n.死骨切除（术）
Narrowing in the intervertebral space . Abscess formation by chance paravertebral soft tissue without bone sequestrum.
易侵犯相邻的椎间盘导致椎间隙狭窄,未见死骨或软组织肿块,偶有脓肿形成,具有多灶性特点.
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