Abstract
Minimally invasive surgical (MIS) approaches to the spine are increasingly adopted for intradural pathology. In this setting, they may especially be useful to minimize risk of CSF leakage due to the decreased disruption to paraspinal musculature and minimal dead space. Herein, the authors demonstrate their technique for the resection of an intradural thoracolumbar schwannoma in a 30-year-old woman via an MIS approach using a nonexpandable tubular retractor. Salient points include the use of bayonetted instruments and the technique for dural closure in a small corridor. Indications for this technique are discussed in the context of a series of patients with intradural extramedullary lesions.