This study reports an 8-year-old boy with chronic recurring thoracic pain. Magnetic resonance imaging of the spine revealed an intradural cyst at T1-T2. Despite severe compression of the spinal cord, there was no neurologic deficit. After minimally invasive cystectomy, the patient recovered completely. Histological examination established the diagnosis of a neurenteric cyst. The clinical, pathohistologic, and radiologic aspects are discussed, and the decisive role of magnetic resonance imaging in the diagnosis of intraspinal cyst is emphasized.