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Distinction between upper and lower gastrointestinal perforation: usefulness of the periportal free air sign on computed tomography

  • H.S. Cho
    Affiliations
    (K-H. Y: Department of Radiology, Wonkwang University School of Medicine, 344-2 Sinyong-dong, Jeonbuk 570-711, South Korea). Eur J Radiol 2009;69:108–113.
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  • S.E. Yoon
    Affiliations
    (K-H. Y: Department of Radiology, Wonkwang University School of Medicine, 344-2 Sinyong-dong, Jeonbuk 570-711, South Korea). Eur J Radiol 2009;69:108–113.
    Search for articles by this author
  • S.H. Park
    Affiliations
    (K-H. Y: Department of Radiology, Wonkwang University School of Medicine, 344-2 Sinyong-dong, Jeonbuk 570-711, South Korea). Eur J Radiol 2009;69:108–113.
    Search for articles by this author
  • H. Kim
    Affiliations
    (K-H. Y: Department of Radiology, Wonkwang University School of Medicine, 344-2 Sinyong-dong, Jeonbuk 570-711, South Korea). Eur J Radiol 2009;69:108–113.
    Search for articles by this author
  • Y.-H. Lee
    Affiliations
    (K-H. Y: Department of Radiology, Wonkwang University School of Medicine, 344-2 Sinyong-dong, Jeonbuk 570-711, South Korea). Eur J Radiol 2009;69:108–113.
    Search for articles by this author
  • K.-H. Yoon
    Affiliations
    (K-H. Y: Department of Radiology, Wonkwang University School of Medicine, 344-2 Sinyong-dong, Jeonbuk 570-711, South Korea). Eur J Radiol 2009;69:108–113.
    Search for articles by this author
      To evaluate the usefulness of the periportal free air (PPFA) sign on computed tomography (CT) to distinguish upper from lower gastrointestinal (GI) tract perforation.
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