An uncommon cause of abdominal pain following blunt abdominal trauma.

A 47-year-old otherwise healthy male presented to the emergency department 5 days after being involved in a motorcycle accident during which he hit his abdomen on the handlebars. The patient did not seek medical attention at the time of the accident. At the time of presentation to the emergency department, he was complaining of mild epigastric and left upper quadrant abdominal pain that was exacerbated by lying down, but had no relationship to eating. In addition, he was feeling increasingly distended, and was concerned that his stools were smaller in calibre and less frequent. The patient was experiencing mild nausea, but denied vomiting and had not been experiencing diarrhoea. He was afebrile and physical examination was remarkable only for mild tenderness to palpation in the epigastrium. Laboratory studies revealed an elevated lipase (166 U l). A contrast-enhanced CT scan of the patient’s abdomen and pelvis was obtained (Figure 1). What are the significant findings?