Magnetic resonance imaging showing ileitis in a patient with Crohn disease
Magnetic resonance imaging showing ileitis in a patient with Crohn disease
Abdominal magnetic resonance enterography (MRE) in a patient with Crohn disease, demonstrating thickening of the terminal ileum (arrow), as well as the ascending colon. There is also a positive "comb sign" (engorgement of the vasa recta to the ileum), indicated by the dashed arrow.
Courtesy of Dr. Jeanette Perez-Rossello, Department of Radiology, Boston Children's Hospital.