Enterocutaneous Fistula: A Simplified Clinical Approach

Area of Science:

• Gastroenterology and Surgery
• Medical Diagnostics

Background:

• A fistula is an abnormal connection between two epithelial surfaces, often resulting from loss of wall integrity.
• Common causes of small bowel fistulae include surgical intervention, foreign bodies, Crohn's disease, malignancy, radiation, and infection.
• Histopathological analysis reveals inflammation, while patient evaluation requires thorough history, physical examination, and laboratory workup.

Purpose of the Study:

• To provide a comprehensive overview of small bowel fistulae, including their causes, diagnosis, and management.
• To emphasize the importance of a multidisciplinary approach in managing this complex clinical condition.

Main Methods:

• Review of common causes, diagnostic modalities, and management strategies for small bowel fistulae.
• Initial laboratory workup includes complete blood count, comprehensive metabolic panel, and lactate levels.
• Radiologic imaging, particularly computed tomography (CT) with contrast, and magnetic resonance imaging (MRI) are crucial for diagnosis and anatomical delineation. Endoscopy aids in evaluating mucosal surfaces.

Main Results:

• Small bowel fistulae present with non-specific constitutional and local symptoms, which can be severe.
• Computed tomography (CT) is the primary imaging modality for diagnosis, with contrast enhancement being beneficial.
• A non-operative approach, focusing on nutritional optimization, fistulous tract anatomy, skincare, and underlying disease management, is the generally accepted initial strategy.

Conclusions:

• Surgical intervention is the most frequent cause of small bowel fistulae in developed countries.
• A multidisciplinary team approach is essential for successful management.
• Non-operative management should be thoroughly trialed before considering operative intervention for small bowel fistulae.