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IgG4-Related Hepatic Inflammatory Pseudotumor Complicated by Actinomycosis during Steroid Therapy

Other Titles
 스테로이드 치료 중 방선균증이 합병된 간의 IgG4 연관 염증성 거짓종양 
 Jae Won Chung  ;  Yoon Sung Bae  ;  Jin Hong Lim  ;  Dong Ki Lee  ;  Jeong-Sik Yu 
 Journal of the Korean Society of Radiology, Vol.80(2) : 351-358, 2019 
Journal Title
Journal of the Korean Society of Radiology(대한영상의학회지)
Issue Date
Liver ; Inflammatory Pseudotumor ; IgG4-Related Disease ; Actinomycosis ; Prednisolone
For a 67-year-old man with diabetes mellitus, a 9-cm liver mass was found on CT during the diagnostic work-up for weight loss and fever. Dynamic CT and MRI showed a layered pattern of contrast enhancement suggesting the imaging features of the solid inflammatory mass. After tissue diagnosis of immunoglobulin G4 (IgG4)-related disease by gun needle biopsy, steroid therapy induced partial shrinkage of the mass on the follow-up CT at 4 weeks. On the 5-month follow-up CT with the maintenance of low-dose oral steroid medication, disease progression with invasion to diaphragm brought surgical intervention of right hemihepatectomy considering the possibility of combined malignancy. In the area of diaphragmatic destruction, focal actinomycosis was complicated in the main mass of IgG4-related disease. We are the first to describe a rare case of IgG4-related inflammatory pseudotumor, complicated by actinomycosis, showing an invasive nature that mimicked malignancy during steroid therapy in a diabetic patient.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
Yonsei Authors
Bae, Yoon Sung(배윤성)
Yu, Jeong Sik(유정식) ORCID logo https://orcid.org/0000-0002-8171-5838
Lee, Dong Ki(이동기) ORCID logo https://orcid.org/0000-0002-0048-9112
Lim, Jin Hong(임진홍)
Chung, Jae Won(정재원)
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