The Teaching Point

Discal cyst should be included in the differential diagnosis of an extradural cystic lesion adjacent to a degenerated lumbar disk, the diagnosis of which can be confirmed by discography. Although such cysts have traditionally been treated with surgical resection, CT-guided aspiration and injection is a minimally invasive treatment option.






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From the manuscript

Lumbar discal cyst: Diagnostic discography followed by therapeutic computed tomography-guided aspiration and injection

Free full text article: Lumbar discal cyst: Diagnostic discography followed by therapeutic computed tomography-guided aspiration and injection

Abstract
Discal cysts are extradural masses that communicate with the intervertebral disk and are a rare cause of lower back pain and lumbar radiculopathy. This case report describes a lumbar discal cyst, the diagnosis of which was confirmed on conventional discography, and which was treated with computed tomography-guided aspiration and steroid injection. Several reports have described this procedure, but only one in the radiology literature, and thus the purpose of this report is to remind the radiology community of the existence of this entity and propose a minimally invasive means of treatment.






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