Presentation
Had decompressive craniotomy for Chiari 1 malformation one year ago. Follow-up MRI was requested.
Patient Data
Age: 60 years
Gender: Female
From the case:
Pseudomeningocele
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- extradural fluid collection of CSF signal overlying the occipital craniotomy defect, communicating with the adjacent CSF spaces and extending to the posterior subcutaneous tissues of the neck in keeping with pseudomeningocele
- associated cervical cord syrinx seen as an intramedullary cystic lesion of low signal on T1, high signal on T2 and STIR, extending from the bulbomedullary junction to the distal spinal cord
- normal CSF flow surrounding the cervicomedullary junction on CSF flow studies
Case Discussion
MRI features of occipital pseudomeningocele following a decompressive craniotomy for Chiari 1 malformation with syrinx.
Pseudomeningoceles are defined as abnormal collections of cerebrospinal fluid (CSF) due to leakage from the CSF-filled spaces surrounding the brain and/or spinal cord as a result of trauma or surgery.
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