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11 Ιουν 2024 · Arachnoid cysts can occur anywhere within the central nervous system, most frequently (50-60%) located in the middle cranial fossa, where they invaginate into and widen the Sylvian fissure. In this location, they can be classified into three types based on their size: see Galassi classification .
Spinal arachnoid cysts are relatively uncommon and may be either intradural (type III meningeal cyst) or extradural (type IA meningeal cyst). This article specifically focuses on spinal arachnoid cysts. For a general discussion of arachnoid cysts, refer to the main article: arachnoid cyst.
The common locations for arachnoid cyst include the middle fossa, posterior fossa, and the suprasellar region. Most cases of arachnoid cysts are asymptomatic. CT scans and MRI are the investigation of choice for an arachnoid cyst.
9 Μαΐ 2016 · Spinal arachnoid cysts (AC) are intraspinal extramedullary loculated cerebral spinal fluid collections. They are relatively uncommon lesions. Spinal AC often cause symptoms such as pain, weakness and radiculopathy.
20 Οκτ 2015 · Spinal arachnoid cysts (AC) are intraspinal extramedullary loculated cerebral spinal fluid collections. They are relatively uncommon lesions. Spinal AC often cause symptoms such as pain, weakness and radiculopathy.
Often, the cysts are an incidental finding on magnetic resonance imaging (MRI). Usually, arachnoid cysts are asymptomatic; this is true even of cysts that are quite large. The most commonly...
26 Μαρ 2023 · Arachnoid cysts (ACs) are usually congenital, extraaxial, benign, cystic lesions filled with cerebrospinal fluid. The most common etiology is splitting of the arachnoid layer. They are usually asymptomatic and are discovered incidentally during prenatal fetal ultrasound and neuroimaging modalities.
