Neurenteric Cyst Masquerading as Acute Flaccid Paralysis in a 2-Month-Old Infant.

BACKGROUND: Neurenteric cysts rarely present in infancy. Compressive myelopathy or meningitis are the usual presenting features of these cysts in infants. CASE DESCRIPTION: We discuss a case of intradural extramedullary neurenteric cyst at the cervicomedullary junction in a 2-month-old infant who presented with features of acute onset flaccid upper limb weakness. The cyst was excised completely and the child improved. CONCLUSIONS: Although rare, compressive lesions such as neurenteric cysts may present with acute flaccid paralysis in very young children. Differentiating from other causes and timely intervention bears an excellent outcome.