{
  "abstract": "Pneumomediastinum typically results from trauma, iatrogenic injury, or an acute rise in intrathoracic pressure, as occurs with forceful coughing or vomiting. Here, we report an adolescent male patient with a congenital lesser omental defect, which led to small bowel herniation into the lesser sac. The incarcerated intestinal loop compressed the pylorus, resulting in gastric outlet obstruction, intractable vomiting, and subsequent pneumomediastinum. This case illustrates lesser sac herniation leading to vomiting-induced pneumomediastinum via the “Macklin effect”.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Surgery, The Third Central Hospital of Tianjin, Tianjin, China",
    "Tianjin Institute of Hepatobiliary Disease, Tianjin, China"
  ],
  "article_type": "case report",
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Jianlei Yang"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Zili Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9dtqfd84k5gw5.bib",
  "cited_by": 0,
  "doi": "10.3389/fsurg.2026.1900310",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13710017/",
  "id": "9dtqfd84k5gw5",
  "issns": [
    "2296-875X"
  ],
  "landing_url": "https://doi.org/10.3389/fsurg.2026.1900310",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Case Report"
    ],
    [
      "openalex",
      "2740|Pneumothorax, Barotrauma, Emphysema"
    ]
  ],
  "openalex": "W7221615583",
  "pdf_url": "https://www.frontiersin.org/journals/surgery/articles/10.3389/fsurg.2026.1900310/pdf",
  "pmcid": "PMC13710017",
  "pmid": "42947703",
  "published": "2026-10-13",
  "publisher": "Frontiers Media SA",
  "ris": "https://research.draconitic.com/paper/9dtqfd84k5gw5.ris",
  "sources": [
    {
      "first_seen": "2026-10-31T12:21:04Z",
      "native_id": "PMC13710017",
      "source": "pmc",
      "url": "https://doi.org/10.3389/fsurg.2026.1900310"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "journal-openalex:2746|Spinal Fractures and Fixation Techniques",
      "subfield": "surgery"
    }
  ],
  "title": "Case Report: A rare case of spontaneous lesser omental sac hernia with pneumomediastinum",
  "title_text": "Case Report: A rare case of spontaneous lesser omental sac hernia with pneumomediastinum",
  "type": "peer-reviewed",
  "updated_at": "2026-10-31T12:21:04Z",
  "url": "https://research.draconitic.com/paper/9dtqfd84k5gw5",
  "venue": "Frontiers in Surgery",
  "versions": []
}