Friday, June 10, 2011

Posterior Mediastinal Mass

  • Nerve sheath tumors: Schwannoma, neurofibroma.
  • Aortic aneurysm:
  • Paraspinal Hematoma:
  • Sympathetic ganglion tumor: Neuroblastoma (younger than 3), ganglioneuroblastoma (3-10), ganglioneuroma (older than 10), paraganglioma.
  • Paraspinal Abscess:
  • Lateral meningocele: Cerebrispinal fluid attenuation/signal meningeal protrusion through a neural foramen. More common in the thoracic spine and on the right. Strong association with neurofibromatosis type 1 (bilateral). Can also be seen with Marfan syndrome.
  • Extramedullary hematopoiesis: Multiple lobulated posterior mediastinal masses associated with ribs and vertebral bodies with prominent trabeculae. No calcification. Heterogeneous enhancement.
  • Esophageal duplication cyst (shown above): Duplication cysts are defined by a well-developed smooth muscle, epithelial lining of a part of the gastrointestinal tract, and past or present attachment to a part of the gastrointestinal tract. Esophageal duplication cysts are more common on the right side and in the lower half of the chest. 30% contain gastric mucosa. They often have associated vertebral anomalies (neurenteric cyst).

1 comment:

  1. Thanks alot fr sharing this useful information..interesting..u have nice and unique posts..keep updating..


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