Black where it should not be. A 62-year-old male patient with left lower quadrant abdominal pain. Sigmoid colon appeared stratified with muscular prevalence (white arrow) and perivisceral fat was markedly hypoechogenic (*). Adjacent to the bowel wall, a loculated inhomogeneous fluid collection was detected. A suspected diagnosis of complicated diverticulitis was formulated. Final diagnosis: Hinchey stage II diverticulitis (pelvic abscess > 4 cm).