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Anil Nanda

TO THE EDITOR: We appreciate the publication of our article, “Isadore Max Tarlov (1905–1977) and the controversial Tarlov cyst: historical perspective” ( J Neurosurg Spine [epub ahead of print October 30, 2015; DOI: 10.3171/2015.5.SPINE1590]). On reading the article online, however, we discovered two misspellings in the abstract and one in the text. In the abstract (line 3), “homeostasis” should have been “hemostasis” and “lumber” should have been “lumbar.” In the text, in the subsection entitled Introduction of the “Dry Surgical Field” in Spine Surgery

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Mayur Sharma, Ashish Sonig, Sudheer Ambekar and Anil Nanda

the low incidence of these lesions limits the research related to the analysis of these factors. 1 , 4 , 6 , 8 , 17 To highlight this issue we analyzed the Nationwide Inpatient Sample (NIS) to study the outcomes and socioeconomic variations of IMSCT surgery. To the best of our knowledge there has been only one study in which the complications and outcomes following SCT resection were analyzed using the data compiled in the NIS database from 1993 to 2002. 16 In that study, the adverse outcome following SCT resection was found to be associated with a higher

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Mayur Sharma, Sudheer Ambekar, Bharat Guthikonda, Jessica Wilden and Anil Nanda

stimulation (DBS) for PD in the last decade, lesional surgery has again fallen out of favor, and DBS has become the treatment of choice for refractory or advanced PD. Reversibility of side effects and the ability to treat bilaterally and to optimize the treatment during programming are the key advantages of DBS over lesioning. 14 , 20 Other indications of DBS are dystonia and tremor in movement disorders, depression, obsessive-compulsive disorder, and Tourette's syndrome in psychiatry, epilepsy, cluster headache, pain from stroke, amputation, trigeminal neuralgia, and

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Anil Nanda, Vijayakumar Javalkar and Anirban Deep Banerjee

approach was selected by the primary author based on multiple factors including the size, extent of brainstem compression, involvement of vasculature, extension of tumor outside the petroclival area, neurological status (including presence or absence of hearing), and goal of surgery (that is, GTR or STR for brainstem decompression). The most commonly used approach was the transpetrosal approach (in 16 patients), followed by the orbitozygomatic approach (in 13) ( Fig. 1 ). Staged resection was performed in 1 patient (2%). In addition to the petroclival meningioma, 1

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Amitabha Chanda, Donald R. Smith and Anil Nanda

I n spinal surgery, especially during lumbar or thoracic fusion in which instrumentation is placed, blood replacement is often required. An increased incidence of complications, however, occurs in these patients when homologous transfusions are performed. These complications include transmitted diseases such as viral hepatitis, cytomegalovirus infection, and human immunodeficiency virus infection. 9, 13, 19, 20 Other complications include alloimmunization and hypersensitivity reactions. These complications can can be avoided by conducting autologous

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Impact of body habitus on fluoroscopic radiation emission during minimally invasive spine surgery

Presented at the 2014 AANS/CNS Joint Section on Disorders of the Spine and Peripheral Nerves

Sunil Kukreja, Justin Haydel, Anil Nanda and Anthony H. Sin

M inimally invasive spine surgery (MISS) techniques have gained widespread popularity in recent years. Minimal soft-tissue dissection with a short hospital stay and short recovery period are the potential advantages of MISS. 7 The advent of fluoroscopic guidance and endoscopic technology has played an important role in the evolution of these techniques over the course of the last several years. 1 , 13 Simultaneously, there is also a growing concern of radiation exposure with MISS. 3 , 6 , 12 , 14 , 15 , 23 , 24 Mariscalco et al. 12 compared the

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Amitabha Chanda and Anil Nanda

O livecrona reported the first surgical treatment of a vertebrobasilar aneurysm in 1932; however, it was Charles Drake 6 who is considered the pioneer of surgery of aneurysms located at the BA bifurcation. The BA bifurcation and the upper portion of the BA trunk are located in the interpeduncular and upper prepontine cisterns, deep at the center of the cranial base. This area is crowded by important neurovascular structures. Approaching this area, which commonly must be done to clip an aneurysm at the BA bifurcation, is a formidable task. This problem is

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John Diaz Day and Anil Nanda

applied in these procedures to achieve satisfactory closure. This aspect of contemporary cranial base surgery has taken advantage of the unique expertise of neurosurgeons and our otorhinolaryngology colleagues. Our ability to traverse the naso- and oropharyngeal spaces to reach the skull base and intracranial compartment has realized significant advancements in the past years. New biological and structural materials as well as innovative vascularized tissue transfer techniques have contributed equally to an enhanced ability to create seals that prevent egress of CSF

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Sudheer Ambekar and Anil Nanda

-mining rubble, and the stick used by butchers to hold open a carcass. 16 The transformation of the name of a dental impression material into a surgical device is credited to Esser (1877–1946). Esser was a plastic surgeon in Holland who pioneered the art of reconstructive surgery during World War I. He was the Special Surgeon for Plastic Operations at the hospital in Vienna and was looking after soldiers who sustained facial wounds during the war. Esser used Stent's dental material to help keep the surgical grafts in place and referred to the material as “stents mold.” 8

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David E. Connor Jr. and Anil Nanda

arachnoidal membrane” in his myelographic study of 1965, although he does credit its description to Liliequist. 6 The eponym first appeared in print in 1976, in Dr. Yaşargil's landmark description of the cisterns, effectively cementing its place in neurosurgical and anatomical parlance 34 ( Fig. 2 ). FIG. 2. Illustration from Yaşargil's 1976 treatise, “Anatomical observations of the subarachnoid cisterns of the brain during surgery,” detailing the orientation of the major subarachnoid cisterns as viewed from a left pterional approach. The membrane of Liliequist is