Microscopic Colitis: Evidence-Based Guide to Diagnosis and Management.

Area of Science:

• Gastroenterology
• Immunology
• Pathology

Background:

• Microscopic colitis (MC) is a chronic inflammatory bowel disease affecting older adults, presenting with watery diarrhea.
• Diagnosis relies on histology due to unremarkable endoscopic findings and lack of noninvasive biomarkers.
• MC subtypes include lymphocytic and collagenous colitis.

Purpose of the Study:

• To review the diagnosis and treatment of microscopic colitis.
• To discuss current and potential long-term management strategies for MC.
• To highlight the challenges posed by high relapse rates.

Main Methods:

• Literature review of microscopic colitis diagnosis and treatment.
• Analysis of current therapeutic guidelines and emerging strategies.
• Synthesis of information on budesonide efficacy and maintenance options.

Main Results:

• Budesonide (9 mg/day for 6-8 weeks) is the effective first-line therapy for inducing remission in MC.
• High relapse rates are observed after initial budesonide treatment.
• Long-term strategies include low-dose budesonide, bile salt binders, antidiarrheals, and advanced therapies for refractory cases.

Conclusions:

• Effective induction therapy exists for MC, but sustained remission remains a challenge.
• Further research into long-term maintenance and advanced therapies is crucial for managing recurrent MC.
• Optimizing treatment strategies is essential for improving patient outcomes in microscopic colitis.