Lateral thoracic meningocele demonstrated by computerized tomography

Abstract

Posterior mediastinal masses are common in patients with neurofibromatosis. Most are lateral meningoceles rather than solid neurogenic tumors.

Computed tomography best demonstrates the extent and the nature of posterior mediastinal masses and defines associated bony erosion. Introduction of Metrizamide into the subarachnoid space and subsequently into the mass with demonstration of a CSF-Metrizamide fluid level confirms the diagnosis of meningocele.