 92200, France.
Toshihiko SatoDepartment of General Thoracic, Breast and Pediatric Surgery, Fukuoka University School of Medicine and Hospital, 7-45-1 Nanakuma, Jonan-Ku, Fukuoka City, Fukuoka, 814-0180, Japan.
Mingyon MunDepartment of Thoracic Surgical Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan.ORCID 0000-0002-3535-0081
Min-Woong KangDepartment of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea.ORCID 0000-0002-8492-0351

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesIntraoperative assessment of resection margins during pulmonary resection is limited by tissue compression and distortion caused by conventional staplers, which hinder direct pathological evaluation of the anatomical resection margin. We report our initial clinical experience with a novel asymmetric linear stapler (NALS) designed to provide direct access to the specimen-side anatomical resection margin for intraoperative histologic assessment.

methodsWe retrospectively reviewed patients who underwent pulmonary resection using the NALS between July 2024 and December 2025. Intraoperative frozen-section examination was performed for parenchymal and/or bronchial margins when malignancy was suspected or confirmed. Margin status, margin distance, and frozen-permanent pathological concordance were analysed descriptively.

resultsAmong 226 patients who underwent pulmonary resection using the NALS, 206 resection margins (144 parenchymal and 62 bronchial) were evaluated. Intraoperative frozen-section examination identified margin positivity in 12 margins (5.8%). Residual tumour was confirmed on permanent pathology in 4 of 8 parenchymal frozen-positive margins, whereas all bronchial frozen-positive margins showed benign or reactive changes. No false-negative frozen-section findings were identified. Among negative margins with available measurements, 66.7% of parenchymal margins and 84.5% of bronchial margins measured at least 10 mm.

conclusionsIn this initial experience, intraoperative margin assessment using the NALS was feasible and enabled structured evaluation of the anatomical resection margin during pulmonary resection. Because no control group using conventional staplers was included, these findings should be interpreted as a feasibility assessment rather than evidence of superiority over standard stapling devices. Further multicentre studies with controlled comparisons and long-term oncologic follow-up are warranted.

Indexed as

Lung NeoplasmsMargins of ExcisionPneumonectomySurgical StaplersSurgical StaplingAgedAged, 80 and overEquipment DesignFemaleFrozen SectionsHumansMaleMiddle AgedRetrospective Studieslinear staplerlung cancerpathologyresection marginsublobar resection

Identifiers

PMID42105221
PMCPMC13250331

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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.