An obese 24-year-old man was admitted following a road traffic accident, during which he crashed into several cars and a shop. He had not been drinking alcohol, yet did not recall the incident. The family had noticed recent odd behaviour, episodic aggression and a glazed look at times. Apart from a minor whiplash injury, he was uninjured and clinically normal. A computed tomography (CT) head scan and encephalo-electrography were both normal. Routine investigations were unremarkable apart from a fasting glucose 0.9 mmol l-1. In view of the presenting symptoms and fasting hypoglycaemia, a CT scan of the abdomen was performed (Figure 1). What does this show?