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Inflammatory fibroid polyps of the gastrointestinal tract: a 14-year CT study at a single institution

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Abstract

Purpose

To investigate the computed tomography (CT) features of pathology-proven inflammatory fibroid polyps (IFPs) in the gastrointestinal tract.

Methods

This retrospective series study included 27 patients with pathology-proven IFPs in the stomach (n = 16), small (n = 9), and large (n = 2) intestine, who underwent contrast-enhanced CT. Two radiologists reviewed the CT images of the patients to determine in consensus the long diameter, shape, margin, contour, and growth pattern of the lesions, the presence of an ulcer and overlying mucosal hyperenhancement, the lesion enhancement patterns including the homogeneity and the degree of contrast enhancement, and the presence of intussusception and obstruction. The CT results and clinical data of the gastric and intestinal lesions were compared.

Results

The IFPs typically manifested as well-defined (89%), round or ovoid (81%), slightly lobulated-contoured (70%) masses with a purely endoluminal growth pattern (96%) and an overlying mucosal hyperenhancement (67%). Lesion homogeneity and the degree of contrast enhancement varied. The intestinal IFPs were significantly larger (3.5 vs. 2 cm), more symptomatic (82% vs. 19%), and more frequently associated with intussusception (73% vs. 0%) and obstruction (46% vs. 6%) than the gastric lesions (p ≤ 0.027).

Conclusions

The characteristic CT features of IFPs were well-defined, round or ovoid, lobulated-contoured, and endoluminal masses with overlying mucosal hyperenhancement and various enhancement patterns. IFP should be included in the differential diagnosis of patients with a soft-tissue mass in the gastrointestinal tract, especially if a large endoluminal mass in the small intestine is accompanied by intussusception.

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Authors and Affiliations

  1. Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro, 43-gil, Songpa-Gu, Seoul, 138-736, Korea

    Ga Jin Han, Jin Hee Kim, Seung Soo Lee, Seong Ho Park, Jong Seok Lee & Hyun Kwon Ha

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  1. Ga Jin Han
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  2. Jin Hee Kim
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  3. Seung Soo Lee
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  4. Seong Ho Park
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  5. Jong Seok Lee
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  6. Hyun Kwon Ha
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Correspondence to Jin Hee Kim.

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Han, G.J., Kim, J.H., Lee, S.S. et al. Inflammatory fibroid polyps of the gastrointestinal tract: a 14-year CT study at a single institution. Abdom Imaging 40, 2159–2166 (2015). https://doi.org/10.1007/s00261-015-0431-y

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  • DOI: https://doi.org/10.1007/s00261-015-0431-y

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