Microscopic enteritis: Bucharest consensus.

Area of Science:

• Gastroenterology and Digestive Pathology
• Histopathology
• Clinical Medicine

Background:

• Microscopic enteritis (ME) presents with gastrointestinal symptoms and nutrient deficiencies, characterized by subtle small bowel abnormalities not visible via standard endoscopy.
• Current understanding often misclassifies ME as functional or non-specific enteropathy, necessitating better characterization of its microscopic and sub-microscopic features.
• An international working party of pathologists and gastroenterologists convened to establish a consensus on ME's etiology, diagnosis, and management.

Framework:

• A consensus statement was developed using a five-step agreement scale to evaluate 21 independent statements regarding ME.
• Expert opinions were gathered on histology, diagnosis, clinical presentation, pathogenesis, and management of microscopic enteritis.

Implementation:

• Strong agreement (95%-100%) was achieved on the histological definition of ME.
• High agreement (85%-100%) was observed for diagnostic criteria.
• Variable agreement (60%-100%) on management highlights the need for further investigation.

Implications:

• This consensus provides a foundation for recognizing ME as a distinct clinical entity.
• Strong agreement on histology and diagnosis supports improved identification of affected patients.
• The need for further research into ME management is emphasized, aiming for evidence-based clinical guidelines.