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

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

Research output: Contribution to journalArticle

11 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)794-801
Number of pages8
JournalAbdominal Radiology
Volume42
Issue number3
DOIs
Publication statusPublished - Mar 1 2017

Keywords

  • Attenuation value
  • Differential diagnosis
  • Enhancement pattern
  • Multiphasic computed tomography
  • Small bowel neoplasm

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Gastroenterology
  • Urology

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