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[On the intrathoracic meningocoele. Diagnostic usefulness of myeloscintigraphy (author's transl)]
Abstract:
Intrathoracic meningocoele (I.M.) consists of a bulging out of the meninges in the posterior mediastinum through an intervertebral foramen or a bone defect in the thoracic spine. It is a rare condition generally asymptomatic and often associated with von Recklinghausen's neurofibromatosis, whose aetiopathogenesis and clinical significance have not yet been completely clarified. The AA. describe a case of I.M. in a patient with neurofibromatosis who at 37 years of age presented spastic monoparesis in the left lower limb with subacute onset. In this case two abnormally wide intervertebral foramina and scalloping of the posterior rims of the vertebral bodies close to the meningocoele were observed. These changes seem to point to an alteration in bone development as the chief cause of intrathoracic meningocoele in contrast with other aetiopathogenic hypotheses. Excluding the presence of other expansive lesion, spastic monoparesis might be related to a confined medullary involvment due to compression of arterial or venous vessels by the meningocoele. Finally the AA. emphasize the importance of myeloscintigraphy, wich easily allows correct diagnosis by showing a typical pool of radioactive tracer in the meningocoele bulge lateral to the spine.
Insights
Intrathoracic meningocoele (I.M.), a rare condition often linked to neurofibromatosis, may stem from bone development alterations. Myeloscintigraphy aids diagnosis of I.M. presenting with neurological symptoms.
Area of Science:
- Neurology
- Radiology
- Genetics
Background:
- Intrathoracic meningocoele (I.M.) is a rare posterior mediastinal meningocele, often asymptomatic and associated with neurofibromatosis.
- Its exact cause and clinical significance remain unclear, prompting further investigation into associated pathologies.
Observation:
- A case study details a 37-year-old patient with neurofibromatosis experiencing subacute spastic monoparesis in the left lower limb.
- Radiological examination revealed abnormally wide intervertebral foramina and vertebral scalloping adjacent to the I.M.
Findings:
- The observed bone abnormalities suggest altered bone development as a primary cause of I.M.
- Spastic monoparesis, in the absence of other lesions, may result from medullary compromise due to vascular compression by the I.M.
Implications:
- This case highlights a potential link between bone development anomalies and I.M. in neurofibromatosis patients.
- Myeloscintigraphy is crucial for diagnosing I.M., visualizing tracer accumulation in the meningocoele bulge.
- Early diagnosis and understanding of I.M. pathogenesis are vital for managing associated neurological deficits.