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AP lumbar spine radiograph.
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After the procedure, plain radiographs were obtained to locate the needle fragment (Figure 1).
Computed tomography of lumbar spine.
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Neurosurgery the following day; a CT scan was performed showing "foreign body" posterolateral to the left lamina of L1 (Figure 2). Neurosurgery recommended no intervention due to lack of symptoms and location of needle behind bony structures.