What is extradural cyst?

An extradural cyst is a fluid-filled sac located outside the dura mater, the outermost membrane covering the brain and spinal cord. These cysts can occur in various locations, often associated with the spine, and can result from conditions like trauma, infection, or degenerative changes. They may be asymptomatic or cause symptoms such as pain or neurological deficits if they compress surrounding structures. Diagnosis typically involves imaging studies, and treatment options may include observation or surgical intervention depending on the cyst's size and symptoms.