MR Imaging of Migrated Nucleus Pulposus after Collagenase Injection of Lumbar Disc Herniation: A Case Report.

Authors :: Sun BJT
Li B
Feng X
Yang HF
Source :: Journal of the Belgian Society of Radiology [J Belg Soc Radiol] 2022 Aug 11; Vol. 106 (1), pp. 73. Date of Electronic Publication: 2022 Aug 11 (Print Publication: 2022).
Publication Year :: 2022
Abstract: Magnetic resonance images (MRI) of migrated nucleus pulposus after collagenase treatment of lumbar disc herniation are rarely published. Here, we describe a 65-year-old woman with L5-S1 intervertebral disc herniation on the rear left. The patient was treated with a lumbar disc collagenase injection, and the pain was relieved. Two weeks later, the patient suddenly developed pain again after engaging in weight-bearing activity. Lumbar MRI showed a nodule in the spinal canal at the L5-S1 level. The patient underwent surgical treatment two days later. Pathology showed that the nodule was nucleus pulposus tissue. Teaching point: It is important to understanding the MR manifestations of migrated nucleus pulposus after collagenase treatment to prevent such misdiagnosis.<br />Competing Interests: The authors have no competing interests to declare.<br /> (Copyright: © 2022 The Author(s).)

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