A 63-year-old man with diabetes mellitus, hypertension, nd hyperlipidemia, who had been followed up regularly for 9 years, visited our hospital for positive findings on fecal mmunochemical screening test. Although he had no abdominal ymptoms, computed tomographic colonography (CTC) was perormed for colorectal cancer screening. Colorectal neoplasms were ot detected. The CTC showed diverticula in the sigmoid, desending, transverse, and ascending colon as well as in the cecum Fig. 1a). In addition, five diverticula of 4–6 mm diameter were bserved in the appendix (Fig. 1b, arrows). CT oblique images evealed no appendicitis or appendiceal neoplasia (Fig. 2, arrows). ince the patient was asymptomatic, he was diagnosed with colonic nd appendiceal diverticulosis on the basis of CTC findings and was ollowed without treatment or additional examination. Appendiceal diverticulosis is rare, with a reported incidence of ongenital and acquired appendiceal diverticulum of 0.014% and .20 to 1.7%, respectively [1]. These rare lesions are usually found