Immunoglobulin G4-related disease in the sigmoid colon in patient with severe colonic fibrosis and obstruction: A case report

Figure 8 Operation images from laparoscopy. A: Explore its relationship to surrounding tissue: Dense adhesion of the sigmoid colon to the bladder was observed during the laparoscopic surgery, and it was tough to separate the adhesion; the mass was on the sigmoid colon wall between the bladder and colon; B and C: View the location of the lesion from different angles.