Perianal disease in patients with ulcerative colitis: A case-control study

Area of Science:

• Gastroenterology
• Inflammatory Bowel Disease Research
• Clinical Outcomes

Background:

• Ulcerative colitis (UC) patients can present with concomitant perianal disease (PAD), but its impact on UC outcomes is understudied.
• Understanding the prevalence and clinical significance of PAD in UC is crucial for comprehensive patient management.

Purpose of the Study:

• To determine the prevalence, clinical characteristics, and outcomes of perianal disease in patients with ulcerative colitis.
• To compare UC patients with and without PAD regarding disease progression and treatment needs.

Main Methods:

• A matched-cohort study identified UC patients who developed PAD from three Inflammatory Bowel Disease (IBD) hospital databases.
• Cases of UC with PAD were matched by age, initial disease extent, and diagnosis year with two UC patients without PAD.

Main Results:

• Perianal disease (PAD) was observed in 5% of ulcerative colitis (UC) patients, more common in men and those with distal or extensive UC.
• Complex PAD occurred in about half of UC-PAD patients, leading to diagnostic changes in one-third, primarily due to transmural involvement or small intestinal disease.
• UC patients with PAD showed no increased rates of proximal disease spread or colectomy but required more steroid therapy compared to controls.

Conclusions:

• Perianal disease affects up to 5% of ulcerative colitis patients, with complex cases potentially altering the diagnosis.
• While overall UC treatment requirements are not elevated, steroid use is greater in UC patients with PAD.