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Visish M. Srinivasan, Patrick J. Karas, Anish N. Sen and Jared S. Fridley

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Jared S. Fridley, Andrew Jea, Chris D. Glover and Kim P. Nguyen

Cerebrospinal fluid leakage causing a pseudomeningocele is a well-recognized complication after spine surgery. The repair of pseudomeningocele in a symptomatic patient is usually accomplished with direct open surgical repair of the durotomy, prolonged lumbar drainage, and/or placement of an epidural blood patch. The authors highlight a unique method of pseudomeningocele repair by presenting 2 cases of adolescent girls with symptomatic lumbar pseudomeningoceles. In both cases ultrasound was used to guide the aspiration of CSF from each pseudomeningocele and to apply the epidural blood patch. Both patients had complete and immediate resolution of symptoms. The authors found ultrasound to be a useful tool to assess the extent of the CSF leakage, to determine the degree of aspiration of the extradural CSF, and to confirm the injection of the blood into the epidural space and the space created by the pseudomeningocele.

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Sean M. Barber, Jonathan Nakhla, Sanjay Konakondla, Jared S. Fridley, Adetokunbo A. Oyelese, Ziya L. Gokaslan and Albert E. Telfeian

OBJECTIVE

Endoscopic discectomy (ED) has been advocated as a less-invasive alternative to open microdiscectomy (OM) and tubular microdiscectomy (TM) for lumbar disc herniations, with the potential to decrease postoperative pain and shorten recovery times. Large-scale, objective comparisons of outcomes between ED, OM, and TM, however, are lacking. The authors’ objective in this study was to conduct a meta-analysis comparing outcomes of ED, OM, and TM.

METHODS

The PubMed database was searched for articles published as of February 1, 2019, for comparative studies reporting outcomes of some combination of ED, OM, and TM. A meta-analysis of outcome parameters was performed assuming random effects.

RESULTS

Twenty-six studies describing the outcomes of 2577 patients were included. Estimated blood loss was significantly higher with OM than with both TM (p = 0.01) and ED (p < 0.00001). Length of stay was significantly longer with OM than with ED (p < 0.00001). Return to work time was significantly longer in OM than with ED (p = 0.001). Postoperative leg (p = 0.02) and back (p = 0.01) VAS scores, and Oswestry Disability Index scores (p = 0.006) at latest follow-up were significantly higher for OM than for ED. Serum creatine phosphokinase (p = 0.02) and C-reactive protein (p < 0.00001) levels on postoperative day 1 were significantly higher with OM than with ED.

CONCLUSIONS

Outcomes of TM and OM for lumbar disc herniations are largely equivalent. While this analysis demonstrated that several clinical variables were significantly improved in patients undergoing ED when compared with OM, the magnitude of many of these differences was small and of uncertain clinical relevance, and several of the included studies were retrospective and subject to a high risk of bias. Further high-quality prospective studies are needed before definitive conclusions can be drawn regarding the comparative efficacy of the various surgical treatments for lumbar disc herniations.

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Ali H. Palejwala, Jared S. Fridley, Krystal Garcia, Sanjeev A. Vasudevan, David Khechoyan, Surya Rednam, Chester J. Koh and Andrew Jea

Neurofibrosarcoma is rare in the pediatric age group. A malignant tumor of the sacrum presents significant challenges, especially if the goals are to resect with wide and clean surgical margins and to achieve acceptable functional outcomes. The authors report a case of this rare tumor affecting the sacrum and sacral nerve roots of a 7-year-old girl and review the role of total hemisacrectomy sparing the contralateral sacral nerve roots and lumbopelvic reconstruction in the treatment of this disease. This patient is, to the best of the authors' knowledge, the youngest to be treated in this manner.

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Matthew J. Kole, Jared S. Fridley, Andrew Jea and Robert J. Bollo

Currarino syndrome is a rare constellation of congenital anomalies characterized by the triad of sacral dysgenesis, presacral mass, and anorectal malformation. It is frequently associated with other congenital anomalies, often including occult spinal dysraphism. Mutations in the MNX1 gene are identified in the majority of cases. The authors report a rare case of Currarino syndrome in an infant with tethered cord syndrome and a dorsal lipomyelomeningocele continuous with a presacral intradural spinal lipoma, in addition to an imperforate anus and a scimitar sacrum. They review the literature to highlight patterns of occult spinal dysraphism in patients with Currarino syndrome and their relationship to tethered cord syndrome. Approximately 60% of the patients with Currarino syndrome reported in the literature have an occult spinal dysraphism. Published studies suggest that the risk of tethered cord syndrome may be higher among patients with a lipoma and lower among those with a teratoma or anterior meningocele.