title: Cerebellopontine angle arachnoid cyst associated with mirror movements.
abstract: Arachnoid cysts are benign developmental collections of cerebrospinal fluid (CSF). They constitute approximately 1% of intracranial masses. The cerebellopontine angle (CPA) arachnoid cysts are rare and often asymptomatic. The onset of symptoms and signs is usually due to the compression of the brain, cranial nerves and obstruction of CSF circulation. The major clinical symptoms for CPA arachnoid cysts were reported as headache, ataxia and 8(th) cranial nerve palsy. We report a patient with a CPA arachnoid cyst. He presented with cranial nerve palsies and mirror movements found in upper extremities. We postulated that CPA arachnoid cyst compressing the brain stem and the pyramidal decussation may lead to mirror movements. We conclude that mirror movements can be associated with CPA arachnoid cyst.
authors.affiliation: Department of Pediatric Neurology, Ankara Pediatric and Pediatric Hematology Oncology Training and Research Hospital, Ankara, Turkey.
authors.forename: Esra
authors.initials: E
authors.lastname: Gurkas
authors.affiliation: Department of Neurology, Etimed Hospital, Ankara, Turkey.
authors.forename: Buket Yucel
authors.initials: BY
authors.lastname: Altan
authors.affiliation: Department of Pediatric Neurology, Faculty of Medicine, Gazi University, Ankara, Turkey.
authors.forename: Kıvılcım
authors.initials: K
authors.lastname: Gücüyener
authors.affiliation: Department of Pediatric Neurology, Faculty of Medicine, Gazi University, Ankara, Turkey.
authors.forename: Ebru
authors.initials: E
authors.lastname: Kolsal
keywords: Arachnoid cyst; cerebellopontine angle; mirror movement