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Been researching possible reasons why I feel worse than I did prior to surgery!
Pseudomeningocele: "A leak of spinal fluid through the duraplasty creates a pocket of CSF in the posterior cervical muscles. If the fluid collection enlarges, it pushes the duraplasty membrane into the foramen magnum region causing crowing and recurrence of the Chiari symptoms. In a few cases, spinal fluid leaks through the incision and, if untreated, leads to infection.
While a number of Chiari centers have been able to keep the risk of pseudomenigocele very low, rates as high as 18% patients have been reported.
If the PM is small, it can be observed with follow-up MRI scans and may resolve on its own. However, large persistent PMs pose difficulties. The duraplasty can become adherent to the underlying cerebellar tonsils and block CSF flow. Once adherent, surgical revision is difficult."
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