Clinical significance of IgG4 in sinonasal and skull base inflammatory pseudotumor.
Gwanghui RyuHyun-Jin ChoKyung Eun LeeJung Joo LeeSang Duk HongHyo Yeol KimSeung-Kyu ChungHun-Jong DhongPublished in: European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery (2019)
IgG4-positive and IgG4-negative IPT patients revealed no differences in involvement sites, clinical course, and steroid responses. However, IgG4/IgG ratio and IgG4 + plasma cell count can provide a diagnostic clue for infiltrative skull base lesions such as IPT and a differential diagnosis of SBO.