Different imaging findings of inflammatory myofibroblastic tumor of the liver

doi:10.3748/wjg.v18.i40.5821

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Oct 28, 2012 (publication date) through Apr 29, 2024

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World Journal of Gastroenterology

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1007-9327

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Gastroenterol. Oct 28, 2012; 18(40): 5821-5825
Published online Oct 28, 2012. doi: 10.3748/wjg.v18.i40.5821

Different imaging findings of inflammatory myofibroblastic tumor of the liver

Xiao-Fei Liu, Bao-Ming He, Xiao-Hui Ou-Yang, Zhi-Zhong Wang, Jia-Gui Su

Xiao-Fei Liu, Bao-Ming He, Xiao-Hui Ou-Yang, Zhi-Zhong Wang, Jia-Gui Su, Department of Nuclear Medicine, The People’s Liberation Army 309th Hospital, Beijing 100091, China

Author contributions: Liu XF and He BM designed the research; Ou-Yang XH, Wang ZZ and Su JG contributed analytical tools; Liu XF and He BM wrote the paper.

Correspondence to: Bao-Ming He, MD, Department of Nuclear Medicine, The People’s Liberation Army 309th Hospital, Beijing 100091, China. liufly301@163.com

Telephone: +86-10-51520604 Fax: +86-10-51520931

Received: May 12, 2012
Revised: August 6, 2012
Accepted: August 14, 2012
Published online: October 28, 2012

Abstract

Inflammatory myofibroblastic tumor (IMT) in the liver is an uncommon lesion of uncertain pathogenesis. In most cases, symptomatological imaging and clinical studies suggest malignancy. We report a case of liver IMT with imaging findings from positron emission tomography/computed tomography (PET/CT), contrast-enhanced computed tomography (CECT) and contrast-enhanced ultrasonography (CEUS). This report was the first to depict a PET/CT scan of a liver IMT that revealed an inhomogeneous, intense (fluorine 18)-fluoro-2-deoxy-D-glucose uptake. The CECT and CEUS images showed a hepatic artery supplying blood to the mass and necrosis. The characteristic histopathological features and the presence of spindle cells expressing smooth muscle actin, collagen fibers and lymphocytes allowed for the diagnosis of liver IMT. Recognizing such findings will help to achieve a correct diagnosis and may prevent inappropriate treatment.

Keywords: Inflammatory myofibroblastic tumor, Liver, Emission-computed tomography, X-ray-computed tomography