Imaging of Sequestered Lumbar Discs

Autor: Gangwon Jeong, Heecheol Park, Sun Joo Lee, Dae-Hyun Park, Sung Hwa Paeng, Eugene Lee
Jazyk: English<br />Korean
Rok vydání: 2024
Předmět:
Zdroj: Journal of the Korean Society of Radiology, Vol 85, Iss 1, Pp 3-23 (2024)
Druh dokumentu: article
ISSN: 2951-0805
DOI: 10.3348/jksr.2023.0154
Popis: Intervertebral disc herniation is frequently encountered in radiological practice. Sequestered disc herniation occurs when the disc material undergoes degeneration and completely loses continuity with the parent nucleus pulposus. Sequestered discs can reside within and outside the spinal canal, exerting a mass effect on adjacent structures, compressing nerve pathways, and eliciting a range of clinical symptoms. In particular, sequestered discs within the dura cannot be identified without durotomy. Therefore, precise preoperative localization is crucial for surgical planning. On MRI, the signal intensity of the sequestered disc may vary due to independent degeneration processes. Additionally, most sequestered disc fragments show varying degrees of peripheral enhancement depending on the degree of angiogenesis and granulation around the isolated tissue. In this article, we review various imaging findings and the location of the sequestered disc to provide patients with an accurate diagnosis and appropriate treatment direction.
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