CT and MRI findings for Brunner's gland hamartoma: report of three cases.

Brunner's gland hamartoma (BGH) is an uncommon, benign, tumor-like lesion of the duodenum. Endoscopic diagnosis of larger BGH is sometimes difficult. We describe computed tomography (CT) and magnetic resonance imaging (MRI) findings for three patients with BGH. In all three cases, CT and MRI revealed internal cystic changes within the mass and a stalk originating in the duodenal bulb. These findings may be useful for diagnosis of BGH.