An IgG4-Related Inflammatory Pseudotumor of the Greater Omentum

Cha, Dong Hyuk; Choi, Cheol Woong; Kim, San; Park, Tae Ik; Jo, Woo Sung; Kim, Hyung Wook; Kang, Dae Hwan

doi:10.3904/kjm.2013.84.3.400

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2016

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“…Multiple organs can be affected synchronously or metachronously, including the pancreas, biliary tree, liver, kidneys, salivary gland, orbit, breast, pericardium, aorta, skin, lungs, prostate, meninges, retroperitoneum, and gastrointestinal tract [ 2 ]. Recently, many cases of IgG4RD affecting organs other than the pancreas have been reported, such as IgG4-related inflammatory pseudotumors of the liver [ 4 ], lungs [ 5 ], and greater omentum [ 6 ] with or without autoimmune pancreatitis, and isolated IgG4RD seems to have been increasingly detected owing to an increased awareness of this disease entity.…”

Section: Discussionmentioning

confidence: 99%

Immunoglobulin G4-Related Inflammatory Pseudotumor Presenting as a Solitary Mass in the Stomach

et al. 2016

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Immunoglobulin G4 (IgG4)-related disease (IgG4RD) is a relatively recently recognized entity that is histopathologically characterized by an extensive infiltration of lymphocytes and IgG4-positive plasma cells with dense fibrosis. IgG4RD is now known to affect any organ system, and a few cases of gastrointestinal lesions have also been reported. However, solitary IgG4RD of the stomach is still very rare. Furthermore, as it can mimic malignant conditions, it is important to recognize this disease to avoid unnecessary surgery. Herein, we present a case of IgG4RD presenting as an isolated subepithelial mass in the stomach.

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