Spinal intramedullary arachnoid cyst: case report and literature review

An Adult Cervical Intramedullary Arachnoid Cyst: Case Report and Review

“…All cases of purely intramedullary arachnoid cysts reported in the literature showed a growth overtime accompanied by sudden neurological deterioration, requiring immediate surgical evacuation [3,4,[6][7][8][9][10][11][13][14][15][16][17][18]. To date, there is no existing literature on a quiescent intramedullary arachnoid cyst detected incidentally in an asymptomatic subject [10].…”

“…None of these showed worsening of the preoperative neurological deficits. Instead all the patients presented a clear improvement during the first weeks following the procedure, which was independent from the duration or severity of symptoms [3,4,[6][7][8][9][10][11][13][14][15][16][17][18]. The authors report the only published case of intramedullary adult arachnoid cyst with neurological stability during follow-up (five years), and managed with a wait and scan approach.…”

“…There are only six cases reported in the literature, in patients over 18-year-old, all with thoracic location [6][7][8][9][10][11].…”

Intramedullary cyst formation after removal of multiple intradural spinal arachnoid cysts: A case report

“…[ 1 3 ] Cysts may be located in the extradural space or less frequently they are located intradurally,[ 3 ] however, an intramedullar localization is a rare entity. [ 5 ] Clinical presentation is secondary to spinal cord compression, but asymptomatic patients have also been reported. [ 5 ] Several theories have been postulated regarding the possible etiology of intradural arachnoid cysts, such as congenital, post-inflammatory, post-hemorrhagic, and post-traumatic.…”

“…[ 5 ] Clinical presentation is secondary to spinal cord compression, but asymptomatic patients have also been reported. [ 5 ] Several theories have been postulated regarding the possible etiology of intradural arachnoid cysts, such as congenital, post-inflammatory, post-hemorrhagic, and post-traumatic. Cysts can also be secondary to iatrogenic injuries or can be idiopathic.…”