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Skull base tumor

Nathan T Zwagerman, Georgios Zenonos, Stefan Lieber, Wei-Hsin Wang, Eric W Wang, Juan C Fernandez-Miranda, Carl H Snyderman, Paul A Gardner
The endoscopic endonasal approach (EEA) has significantly evolved since its initial uses in pituitary and sinonasal surgery. The literature is filled with reports and case series demonstrating efficacy and advantages for the entire ventral skull base. With competence in 'minimally invasive' parasellar approaches, larger and more complex approaches were developed to utilize the endonasal corridor to create maximally invasive endoscopic skull base procedures. The challenges of these more complex endoscopic procedures include a long learning curve and navigating in a narrow corridor; reconstruction of defects presented new challenges and early experience revealed a significantly higher risk of cerebrospinal fluid leak...
October 20, 2016: Journal of Neuro-oncology
Ahmad Chaddad, Camel Tanougast
To isolate the brain from non-brain tissues using a fully automatic method may be affected by the presence of radio frequency non-homogeneity of MR images (MRI), regional anatomy, MR sequences, and the subjects of the study. In order to automate the brain tumor (Glioblastoma) detection, we proposed a novel approach of skull stripping for axial slices derived from MRI. Then, the brain tumor was detected using multi-level threshold segmentation based on histogram analysis. Skull-stripping method, was applied by adaptive morphological operations approach...
March 2016: Brain Informatics
Hui Zhang, Li Ma, Yu-Bo Wang, Cheng Shu, Yong-An Huang, Lian-Qiang Dong, Gang-Ge Cheng
OBJECTIVE: Clear cell meningioma (CCM) is a rare histological subtype of meningioma which is classified as WHO grade II tumor. We conducted the present study to characterize clinical features of intracranial CCM and investigate the prognostic factors associated with surgical recurrence-free survival (RFS) of the patients. METHODS: PubMed and Embase were searched for case reports and series relevant to CCM. For each included study, relevant data were extracted, including patients' characteristics, pathology findings, therapeutic modality, and outcome...
October 12, 2016: World Neurosurgery
Pierre R Bourque, Gabrielle Bourque, William Miller, John Woulfe, Jodi Warman Chardon
Perineural invasion is a targeted cellular proliferation guided by neurotrophins, rather than a simple diffusion of tumor in a path of least resistance. Invasion of cranial nerves by squamous cell carcinoma can represent an important diagnostic dilemma. It commonly presents as a distinct clinical neurological syndrome of combined isolated trigeminal and facial neuropathies. The focal cancer source may have been overlooked or remain occult. This case series illustrates diverse clinical presentations and neuroimaging challenges in four patients with squamous cell carcinoma of the cranial nerves...
October 11, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Chandrashekhar R Bande, Akshay Mishra, M K Gupta, Manu Goel, Mayur J Gawande
PURPOSE: Resections in the posterior component of the oral cavity usually lead to severe functional compromise and lower quality of life for patients. Notable advances in reconstruction of the posterior part of the mouth and of the oropharynx have occurred in recent decades. The anatomic and physiologic rehabilitation of the defect to a reasonable outcome with low morbidity and mortality remains the founding basis of any surgical reconstruction, which also holds true for oral oropharyngeal and retromaxillary reconstructions...
September 17, 2016: Journal of Oral and Maxillofacial Surgery
Woo Young Choi, Ki Wook Sung, Young Seok Kim, Jong Won Hong, Tai Suk Roh, Dae Hyun Lew, Jong Hee Chang, Kyu Sung Lee
Skull base reconstruction is a challenging task. The method depends on the anatomical complexity and size of the defect. We obtained tissue by harvesting fat-containing perifascial areolar tissue (PAT) for reconstruction of limited skull base defects and volume augmentation. We demonstrated the effective option for reconstruction of limited skull base defects and volume augmentation. From October 2013 to November 2015, 5 patients underwent operations using fat-containing PAT to fill the defect in skull base and/or perform volume replacement in the forehead...
October 6, 2016: Annals of Plastic Surgery
Joseph Frankl, Cassi Grotepas, Baldassare Stea, G Michael Lemole, Alexander Chiu, Rihan Khan
BACKGROUND: Chordoma is a rare invasive bone tumor that may occur anywhere along the neuraxis. A total of three primary histological varieties have been identified: conventional, chondroid, and dedifferentiated. CASE PRESENTATION: We report a case of an 8-year-old white girl who presented with conventional chordoma, was treated with surgical resection and mixed proton and photon beam therapy, and had a recurrence in the resection cavity 2.5 years later with dedifferentiated morphology...
October 12, 2016: Journal of Medical Case Reports
Wei-Liang Chen, Zhao-Hui Yang, Zhi-Quan Huang, Song Fan, Da-Ming Zhang, You-Yuan Wang
PURPOSE: Head and neck tumors that involve the craniomaxillofacial region are classified as stage IVb disease and are clinically challenging. In this study, the outcomes of craniofacial resection and craniofacial reconstruction in patients with recurrent malignant tumors involving the craniomaxillofacial region were evaluated. PATIENTS AND METHODS: This retrospective observational study was conducted from January 2008 to August 2015. Data collected for each patient included age, gender, tumor site, initial treatment, craniofacial resection, reconstruction flaps and complications after craniofacial resection, adjuvant treatment, and reported outcomes of craniofacial resection and craniofacial reconstruction...
September 13, 2016: Journal of Oral and Maxillofacial Surgery
Vivek Kumar Kankane, Gaurav Jaiswal, Tarun Kumar Gupta
Pneumocephalus is commonly seen after head and facial trauma, ear infections, and tumors of the skull base or neurosurgical interventions. In tension pneumocephalus, the continuous accumulation of intracranial air is thought to be caused by a "ball valve" mechanism. In turn, this may lead to a mass effect on the brain, with subsequent neurological deterioration and signs of herniation. Tension pneumocephalus is considered a life-threatening, neurosurgical emergency burr-hole evacuation was performed and he experienced a full recovery...
October 2016: Asian Journal of Neurosurgery
Stefan Linsler, Sebastian Antes, Sebastian Senger, Joachim Oertel
OBJECTIVE: The safety of endoscopic skull base surgery can be enhanced by accurate navigation in preoperative computed tomography (CT) and magnetic resonance imaging (MRI). Here, we report our initial experience of real-time intraoperative CT-guided navigation surgery for pituitary tumors in childhood. MATERIALS AND METHODS: We report the case of a 15-year-old girl with a huge growth hormone-secreting pituitary adenoma with supra- and perisellar extension. Furthermore, the skull base was infiltrated...
October 2016: Journal of Neurosciences in Rural Practice
Anders Rosendal Korshoej, Guilherme Bicalho Saturnino, Line Kirkegaard Rasmussen, Gorm von Oettingen, Jens Christian Hedemann Sørensen, Axel Thielscher
OBJECTIVE: The present work proposes a new clinical approach to TTFields therapy of glioblastoma. The approach combines targeted surgical skull removal (craniectomy) with TTFields therapy to enhance the induced electrical field in the underlying tumor tissue. Using computer simulations, we explore the potential of the intervention to improve the clinical efficacy of TTFields therapy of brain cancer. METHODS: We used finite element analysis to calculate the electrical field distribution in realistic head models based on MRI data from two patients: One with left cortical/subcortical glioblastoma and one with deeply seated right thalamic anaplastic astrocytoma...
2016: PloS One
Chuanyuan Tao, Jiajing Wang, Yuekang Zhang, Shirong Qi, Fan Liu, Chao You
OBJECTIVE: Cerebral vasospasm can occur after skull base tumor removal. Few studies concentrated on the posterior circulation vasospasm after tumor resection in the posterior fossa. We aimed to identify the risk factors associated with postoperative vertebrobasilar vasospasm after tumor resection in the foramen magnum. METHODS: We retrospectively reviewed the data of 62 patients with tumors in the foramen magnum at our institution from January 2010 to January 2015...
2016: PloS One
M Kountouri, R A Schneider, M Walser, L Vinante, F Fiumedinisi, A Bolsi, A J Lomax, D C Weber
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
S K M Lau, K Patel, T Kim, E Knipprath, G Y Kim, L I Cervino, J D Lawson, K T Murphy, P Sanghvi, B S Carter, C Chen
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
J Phan, S J Frank, S Chun, X R Zhu, S Tung, C Wang, X Zhang, C Crawford, A S Garden, D I Rosenthal, G B Gunn, Q N Nguyen, C D Fuller, H Wang
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
M Hlavac, C R Wirtz, M-E Halatsch
Intraoperative magnetic resonance imaging is a widely accepted method for resection control of glial tumors. Increasingly, it is also used during the resection of skull base tumors. Several studies have independently demonstrated an increase in the extent of resection in these tumors with improved prognosis for the patients. Technical innovations combined with the easier operation of this imaging modality have led to its widespread implementation. The development of digital image processing has also brought other modalities such as ultrasound and computed tomography to the focus of skull base surgery...
September 26, 2016: HNO
Manila Antonelli, Alessandro Raso, Samantha Mascelli, Marco Gessi, Paolo Nozza, Antonella Coli, Marina P Gardiman, Antonietta Arcella, Maura Massimino, Francesca R Buttarelli, Felice Giangaspero
Chordomas arise in the skull base and spine and usually occur in adults and are rare in the pediatric population. Cases of chordoma in pediatric age are often poorly differentiated, showing cytologic atypia, increased cellularity, and mitosis, and their aggressive behavior is associated with a high incidence of metastatic spread and a short patient survival. Recent studies have described loss of SMARCB1/INI1 protein in poorly differentiated chordomas associated not with point mutations but with SMARCB1/INI1 gene deletions instead...
September 15, 2016: American Journal of Surgical Pathology
Sandip Basu, Preeti Fargose
The potential of peptide receptor radionuclide therapy (PRRT) is described in recurrent inoperable phosphaturic mesenchymal tumor involving left basi-occiput causing tumor-induced osteomalacia (TIO), for which the patient had undergone two times surgery previously. Following one cycle of PRRT, there was good symptomatic improvement, modest reduction of uptake on both (68)Ga-DOTATATE PET/CT and FDG-PET/CT suggesting favourable response and hence was considered for second cycle. Being somatostatin receptor avid, this rare group of tumors when inoperable or recurrent may be potentially targeted with PRRT...
September 15, 2016: Journal of Nuclear Medicine Technology
Masatoshi Yunoki, Kenta Suzuki, Atsuhito Uneda, Kimihiro Yoshino
BACKGROUND: Olfactory neuroblastoma (ONB) is a rare, aggressive tumor of the nasal cavity. It may invade the paranasal cavities and anterior skull base locally but may also metastasize to the cervical lymph nodes, lungs, or distant central nervous system. CASE DESCRIPTION: Here, we report a case of ONB in which emergency surgery was performed for intradural spinal metastasis (ISM). The patient was a 52-year-old male who underwent surgery for ONB. The tumor extended from the nasal cavity to the intracranial space and was resected completely...
2016: Surgical Neurology International
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