Figure 2From: Initial diagnosis of Wegener’s granulomatosis mimicking severe ulcerative colitis: a case report Histological aspect of one ulcer of the colonic mucosa. Ulceration is restricted to the mucosa and partially to the submucosa. No alteration of the architecture of the colonic crypts or granuloma formation was found. MM: muscularis mucosa; MP: muscularis propria; MU: mucosa, SM: submucosa.Back to article page