====== Suboccipital pseudomeningocele ======

An “internal” [[CSF fistula]]. [[Incidence]] following [[suboccipital craniectomy]]: 26-28%
((Roland PS, Marple BF, Meyerhoff WL, et al. Complications of lumbar spinal fluid drainage. Otolaryngol Head Neck Surg. 1992; 107:564–569)).

May be asymptomatic, but also may be associated with H/A, nausea/vomiting, local pain/tenderness. Some are soft and compressible, others may be tense. Indications for operation:

1. external leak (CSF fistula) 

2. threatening integrity of incision

3. cosmetic deformity

4. causing symptoms

===== Treatment =====

[[Suboccipital pseudomeningocele treatment]].

===== Suboccipital Pseudomeningocele after posterior fossa decompression for Chiari type 1 deformity =====

see [[Suboccipital Pseudomeningocele after posterior fossa decompression for Chiari type 1 deformity]].