Case Report
Copyright ©2006 Baishideng Publishing Group Co.
World J Gastroenterol. May 14, 2006; 12(18): 2955-2957
Published online May 14, 2006. doi: 10.3748/wjg.v12.i18.2955
Figure 5
Figure 5 IgG4 immunostaining showing abundant infiltration of IgG4-positive plasma cells in tissue specimens of resected retroperitoneal mass (A) and biopsied major duodenal papilla (B).