CTICasesLateral Thoracic Meningoceles in Neurofibromatosis Type 1
Imaging findings
Chest CT demonstrates multiple large, fluid-attenuation, cystic masses in the lateral thoracic region, extending through widened neural foramina. Prominent widening of the spinal canal is present. Multiple hyperdense cutaneous nodules consistent with neurofibromas are visible on the skin.
Key takeaways
Lateral thoracic meningoceles are benign protrusions of the dural sac through the neural foramina, most commonly occurring in patients with neurofibromatosis type 1. They represent a manifestation of dural ectasia and can easily be mistaken for solid neurogenic tumors, duplication cysts, or other posterior mediastinal masses. Recognition of the associated neural foraminal widening and osseous changes of the spine is key to preventing unnecessary biopsies or interventions.
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