Korean J Med.  2013 Mar;84(3):400-404. 10.3904/kjm.2013.84.3.400.

An IgG4-Related Inflammatory Pseudotumor of the Greater Omentum

Affiliations
  • 1Department of Internal Medicine, Pusan National University School of Medicine and Medical Research Institute, Yangsan, Korea. luckyace@hanmail.net

Abstract

IgG4-related sclerosing disease is a novel clinical disease entity characterized by an elevated serum IgG4 concentration and tissue infiltration by IgG4-positive plasma cells. Although this disease is a novel entity, it is not rare and is present in a proportion of patients with a wide variety of diseases, including autoimmune pancreatitis, sclerosing cholangitis, retroperitoneal fibrosis, and inflammatory pseudotumor. Despite the effectiveness of steroid therapy, IgG4-related sclerosing disease is often misdiagnosed as a malignant tumor. Here, we report an inflammatory pseudotumor of the great omentum that was misdiagnosed as a malignant tumor and subject to surgical resection.

Keyword

Inflammatory pseudotumor; IgG4-related sclerosing disease

MeSH Terms

Cholangitis, Sclerosing
Granuloma, Plasma Cell
Humans
Immunoglobulin G
Omentum
Pancreatitis
Plasma Cells
Retroperitoneal Fibrosis
Immunoglobulin G
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