Fig. 23.30 Insulinoma: demonstrated by contrast-enhanced CT. These islet cell tumours of the pancreas are often less than 1.5cm in diameter, are multiple in 10 per cent of cases and are occasionally malignant, Their demonstration by CT requires a meticulous technique, using thin contiguous sections and rapid sequence scanning after a bolus of contrast medium. Even small insulinomas can be detected by CT because of their intense enhancement, as seen in this scan.
