Posterior Cranial Fossa Neurenteric Cyst with Malignant Transformation

Full Article

JB Chiang, SSM Lo, LC Ho, CM Chan, WL Poon, KW Tang, YL Cheung

Hong Kong J Radiol 2014;17:281-4

DOI: 10.12809/hkjr1413223

Neurenteric cyst is a notably rare epithelium-lined cystic lesion found in the central nervous system. Malignant transformation of the neurenteric cyst is infrequent, with only six cases reported in the English literature. We report the case of a 74-year-old patient with recurrent neurenteric cyst in the posterior cranial fossa that underwent malignant transformation 2 years after initial surgery. Histologically, the initial lesion was compatible with benign neurenteric cyst, whereas the recurrent lesion illustrated features of adenocarcinoma.