Optimal Use of Computed Tomography in Diagnosing Internal Herniation After Roux-en-Y Gastric Bypass: A Proposition for the Application of a Radiological Prediction Score

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Internal herniation is a common cause of abdominal pain after Roux-en-Y gastric bypass, with incidences ranging from 1 to 12%.
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Diagnostic laparoscopy, the gold standard for diagnosing internal herniation, fails to confirm the condition in 28–53% of cases.
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Abdominal CT-scanning is a noninvasive tool, but free text reporting leads to significant false positive and negative rates.
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Structured assessment of CT-scans can improve diagnostic accuracy for internal herniation, but interobserver agreement varies.
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This study aims to develop a reproducible prediction score for internal herniation based on structured CT-sign assessments.

Obesity Surgery

by Lilian L. van Hogezand, Lucas Goense, Erik J.R.J. van der Hoeven, Charlotte J. Tutein Nolthenius, Niek van Oorschot, Luigi A.M.J.G. van Riel, Marinus J. Wiezer, Niels A.T. Wijffels, Marijn Takkenberg, Wouter W. Te Riele, Lea M. Dijksman, Hjalmar C. van Santvoort, Wouter J.M. Derksen
October 18, 2025

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