A<unk>  is an abnormal collection of cerebrospinal fluid (CSF) that communicates with the CSF space around the brain or spinal cord. In contrast to a meningocele, in which the fluid is surrounded and confined by dura mater, in a<unk> , the fluid has no surrounding membrane, but is contained in a cavity within the soft tissues.<unk>  may result after brain surgery, spine surgery, or brachial plexus avulsion injury. Treatment for<unk>  is conservative or may involve neurosurgical repair.
Pseudomeningocele
Cystocele
Dacryocystocele
Lymphocele
Rectocele
Perineal hernia
Ureterocele
Inguinal hernia