Findings on abdominal CT scan suggestive of glucagonoma include a reinforced mass in the arterial phase of the enhanced CT scan. Symptomatic but non functioning glucagonomas are usually large (>3 cm) at the time of diagnosis.

The CT scan findings associated with glucagonoma include:^{[1][2][3][4][5]}

• CT scans are used to determine the location of the tumor, show the organs nearby, determining the stage of cancer and in determining whether surgery is a good treatment option.
• Spiral multi phasic contrast-enhanced CT is recommended.
• Sensitivity is greater than 80 percent but it is decreased for tumors smaller than 2 cm.
• With contrast, glucagonomas often enhance with iodinated contrast during the early arterial phase with washout during the portal venous imaging phase.
• Liver metastases may appear isodense with the liver on a non-contrasted study.
• Symptomatic but nonfunctioning glucagonomas are usually large (>3 cm) at the time of diagnosis.