Crohn's disease on ultrasound

B-mode ultrasound image of a patient with ileocecal Crohn's disease showing bowel wall thickening of the cecum with transmural inflammatory reaction. Bowel wall thickening (6 mm) of the hypoechoic mucosa (M), echorich submucosa (SM) and echopoor muscularis propria (Musc) is indicated. The lumen is not seen due to mucosal swelling.