What is Diverticulosis? Diverticulosis is a common condition of the colon, characterized by the formation of small sac-like protrusions of the bowel wall, known as diverticula. In most cases, diverticulosis is asymptomatic and is often diagnosed incidentally during colonoscopy or imaging studies performed for other reasons. Diagnosis of Diverticulosis The diagnosis of diverticulosis is based on examinations such as colonoscopy or abdominal computed tomography (CT), which allo