A case of posterior fossa neurenteric cyst

Abstract

A rare case of intracranial neurenteric cyst was reported, and we review the literature about intracranial neurenteric cyst. A 29-year-old man presented with headache. Computed tomography demonstrated cystic lesion in front of the brainstem. Magnetic resonance imaging demonstrated a low intensity lesion on T1-weighted image and a high intensity lesion on T2-weighted image. The cyst wall was not enhanced after Gd-DTPA administration. Diffusion weighted image (DWI) demonstrated low intensity. Surgery was performed and the cyst was subtotally resected. DWI demonstrated all neurenteric cysts with low intensity, while epidermoid cysts are characterized by high intensity on DWI. We suppose that DWI is useful for differentiating between neurenteric cyst and epidermoid cyst.