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Skull base surgery

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https://www.readbyqxmd.com/read/28799867/endoscope-assisted-repair-of-csf-otorrhea-and-temporal-lobe-encephaloceles-via-keyhole-craniotomy
#1
Pamela C Roehm, Derrick Tint, Norman Chan, Ryan Brewster, Vishad Sukul, Kadir Erkmen
OBJECTIVE Temporal lobe encephaloceles and cerebrospinal fluid otorrhea from temporal bone defects that involve the tegmen tympani and mastoideum are generally repaired using middle fossa craniotomy, mastoidectomy, or combined approaches. Standard middle fossa craniotomy exposes patients to dural retraction, which can lead to postoperative neurological complications. Endoscopic and minimally invasive techniques have been used in other surgeries to minimize brain retraction, and so these methods were applied to repair the lateral skull base...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28791194/a-case-report-of-surgical-management-of-hemangiopericytoma-at-the-foramen-magnum
#2
Nobuhiko Arai, Satoshi Takahashi, Hatano Mami, Yukina Tokuda, Kazunari Yoshida
BACKGROUND: Hemangiopericytoma (HPC) is a highly vascularized mesenchymal tumor known for its high rates of recurrence and metastasis. The extent of tumor removal is known to be the most trustful prognostic factor. Skull base HPCs are challenging to treat because of the difficulty of the surgical approach and proximity to vital vascular and neuronal structures. We successfully treated a case of HPC at the ventral foramen magnum through surgical gross tumor removal via a far-lateral transcondylar approach...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28768937/definitive-surgical-treatment-of-osteomalacia-induced-by-skull-base-tumor-and-determination-of-the-half-life-of-serum-fibroblast-growth-factor-23
#3
Taijun Hana, Shota Tanaka, Hirofumi Nakatomi, Masaaki Shojima, Seiji Fukumoto, Masako Ikemura, Nobuhito Saito
Tumor-induced osteomalacia (TIO) is a rare paraneoplastic syndrome often associated with fibroblast growth factor 23 (FGF23)-producing tumors such as phosphaturic mesenchymal tumor, mixed connective tissue variant (PMTMCT) affecting the bone and soft tissue. We experienced a patient with progressive bone and muscle pain due to FGF23-related TIO. Venous sampling had strongly suggested the anterior skull base as a source of FGF23, which led to the discovery of a small tumor in the ethmoid sinus extending intracranially...
August 2, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28766024/usefulness-of-intraoperative-electromyographic-monitoring-of-oculomotor-and-abducens-nerves-during-skull-base-surgery
#4
Zi-Yi Li, Ming-Chu Li, Jian-Tao Liang, Yu-Hai Bao, Ge Chen, Hong-Chuan Guo, Feng Ling
BACKGROUND: Intraoperative neurophysiologic monitoring of the extraocular cranial nerve (EOCN) is not commonly performed because of technical difficulty and risk, reliability of the result and predictability of the postoperative function of the EOCN. METHODS: We performed oculomotor nerve (CN III) and abducens nerve (CN VI) intraoperative monitoring in patients with skull base surgery by recording the spontaneous muscle activity (SMA) and compound muscle action potential (CMAP)...
August 2, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28765065/reconstructive-outcome-of-intraoperative-cerebrospinal-fluid-leak-after-endoscopic-endonasal-surgery-for-tumors-involving-skull-base
#5
Chi-Man Jeon, Sang Duk Hong, Ho Jun Seol, Jung-Il Lee, Do-Hyun Nam, Yoon Jung Hwang, Doo-Sik Kong
Endoscopic transnasal surgery for tumors located at the base of the skull has a high incidence of postoperative cerebrospinal fluid (CSF) leaks. Here, we assessed the repair outcomes for high-flow CSF leaks based upon the tumor location, and analyzed the reasons for repair failure after transnasal endoscopic surgery solely for tumors involving the base of the skull. From Feb. 2009 to Dec. 2014 we performed endoscopic endonasal surgery for a variety of skull base lesions in 788 patients at our institution. Among them, 95 patients with intradural skull base tumors underwent endoscopic transnasal surgery...
July 29, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28764208/assessing-the-viability-of-hadad-flap-by-postoperative-contrast-enhanced-magnetic-resonance-imaging
#6
Hegde Jyotirmay, Sunil Kumar Saxena, A S Ramesh, K Nagarajan, Shreshta Bhat
INTRODUCTION: The Expanded Endonasal Approaches (EEAs) have been widely used for various skull base lesions. The reconstruction of the skull base defects is of vital importance to prevent postoperative complications. The vascular pedicled-nasoseptal flap (Hadad-Bassagasteguy flap) is used as a workhorse in reconstruction of majority of the defects. AIM: The purpose of this study was: (a) To assess the postoperative MRI appearance of vascularised pedicled nasoseptal flap for its viability; (b) To determine the variations in MRI that may suggest potential flap failure...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28761532/skull-base-bony-lesions-management-nuances-a-retrospective-analysis-from-a-tertiary-care-centre
#7
Amit Kumar Singh, Arun Kumar Srivastava, Jayesh Sardhara, Kamlesh Singh Bhaisora, Kuntal Kanti Das, Anant Mehrotra, Rabi Narayan Sahu, Awadhesh Kumar Jaiswal, Sanjay Behari
BACKGROUND: Skull base lesions are not uncommon, but their management has been challenging for surgeons. There is large no of bony tumors at the skull base which has not been studied in detail as a group. These tumors are difficult not only because of their location but also due to their variability in the involvement of important local structure. Through this retrospective analysis from a Tertiary Care Centre, we are summarizing the details of skull base bony lesions and its management nuances...
July 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28761516/surgical-management-of-giant-skull-osteomas
#8
Farid Yudoyono, Roland Sidabutar, Rully Hanafi Dahlan, Arwinder Singh Gill, Sevline Estethia Ompusunggu, Muhammad Zafrullah Arifin
OBJECTIVE: Surgical management of giant skull osteomas Osteomas are benign, generally slow growing, bone forming tumors limited to the craniofacial and jaw bones. MATERIALS AND METHODS: A retrospective review of all cases of osteoma diagnosed from 2009 to 2013 treated in our hospital. The data collected included age at diagnosis, gender, lesion location, size, presenting and duration of symptoms, treatment, complication and outcome. RESULTS: During our study period there were 15 cases that were treated surgically...
July 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28761512/surgical-treatment-of-large-and-giant-cavernous-carotid-aneurysms
#9
REVIEW
Kitiporn Sriamornrattanakul, Ittichai Sakarunchai, Kei Yamashiro, Yasuhiro Yamada, Daisuke Suyama, Tsukasa Kawase, Yoko Kato
Cavernous carotid aneurysms (CCAs) are uncommon pathologic entities. Extradural place and the skull base location make this type of an aneurysm different in clinical features and treatment techniques. Direct aneurysm clipping is technically difficult and results in a significant postoperative neurological deficit. Therefore, several techniques of indirect surgical treatment were developed with different surgical outcomes, such as proximal occlusion of internal carotid artery (ICA) or trapping with or without bypass (superficial temporal artery-middle cerebral artery bypass or high-flow bypass)...
July 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28758410/current-and-emerging-principles-in-surgery-for-meningioma
#10
Wenya Linda Bi, Ian F Dunn
Surgery continues to be the preferred method to treat meningioma. Recent advancements in the understanding of meningioma biology, including a new appreciation for remarkable molecular heterogeneity in these tumors, has sharpened the drive for disease control, especially on initial diagnosis. Microsurgical and skull base techniques and principles dominate the surgical approaches for meningiomas. At the same time, biologic tools may improve the extent of surgical resection as well as provide novel adjuvant therapy options for challenging meningiomas...
July 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28758183/neuronavigation-guided-endoscopic-endonasal-excision-of-schwannoma-like-chordoma-of-the-meckel-s-cave-a-case-report
#11
Ali Akay, Sercan Göde, M Sedat Çağli
Chordomas are locally aggressive malignant tumors due to their recurrence potential, originating from the embryonic notochord remnants. Chordomas can originate anywhere on the axial skeleton. They are extradural and are spread by bone destruction. Chordomas are locally aggressive tumors which invade the dura mater, and may also present with secondary intradural growth. The Meckel's cave location of chordomas has been very rarely reported in the literature. Chordomas located in the Meckel's cave can be radiologically confused with trigeminal schwannomas...
June 14, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28757702/clinical-characteristics-of-crouzon-syndrome
#12
L Balyen, L S Deniz Balyen, S Pasa
Crouzon syndrome (CS) is an genetic disorder with autosomal dominant inheritance caused by mutation of the gene for fibroblast growth factor receptor 2 (FGFR2) was described as one of the varieties of craniosynostosis. In this presented case, premature closure of the sutures had caused restricted skull growth and lack of space for the growing brain resulted to shallowed eyes and cranial and ophthalmic deformities and impairment in tooth development. Management of a patient of CS has two components. First is the release of prematurely fused sutures based on evidence of raised intracranial pressure...
May 2017: Oman Journal of Ophthalmology
https://www.readbyqxmd.com/read/28754434/improved-method-for-cannula-fixation-for-long-term-intracerebral-brain-infusion
#13
Ádám Sike, Jonas Wengenroth, Jolanta Upīte, Thomas Brüning, Iván Eiriz, Petra Sántha, Henrik Biverstål, Baiba Jansone, Håvard Jostein Haugen, Markus Krohn, Jens Pahnke
BACKGROUND: Implanted osmotic minipumps are commonly used for long-term, brain-targeted delivery of a wide range of experimental agents by being connected to a catheter and a cannula. During the stereotactical surgery procedure, the cannula has to be placed correctly in the x-y directions and also with respect to the injection point in the z-direction (deepness). However, the flat fixation base of available cannula holders doesn't allow an easy, secure fixation onto the curve-shaped skull...
July 25, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28751167/volume-staged-gamma-knife-surgery-for-the-treatment-of-large-skull-base-meningioma-surrounding-the-optical-apparatus-a-snowman-shape-design
#14
Chain-Fa Su, Dai-Wei Liu, Cheng-Chia Lee, Tsung-Lang Chiu
BACKGROUND: In cases of meningioma surrounding the optical apparatus, this study sought to reduce the incidence of radiation-induced optical neuropathy resulting from gamma knife surgery (GKS) by dividing the treatment volume into 2 or 3 fractions. METHODS: Four patients with a large skull base meningioma (1 male and 3 females; median age: 42 years; range: 33-43 yrs) were treated using volume-staged GKS. In stage I, the large basal part of the tumor (13.2 mL; range: 3...
July 24, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28748855/clinical-characteristics-and-endoscopic-endonasal-removal-of-foreign-bodies-within-sinuses-orbit-and-skull-base
#15
Yi-Hui Wen, Wei-Jian Hou, Wen-Bin Lei, Feng-Hong Chen, Xiao-Lin Zhu, Zhang-Feng Wang, Ren-Qiang Ma, Wei-Ping Wen
BACKGROUND: Foreign bodies within the sinuses, orbit, and skull base (FBSOS) are rare; hence, diagnosis and management guidelines are lacking. Endoscopic sinus surgery (ESS) removal is preferred because of the less invasiveness and minimal morbidity. This study was designed to summarize clinical experience with ESS management of FBSOS. METHODS: We retrospectively reviewed clinical manifestations, imaging findings, treatment, and outcomes in consecutive patients with ESS removal of FBSOS between 2004 and 2015 at a tertiary academic medical center...
August 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28742240/role-of-tissue-eosinophils-in-chronic-rhinosinusitis-associated-olfactory-loss
#16
Leah J Hauser, Rakesh K Chandra, Ping Li, Justin H Turner
BACKGROUND: Olfactory dysfunction is 1 of the hallmark symptoms of chronic rhinosinusitis (CRS). Eosinophilic inflammation has been implicated as a potential causative factor. However, prior studies have been limited by retrospective study designs, concomitant use of systemic corticosteroids, and other confounding factors. METHODS: CRS and healthy non-CRS control subjects undergoing endoscopic sinus or skull-base surgery were prospectively enrolled and completed olfactory testing utilizing the 40-item Smell Identification Test (SIT) immediately prior to surgery...
July 25, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28739401/a-review-of-nasal-paranasal-and-skull-base-tumors-invading-the-orbit
#17
REVIEW
Morten Jørgensen, Steffen Heegaard
Tumors that invade the orbit are uncommon. The majority are meningiomas arising from the sphenoid ridge (66 %). Others are bone and cartilage tumors arising from the surrounding bones surrounding the orbit, pituitary adenomas, and epithelial tumors arising from the paranasal sinuses and nasal cavity. Meningiomas occur more often in females, whereas epithelial tumors have a predilection for males. Meningiomas and epithelial tumors typically present in the sixth decade of life, whereas bone tumors tend to affect individuals in their third decade of life...
July 21, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28739094/automatic-repositioning-of-jaw-segments-for-three-dimensional-virtual-treatment-planning-of-orthognathic-surgery
#18
Rodrigo Mologni Gonçalves Dos Santos, José Mario De Martino, Luis Augusto Passeri, Romis Ribeiro de Faissol Attux, Francisco Haiter Neto
PURPOSE: To develop a computer-based method for automating the repositioning of jaw segments in the skull during three-dimensional virtual treatment planning of orthognathic surgery. The method speeds up the planning phase of the orthognathic procedure, releasing surgeons from laborious and time-consuming tasks. MATERIALS AND METHODS: The method finds the optimal positions for the maxilla, mandibular body, and bony chin in the skull. Minimization of cephalometric differences between measured and standard values is considered...
July 4, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28737554/standardized-protocol-for-virtual-surgical-plan-and-3-dimensional-surgical-template-assisted-single-stage-mandible-contour-surgery
#19
Xi Fu, Jia Qiao, Sabine Girod, Feng Niu, Jian Feng Liu, Gordon K Lee, Lai Gui
BACKGROUND: Mandible contour surgery, including reduction gonioplasty and genioplasty, has become increasingly popular in East Asia. However, it is technically challenging and, hence, leads to a long learning curve and high complication rates and often needs secondary revisions. The increasing use of 3-dimensional (3D) technology makes accurate single-stage mandible contour surgery with minimum complication rates possible with a virtual surgical plan (VSP) and 3-D surgical templates. This study is to establish a standardized protocol for VSP and 3-D surgical templates-assisted mandible contour surgery and evaluate the accuracy of the protocol...
July 22, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28736350/antibiotic-prophylaxis-in-endoscopic-endonasal-pituitary-and-skull-base-surgery
#20
Laura Milanese, Matteo Zoli, Giacomo Sollini, Chiara Martone, Corrado Zenesini, Carmelo Sturiale, Paolo Farneti, Giorgio Frank, Ernesto Pasquini, Diego Mazzatenta
OBJECTIVE: Postoperative infection is a potentially dramatic consequence in endoscopic endonasal surgery. The aim of this study is to assess the efficacy of our intraoperative antibiotic prophylaxis, analyzing the risk factors of postoperative meningitis in our series. METHODS: Each endoscopic endonasal procedure performed since 1998 in patients with no preoperative infections and a follow-up longer than 30 days have been included and retrospectively reviewed. Antibiotic protocol consisted in single antibiotic administration of ampicillin/sulbactam 3 g or cefazolin 2 g on induction, no postoperative administrations have been performed after 2005...
July 20, 2017: World Neurosurgery
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