Endoscopic evaluation of immunotherapy-induced gastrointestinal toxicity

Figure 1 Mucosa at the rectosigmoid junction with mild erythematous spots and no erosions or ulcers.

Figure 2 Mucosa at the rectosigmoid junction with erythema and fibrin-covered superficial erosions.

Figure 3 Mucosa in the descending colon with extensive erythema and deep fibrin-covered ulcers.

Figure 4 Erosion on the mucosa of the gastric antrum with generalized erythema.

Figure 5 Petechiae on the mucosa of the gastric fold.