Small intestinal adenocarcinoma complicating regional enteritis

Area of Science:

• Gastroenterology
• Oncology
• Surgical Pathology

Background:

• Crohn's disease (CD) is a chronic inflammatory bowel disease.
• Adenocarcinoma of the small intestine is rare.
• The association between CD and small intestinal adenocarcinoma is increasingly recognized.

Observation:

• Three new cases of small intestinal adenocarcinoma complicating Crohn's disease are presented.
• A review of 75 previously reported cases was conducted.
• Comparative analysis with de novo small bowel adenocarcinoma was performed.

Findings:

• Small intestinal adenocarcinoma in CD patients occurs at a younger age compared to de novo cases.
• Malignancies in CD patients are more frequently located in the distal small bowel.
• A male predilection is observed in CD-associated small intestinal adenocarcinoma.
• Prognosis for small intestinal adenocarcinoma complicating CD is generally worse than for de novo cases.

Implications:

• The rising incidence suggests that chronic inflammation in Crohn's disease may predispose to adenocarcinoma.
• Earlier diagnosis of small intestinal adenocarcinoma in Crohn's disease patients is crucial for improving patient outcomes.
• Enhanced surveillance strategies for small intestinal malignancies in individuals with Crohn's disease may be warranted.