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Small bowel neoplasms: enhancement patterns and differentiation using post-contrast multiphasic multidetector CT

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Abstract

Purpose

The purpose of the present study was to analyze the enhancement patterns of small bowel neoplasms on post-contrast multiphasic multidetector CT and to assess the diagnostic capacity for differentiating five tumor types.

Methods

We performed a retrospective study of data on 92 small bowel neoplasms. The neoplasms were categorized into five groups according to pathology findings, not imaging findings (23 adenocarcinomas; 22 lymphomas; 19 metastases; 18 gastrointestinal stromal tumors [GIST]; 10 neuroendocrine tumors [NET]).

Results

GIST and NET demonstrated a hypervascular pattern in the multiphasic dynamic study. Adenocarcinoma and lymphoma showed a delayed enhancement pattern. Metastasis was classified as an intermediate enhancement pattern. The receiver operating characteristic analyses revealed that attenuation thresholds could be set with acceptable accuracies for most of the small bowel neoplasms.

Conclusions

Multiphasic dynamic studies may have the potential to improve the diagnostic capacity of multidetector CT for small bowel neoplasms.

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Acknowledgments

We would like to thank Editage (www.editage.jp) for English language editing.

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Authors and Affiliations

  1. Department of Radiology, Okayama University Hospital, 2-5-1 Shikatacho, Kitaku, Okayama, 700-8558, Japan

    Takayoshi Shinya, Ryota Inai, Takashi Tanaka, Noriaki Akagi, Shuhei Sato & Susumu Kanazawa

  2. Department of Pathology, Okayama University Hospital, 2-5-1 Shikatacho, Kitaku, Okayama, 700-8558, Japan

    Tadashi Yoshino

Authors
  1. Takayoshi Shinya
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  2. Ryota Inai
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  3. Takashi Tanaka
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  4. Noriaki Akagi
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  5. Shuhei Sato
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  6. Tadashi Yoshino
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  7. Susumu Kanazawa
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Corresponding author

Correspondence to Takayoshi Shinya.

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Funding

No funding was received for this study.

Conflict of Interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional Review Board and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.

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Shinya, T., Inai, R., Tanaka, T. et al. Small bowel neoplasms: enhancement patterns and differentiation using post-contrast multiphasic multidetector CT. Abdom Radiol 42, 794–801 (2017). https://doi.org/10.1007/s00261-016-0945-y

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  • DOI: https://doi.org/10.1007/s00261-016-0945-y

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