Diverticulitis Staging and Management

Classification Systems

The World Society of Emergency Surgery recommends the WSES CT-guided classification for guiding contemporary management decisions in acute diverticulitis, which divides the condition into uncomplicated and complicated categories based on CT findings 1, 2, 3
The Modified Hinchey classification is a traditional and widely used system that categorizes diverticulitis into stages 0-4, with stage 0 being mild clinical diverticulitis and stage 4 being fecal peritonitis 1, 2, 3
The Sallinen classification incorporates clinical, radiologic, and physiologic parameters, including organ dysfunction, and demonstrates superior predictive ability for mortality and need for surgery 1, 2, 3

The World Journal of Emergency Surgery suggests that CT imaging is essential for accurate staging and should not be omitted, as clinical examination alone is insufficient for diagnosis and classification 1, 2, 3
The American College of Surgeons recommends non-operative management with bowel rest and antibiotics for small abscesses (< 4 cm, Hinchey 1b), percutaneous drainage for larger abscesses (> 4 cm, Hinchey 2), and surgical intervention for generalized peritonitis (Hinchey 3-4) 4, 5, 6

For small abscesses (< 4 cm, Hinchey 1b), non-operative management with bowel rest and antibiotics is recommended 4, 5
For larger abscesses (> 4 cm, Hinchey 2), percutaneous drainage is indicated 4, 5
For abscesses ≥ 3-4 cm, percutaneous drainage is recommended 6