%0 Case Reports
%T A Rare Case of Retroperitoneal Tumefactive Fibroinflammatory Lesion Related to IgG4-Sclerosing Disease.
%A Nikas S
%A Zonitsa S
%A Anastasiadis P
%A Veniadou K
%A Roumelioti S
%A Mitsas AC
%A Gerasopoulos G
%A Gkouvis P
%J Cureus
%V 16
%N 6
%D 2024 Jun
%M 38978945
暂无%R 10.7759/cureus.61968
%X We present a unique case of a retroperitoneal tumefactive fibroinflammatory lesion related to IgG4-sclerosing disease; it is a rare manifestation of the IgG4-related disease, which usually causes diffuse fibrosis when located in the retroperitoneum, rather than mass-like lesions. A 49-year-old man presented to the emergency department complaining of abdominal pain and vomiting. Subsequent testing with abdominal ultrasound, CT, and MRI revealed a large retroperitoneal mass of unknown origin, heterogenous, with a concentric circles pattern best visualized in MRI. The lesion was resected, and the histological and immunohistochemical studies revealed an IgG4-related tumefactive fibroinflammatory lesion of the retroperitoneum.