Evidence map›Paper›PMID 42426329›Full record

ArticleLangenbeck's archives of surgery2026

Classifying the structural heterogeneity of peritoneal adhesions by histopathological extracellular matrix characteristics.

Marcella Steffani, Jara Tigges, Zoé Clees, Katharina Garhammer, Philipp-Alexander Neumann, Dirk Wilhelm, Marc Martignoni, Norbert Hüser, Rebekka Dimpel, Daniel Reim and 4 more

Abstract read
In one paragraph

Article in Langenbeck's archives of 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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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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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

14 authors.

Marcella SteffaniDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Jara TiggesDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Zoé CleesDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Katharina GarhammerDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Philipp-Alexander NeumannDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Dirk WilhelmDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Marc MartignoniDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Norbert HüserDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Rebekka DimpelDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Daniel ReimDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Marcus FeithDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Bianca GrosserInstitute of Pathology, TUM School of Medicine and Health, Technical University of Munich, Munich, Germany.
Helmut FriessDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany.
Marie-Christin WeberDepartment of Surgery, TUM School of Medicine and Health, TUM University Hospital ,Technical University of Munich, Munich, Germany. marie-christin.weber@tum.de.ORCID https://orcid.org/0000-0002-3188-2160

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPeritoneal adhesions are a common complication following abdominal surgery and contribute substantially to long-termmorbidity, including bowel obstruction, chronic pain, and infertility. Their diverse clinical presentation, ranging from thin strands todense obstructive bands, suggests multiple underlying pathomechanisms. We propose a histopathological framework for classifyingperitoneal adhesions based on extracellular matrix characteristics, providing a microscopic correlation to clinical heterogeneity andsupporting translational research on adhesion prevention.

methodsIn this study, adhesions from 77 patients were examined histologically. Masson's Trichrome staining was used to visualize the extracellular matrix, enabling classification into five clusters based on qualitative histological analysis: stringy, dense, loose, fatty, and mixed.

resultsThe "stringy" and "dense" clusters exhibited the highest extracellular matrix fraction and vessel area, whereas the"loose" and "fatty" clusters displayed lower ECM density and vascularity. Immunohistochemical staining for αSMA (myofibroblasts) and PGP9.5 (nerve fibers) further revealed cluster-specific differences in myofibroblast presence and innervation. Cluster distribution was significantly associated with clinical parameters, including adhesion load and prior peritonitis.

conclusionsThis is the first study to systematically categorize peritoneal adhesions byextracellular matrix characteristics, identifying five distinct histopathological phenotypes. Our findings highlight the structural andcellular diversity of adhesions, offering new insights with potential implications for understanding adhesion pathophysiology andguiding future therapeutic strategies. Validation in larger cohorts will be essential to confirm this framework and establish its clinicalutility.

Indexed as

Extracellular MatrixPeritoneal DiseasesPeritoneumPostoperative ComplicationsAdultAgedFemaleHumansImmunohistochemistryMaleMiddle AgedTissue AdhesionsAdhesionsBowel obstructionGeneral surgeryPeritoneal adhesions

Identifiers

PMID42426329
PMCPMC13354687

What Socratic holds

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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.