33 Islet Cell Tumor of the Pancreas (Insulinoma)

Clinical Presentation

A 53-year-old woman presents with mild abdominal pain, diaphoresis, and palpitations.

Fig. 33.1 (A) Axial contrast-enhanced CT image shows a small arterially enhancing lesion in the tail of the pancreas (arrow). (B) The lesion is also seen on an early arterial phase gadolinium-enhanced MRI. (C) The patient underwent intraoperative ultrasound prior to resection, which confirmed the lesion.

Radiologic Findings

Axial contrast-enhanced computed tomography (CT) images (Fig. 33.1) show a small arterially enhancing lesion in the tail of the pancreas. The lesion is also seen on an early arterial-phase gadolinium-enhanced magnetic resonance (MR) image. Intraoperative ultrasound confirmed the lesion prior to resection.