1. Aphthous ulcers in Crohn disease
Aphthous ulcers in Crohn disease. Aphthous ulcers are the earliest characteristic lesion of Crohn disease. These minute ulcers range in size from barely visible to 3 mm, usually surrounded by a halo of erythema. These superficial ulcers are in the descending colon. (Used, with permission, from Michelle Nazareth, MD.)
Source: Gastrointestinal Disorders, Current Medical Diagnosis & Treatment 2017
Citation: Papadakis MA, McPhee SJ, Rabow MW. Current Medical Diagnosis & Treatment 2017; 2016 Available at: Accessed: October 11, 2017
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