[Diffuse ulcerative lesions in the colon with intestinal Behçet's disease]

Area of Science:

• Gastroenterology
• Immunology
• Internal Medicine

Background:

• Intestinal Behçet's disease (IBD) commonly affects the ileocecal region with characteristic deep ulcerations.
• Distinguishing IBD from other gastrointestinal disorders can be challenging due to overlapping symptoms.

Observation:

• A colonofiberscopy study of 41 intestinal Behçet's disease patients revealed diffuse ulcerative lesions in the transverse and distal colon in 10% of cases.
• These diffuse colonic lesions presented morphological similarities to ulcerative colitis and Crohn's disease.
• Clinical symptoms of Behçet's disease, including oral aphthae and joint pain, preceded the colonic ulcerations in all observed cases.

Findings:

• Wide-spreading ulcerative lesions in the colon associated with Behçet's disease are rare, particularly in Japanese populations.
• The observed diffuse colonic lesions in Behçet's disease patients mimicked inflammatory bowel disease presentations.
• Four cases presented atypical, diffuse colonic involvement, distinct from the typical ileocecal localization.

Implications:

• The findings suggest that intestinal Behçet's disease can manifest with atypical, diffuse colonic ulcerations, challenging differential diagnoses with inflammatory bowel disease.
• Recognizing these rare presentations is crucial for accurate diagnosis and management of intestinal Behçet's disease.
• Further research is warranted to understand the spectrum of colonic involvement in Behçet's disease.