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Intrathoracic stomach: when does it obstruct?

D E Gerson, A M Lewicki

    Radiology
    |May 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Large hiatal hernias can cause gastric obstruction. The most common cause is the stomach fundus descending below the diaphragm, leading to blockage. Other factors can also contribute to this serious condition.

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    Area of Science:

    • Gastroenterology
    • Thoracic Surgery
    • Medical Imaging

    Background:

    • Large hiatal hernias, including paraesophageal types, can lead to significant gastrointestinal complications.
    • Gastric obstruction and strangulation are potential, though infrequent, outcomes of intrathoracic gastric herniation.

    Purpose of the Study:

    • To present cases of intrathoracic gastric herniation and analyze the mechanisms of gastric obstruction.
    • To evaluate the frequency and contributing factors of gastric obstruction in hiatal hernias.

    Main Methods:

    • Review of seven cases of intrathoracic gastric herniation with varying degrees of severity.
    • Anatomical diagrams illustrating the herniation in each case.
    • Analysis of obstruction mechanisms in two specific cases.

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    Main Results:

    • Seven cases of gastric intrathoracic herniation were documented, with two presenting with gastric obstruction.
    • Obstruction mechanisms considered included hernial ring tightness, gastric volvulus, and fundic redescent.
    • Fundic redescent with distension and crowding of the hernial orifice was identified as the most frequent cause of obstruction.

    Conclusions:

    • Subdiaphragmatic redescent of the gastric fundus is the primary mechanism causing obstruction in intrathoracic gastric herniations.
    • Combined mechanisms can also contribute to gastric obstruction in complex cases.
    • Understanding these mechanisms is crucial for managing gastric herniation complications.