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Jacques J. Lara-Reyna, Rafael Uribe-Cardenas, Imali Perera, Nicholas Szerlip, Anastasios Giamouriadis, Nicole Savage, Therese Haussner and Mark M. Souweidane

R ecent clinical experience has established that the purely endoscopic removal of colloid cysts is a valid and advantageous surgical approach. Benefits associated with endoscopic removal have been reported for length of stay, operating times, and perioperative complications. 3 , 10 , 12 The features and outcomes associated with endoscopic treatment are derived from reports of patients being treated for a newly diagnosed or primary colloid cyst. Whether the same therapeutic benefit of endoscopic surgery can be extrapolated to patients who present with cyst

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John A. Jane Jr., Erin Kiehna, Spencer C. Payne, Stephen V. Early and Edward R. Laws Jr.

because the expanded sella provides a widened aperture to the suprasellar compartment and also diaphragmatic protection from pial invasion. 11 , 19 Although there is limited experience using the transsphenoidal approach for suprasellar tumors, 1 , 2 , 5 , 6 endoscopic transsphenoidal approaches introduced over the past decade are being increasingly used. 3 , 4 , 8–10 , 23 We describe our experience using the endoscopic transsphenoidal technique for adults with craniopharyngiomas and describe the neurological, endocrinological, and visual outcomes. Methods

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Tracy M. Flanders, Rachel Blue, Sanford Roberts, Brendan J. McShane, Bryan Wilent, Vijay Tambi, Dmitriy Petrov and John Y. K. Lee

the posterior fossa, there are limited data on fully endoscopic microvascular decompression (E-MVD) for HFS. The current study aimed to present one surgeon’s case series of HFS patients undergoing fully E-MVD to illustrate the safety and efficacy of the fully endoscopic technique. Methods Study Participants The University of Pennsylvania institutional review board approved this study, and a waiver of HIPAA Authorization was obtained as data were retrospectively analyzed. Between January 2013 and October 2016, 27 patients with a preoperative diagnosis of HFS

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Andrew R. Conger, M.S., Joshua Lucas, Gabriel Zada, Theodore H. Schwartz and Aaron A. Cohen-Gadol

extending to extrasellar locations were approached via the transcranial routes. As endoscopic technology, instrumentation, and relevant anatomical mastery have improved, the indications for transsphenoidal craniopharyngioma surgery have broadened, 13 and an emerging body of literature suggests that for most craniopharyngiomas, the degree of resection via the endonasal endoscopic approach in experienced hands is comparable or superior to those of transcranial routes, 7 , 12 , 18 , 21 , 23 but less invasive, potentially leading to improved visual outcome and shorter

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Han Yan, Taylor J. Abel, Naif M. Alotaibi, Melanie Anderson, Toba N. Niazi, Alexander G. Weil, Aria Fallah, John H. Phillips, Christopher R. Forrest, Abhaya V. Kulkarni, James M. Drake and George M. Ibrahim

A lthough emerging data from the endoscopic treatment of sagittal synostosis suggest more favorable perioperative outcomes, there is substantially less data to inform decisions for the surgical treatment of nonsagittal single-suture craniosynostosis. Metopic craniosynostosis, or trigonocephaly, is often characterized by a triangular anterior cranial vault, bitemporal narrowing with biparietal expansion, or midline forehead ridging. The incidence of metopic synostosis has been estimated to be as high as 1 in 5000 births, 23 and accounts for 10% of all

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Peter J. Wilson, Sacit B. Omay, Ashutosh Kacker, Vijay K. Anand and Theodore H. Schwartz

the natural history of the disease. Nevertheless, non–hormone producing pituitary tumors are benign slow-growing tumors and cause morbidity primarily from mass effect. In the absence of symptoms, the decision to operate rests on a careful weighing of the risks and benefits of surgery. Several publications have outlined the risks of surgery in the elderly population using the operative microscope, but with the advent of the endonasal endoscopic approach, the risks of surgery may have changed. Few publications have examined the risks of endonasal endoscopic pituitary

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Kunal S. Patel, Shaan M. Raza, Edward D. McCoul, Aikaterini Patrona, Jeffrey P. Greenfield, Mark M. Souweidane, Vijay K. Anand and Theodore H. Schwartz

treatment paradigm may be associated with delayed long-term sequelae. 16 Likewise, transsphenoidal surgery has also been shown retrospectively to result in fewer acute complications. 32 In light of these issues, there is no consensus on a balanced treatment strategy considering open versus endoscopic approaches, subtotal versus aggressive resection, and the role of radiotherapy. 39 A recent survey has shown a wide diversity in treatment preferences among practicing neurosurgeons. 19 Even more so, there is extremely limited data on posttreatment QOL, which would most

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Doo-Sik Kong, Stephanie Ming Young, Chang-Ki Hong, Yoon-Duck Kim, Sang Duk Hong, Jung Won Choi, Ho Jun Seol, Jung-Il Lee, Hyung Jin Shin, Do-Hyun Nam and Kyung In Woo

C ranioorbital tumors are complex lesions that involve the deep orbit, floor of the frontal bone, and lesser and greater wings of the sphenoid bone, where the skull base abuts both the anterior and middle cranial fossa. These tumors often produce significant ocular manifestations, such as compressive optic neuropathy, proptosis, or limitation of extraocular movement. Multiple approaches, such as cranioorbitozygomatic surgery, have been described to access these lesions. Recently, endoscopic skull base surgery has improved the ability to access complex skull base

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Dennis C. Nguyen, Scott J. Farber, Gary B. Skolnick, Sybill D. Naidoo, Matthew D. Smyth, Alex A. Kane, Kamlesh B. Patel and Albert S. Woo

postoperative molding helmet therapy, which is required of all patients to limit anteroposterior projection and optimize parietal expansion. 12 The endoscopic technique was adopted by our institution in 2006. This study examines the first 100 endoscope-assisted suturectomy and postoperative helmeting cases for sagittal synostosis and describes outcomes and the evolution of patient care protocols at our institution. Methods This study was approved by the institutional review board of the Washington University School of Medicine in St. Louis. A retrospective chart review was

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S. Alex Rottgers, Subash Lohani and Mark R. Proctor

effective at correcting the pathologic head shapes seen in single-suture craniosynostosis. 2–4 , 18 , 26 These procedures are less invasive than traditional open cranioplasty and allow safe interventions at an early age. While widely used in cases of single-suture craniosynostosis, only sporadic reports exist of this technique's use in cases of multisuture synostosis. We present a series of patients with bilateral coronal craniosynostosis who were treated successfully with bilateral endoscopic release of the coronal sutures with postoperative helmeting, and we discuss