Ultrasound of colon diverticulitis

Area of Science:

• Gastroenterology
• Diagnostic Imaging
• Abdominal Surgery

Background:

• Diverticulitis diagnosis often involves computed tomography (CT), but ultrasound (US) is a common initial imaging modality for acute abdominal pain.
• Understanding US signs of diverticulitis is crucial, especially since US can be superior to CT in non-obese patients and for early, uncomplicated cases.

Purpose of the Study:

• To highlight the utility of ultrasound (US) in diagnosing and monitoring uncomplicated diverticulitis.
• To compare the effectiveness of US and CT in diagnosing diverticulitis and its complications.
• To describe the typical course and US findings of uncomplicated diverticulitis, including spontaneous resolution.

Main Methods:

• Analysis of daily, repeated ultrasound (US) examinations in patients diagnosed with diverticulitis.
• Observation of changes in colonic wall thickness, fecolith presence, surrounding inflamed tissue, and abscess formation.
• Comparison of US findings with computed tomography (CT) in diagnosing diverticulitis and alternative conditions.

Main Results:

• Ultrasound (US) effectively identifies early, uncomplicated diverticulitis, showing colonic wall thickening and fecoliths, often with spontaneous evacuation.
• US can track the benign, predictable course of diverticulitis, including fecolith expulsion and occasional small abscesses.
• Computed tomography (CT) remains superior for diagnosing complicated diverticulitis, free air, peritonitis, and deep abscesses, especially in obese patients.

Conclusions:

• Ultrasound (US) is a valuable tool for diagnosing and monitoring uncomplicated diverticulitis, demonstrating a favorable natural course.
• While US is useful, CT is essential for complicated diverticulitis and in obese patients.
• Accurate diagnosis, including differentiating right-sided diverticulitis, is critical to avoid unnecessary surgery.