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2016, Volume 7, Number 2, Page(s) 084-096
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Minimally Invasive Surgery for Intradural Extramedullary Spinal Tumors: A Comprehensive Review with Illustrative Clinical Cases
Martin H. Pham, Ki-Eun Chang, John C. Liu, Patrick C. Hsieh
Department of Neurosurgery, Keck School of Medicine, University of Southern California, Los Angeles, California
Keywords: Intradural extramedullary spine tumors, MIS, minimally invasive spine surgery, spinal neoplasms
Intradural extramedullary spinal tumors have recently been successfully treated via minimally invasive surgical approaches. Many studies have shown good results with benefits over traditional open surgery. The authors reviewed the literature to find all studies involving minimally invasive resection of intradural extramedullary spinal tumors through the use of a tubular retractor system. Nine studies were found for a total of 114 patients with reported mean ages from 46.5 to 63.8 years and follow-up times from 1.5 months to 24 months. Studies reported their gross-total resection rates (range, 75-100%), mean operative time (range, 184.9-256.3 min), mean estimated blood loss (range, 56-238.8 ml), and hospital length of stays (range, 2.4-6.9 days). The most common surgery-related complication was CSF leak or pseudomeningocele in 6 patients (5.3%) of which 4 patients (3.5%) required a reoperation. Minimally invasive surgery for the resection of intradural extramedullary tumors is safe and effective, and offers a reduction in operative blood loss, lower risk of cerebrospinal fluid leak, and shorter hospital stay for select patients.
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