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Skull base tumor

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https://www.readbyqxmd.com/read/28924072/-pre-and-intra-operative-supporting-technology-for-brain-tumors-11-microscopic-transcranial-and-endoscopic-transsphenoidal-approaches-for-resection-of-skull-base-tumors-in-the-cavernous-sinus
#1
https://www.readbyqxmd.com/read/28917250/emerging-technologies-in-stereotactic-body-radiotherapy
#2
Lijun Ma, Lei Wang, Chia-Lin Tseng, Arjun Sahgal
Stereotactic body radiation therapy (SBRT) stems from the initial developments of intra-cranial stereotactic radiosurgery (SRS). Despite similarity in their names and clinical goals of delivering a sufficiently high tumoricidal dose, maximal sparing of the surrounding normal tissues and a short treatment course, SBRT technologies have transformed from the early days of body frame-based treatments with X-ray verification to primarily image-guided procedures with cone-beam CT or stereoscopic X-ray systems and non-rigid body immo-bilization...
September 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28914872/-the-efficacy-of-desmopressin-in-the-treatment-of-central-diabetes-insipidus-after-resection-of-chiasmo-sellar-region-tumors
#3
L I Astaf'eva
Central diabetes insipidus (CDI) is a neuroendocrine disease, the pathogenesis of which is associated with abnormal secretion of the antidiuretic hormone. One of the specific causes of CDI is neurosurgical resection of chiasmatic-sellar region tumors. AIM: to study the efficacy and safety of desmopressin in CDI patients after resection of chiasmatic-sellar region (CSR) tumors. MATERIAL AND METHODS: Examination and treatment of patients were performed at a hospital for 7-14 days after surgery and then were continued after discharge...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28914866/-extended-endoscopic-endonasal-posterior-transclival-approach-to-tumors-of-the-clival-region-and-ventral-posterior-cranial-fossa-part-1-topographic-and-anatomical-features-of-the-clivus-and-adjacent-structures
#4
A N Shkarubo, K V Koval', G F Dobrovol'skiy, M A Shkarubo, V V Karnaukhov, B A Kadashev, D N Andreev, I V Chernov, O A Gadzhieva, O Yu Aleshkina, E A Anisimova, P L Kalinin, M A Kutin, D V Fomichev, O I Sharipov, D B Ismailov, E S Selivanov
OBJECTIVE: to describe the main topographic and anatomical features of the clival region and its adjacent structures for improvement and optimization of the extended endoscopic endonasal posterior (transclival) approach for resection of tumors of the clival region and ventral posterior cranial fossa. MATERIAL AND METHODS: We performed a craniometric study of 125 human skulls and a topographic anatomical study of heads of 25 cadavers, the arterial and venous bed of which was stained with colored silicone (the staining technique was developed by the authors) to visualize bed features and individual variability...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28913318/modified-anterior-craniofacial-osteotomy-using-partial-nasal-bone-division-and-reconstruction-in-frontoethmoidal-sinus-meningioma
#5
Eon Ju Park, Hong Il Kim, Jin Hyung Park, Hyung Suk Yi
Typical transcranial approaches are insufficient for adequate visualization and resection of skull base tumors. Different approaches with multiple modifications have been attempted. Here, we describe a new approach for a lesion that is central and hard to treat by conventional craniotomy and successful reconstruction with calvarial bone graft and titanium mesh plate. A 69-year-old female patient presented with recurrent meningioma. The tumor had invaded the frontal lobe, right supraorbital rim, and ethmoidal bone...
June 2017: Arch Craniofac Surg
https://www.readbyqxmd.com/read/28901666/clinicopathological-and-molecular-characteristics-of-pediatric-meningiomas
#6
Sudha Battu, Anupam Kumar, Pankaj Pathak, Suvendu Purkait, Linchi Dhawan, Mehar C Sharma, Ashish Suri, Manmohan Singh, Chitra Sarkar, Vaishali Suri
Molecular and clinical characteristics of pediatric meningiomas are poorly defined. Therefore, we analyzed clinical, morphological and molecular profiles of pediatric meningiomas. Forty pediatric meningiomas from January 2002 to June 2015 were studied. 1p36, 14q32 and 22q-deletion were assessed by fluorescent in situ hybridization and mutations of most relevant exons of AKT, SMO, KLF4, TRAF and pTERT using sequencing. Expression of GAB1, stathmin, progesterone receptor (PR), p53 along with MIB-1 LI was examined using immunohistochemistry...
September 13, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28894884/characterization-of-skull-base-lesions-using-pseudo-continuous-arterial-spin-labeling
#7
B Geerts, D Leclercq, S Tezenas du Montcel, B Law-Ye, S Gerber, D Bernardeschi, D Galanaud, D Dormont, N Pyatigorskaya
PURPOSE: Pseudo-continuous arterial spin labeling (pCASL) is a non-invasive magnetic resonance (MR) perfusion technique. Our study aimed at estimating the diagnostic performance of the pCASL sequence in assessing the perfusion of skull base lesions both qualitatively and quantitatively and at providing cut-off values for differentiation of specific skull base lesions. METHODS: In this study 99 patients with histopathologically confirmed skull base lesions were retrospectively enrolled...
September 11, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28887285/the-occipital-artery-as-an-alternative-donor-for-low-flow-bypass-to-anterior-circulation-after-ica-occlusion-failure-prior-to-exenteration-for-an-atypical-cavernous-sinus-meningioma-a-technical-case-report
#8
Shunya Hanakita, Stéphanie Lenck, Moujahed Labidi, Kentaro Watanabe, Damien Bresson, Sébastien Froelich
BACKGROUND: and Importance: In skull-base tumors involving the cavernous sinus (CS), indications for aggressive resection are sparse and must be carefully examined because of their invasiveness. With careful evaluation, techniques including internal carotid artery (ICA) sacrifice with or without extracranial-intracranial (EC-IC) bypass may still be an option in some cases. In addition, previous surgery with the sacrifice of potential donor vessels requires adjusting the revascularization strategy...
September 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28887281/cerebrospinal-fluid-leak-rhinorrhea-after-systemic-erlotinib-chemotherapy-for-metastatic-lung-cancer-a-familiar-problem-from-an-unfamiliar-culprit
#9
Blake Priddy, Douglas A Hardesty, André Beer-Furlan, Bradley Otto, Daniel M Prevedello
BACKGROUND: Cerebrospinal fluid (CSF) rhinorrhea after medical therapy for pituitary prolactinoma is a rare but well-described phenomenon. To our knowledge, no CSF leaks have been reported after targeted medical treatment of pituitary or anterior skull base metastases. We report this unusual case to raise awareness of spontaneous CSF leaks in the setting of skull base metastatic disease. CASE PRESENTATION: A 66-year-old woman presented with EGFR-mutant Stage IV adenocarcinoma of the lung...
September 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28882714/combined-minimally-invasive-supraciliary-and-transfacial-approach-for-large-tumors-with-skull-base-and-sinonasal-involvement
#10
Pal Barzo, Zsolt Zador, Mihaly Bodosi, Zsolt Bella, Daniel Jambor, Bela Fulop, Jeno Czigner
BACKGROUND: Tumors invading both the anterior skull base and the sinonasal area have been traditionally accessed via largely invasive open craniofacial approaches. Minimally invasive extended endoscopic endonasal approaches have recently become increasingly available, but have anatomical limitations and require incremental experience and thus high patient volume. Our objective was to assess the applicability of a novel combination of the minimally invasive supraciliary incision and the limited maxillofacial osteotomy as a combined surgical approach for large tumors invading both the anterior skull base and the sinonasal area...
September 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28882711/stereotactic-radiosurgery-of-central-skull-base-meningioma-s-volumetric-evaluation-and-long-term-outcomes
#11
Mohana Rao Patibandla, Cheng-Chia Lee, Jason Sheehan
BACKGROUND AND OBJECTIVE: Central skull base meningioma's (CSMs) complete resection is possible but it is often associated with high morbidity. Stereotactic radiosurgery (SRS) plays an appreciable role in the management of skull base meningiomas. The study aims to apply volumetric methods to assess CSM response after SRS and correlate with clinical outcomes. MATERIALS AND METHODS: The cohort consisted of 219 patients, of whom 73.9% were female (n=162), with a median age of 55 years (19-88)...
September 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28882600/lesson-to-be-remembered-from-a-skull-base-tumor
#12
C Briet, F Bernard, P Rodien
The natural history of giant prolactinomas is not known. While it is commonly accepted that the enlargement of microadenoma is rare and more limited than macroadenoma, it is so far uncommon that macroadenoma progress to giant adenoma. Thus, spontaneous enlargement of adenomas is poorly documented. We report the unusual history of undiagnosed microprolactinoma, revealed 12years later at the stage of a giant adenoma presenting as a skull base tumor. This unique observation provides information on the natural history of giant adenomas and arguments for particular attention to microadenomas with signs of invasion...
September 4, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28881251/registration-and-fusion-quantification-of-augmented-reality-based-nasal-endoscopic-surgery
#13
Yakui Chu, Jian Yang, Shaodong Ma, Danni Ai, Wenjie Li, Hong Song, Liang Li, Duanduan Chen, Lei Chen, Yongtian Wang
This paper quantifies the registration and fusion display errors of augmented reality-based nasal endoscopic surgery (ARNES). We comparatively investigated the spatial calibration process for front-end endoscopy and redefined the accuracy level of a calibrated endoscope by using a calibration tool with improved structural reliability. We also studied how registration accuracy was combined with the number and distribution of the deployed fiducial points (FPs) for positioning and the measured registration time...
August 3, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28877055/solitary-fibrous-tumors-of-the-head-and-neck-a-multi-institutional-clinicopathologic-study
#14
Steven C Smith, William E Gooding, Matthew Elkins, Rajiv M Patel, Paul W Harms, Andrew S McDaniel, Nallasivam Palanisamy, Cora Uram-Tuculescu, Bonnie B Balzer, David R Lucas, Raja R Seethala, Jonathan B McHugh
Solitary fibrous tumors (SFTs) of the head and neck are uncommon. Lesions previously diagnosed in the head and neck as hemangiopericytomas (HPCs), giant cell angiofibromas (GCAs), and orbital fibrous histiocytomas (OFHs) are now recognized as within the expanded spectrum of SFTs. To better understand the clinicopathologic profile of head and neck SFTs, we performed a multi-institutional study of 88 examples. There was no sex predilection (F:M ratio 1.2), and the median patient age was 52 years (range: 15 to above 89 y)...
September 4, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28875116/performance-of-robotic-assistance-for-skull-base-biopsy-a-phantom-study
#15
Jian-Hua Zhu, Jing Wang, Yong-Gui Wang, Meng Li, Yu-Xing Guo, Xiao-Jing Liu, Chuan-Bin Guo
Objectives  This study aims to evaluate the feasibility of a custom robot system guided by optical cone beam computed tomography (CBCT)-based navigation for skull base biopsy. Design  An accuracy study was conducted. Setting  Platform for navigation and robot-aided surgery technology. Participants  Phantom skull. Main Outcome Measures  The primary outcome measure was to investigate the accuracy of robot-assisted needle biopsy for skull base tumors. A 14-gauge needle was automatically inserted by the five degrees of freedom robot into the intended target, guided by optical navigation...
October 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28875046/ganglioneuroma-of-the-external-auditory-canal-and-middle-ear
#16
Hesham Saleh Almofada, Michael Steven Timms, M Anas Dababo
OBJECTIVE: We report an extremely rare case of ganglioneuroma involving the external auditory canal and middle ear. CASE REPORT: Ganglioneuromas are rare benign mature tumors thought to originate from sympathetic ganglions, with the highest incidence in the retroperitoneum, adrenal medulla, and posterior mediastinum. We present a case of ganglioneuroma of the external auditory canal and middle ear. At the age of 12 months, the patient was diagnosed with neuroblastoma stage IV with metastasis to the squamous temporal bone, bone marrow, and skull base...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28872554/detection-of-non-fdg-avid-residual-sinonasal-malignant-melanoma-in-the-skull-base-with-11c-choline-pet-and-contrast-enhanced-mri
#17
Chunxia Qin, Fan Hu, Maher Mohamad Rajab Arnous, Xiaoli Lan
Primary sinonasal melanoma is a rare disease. We present a case of melanoma in sinuses without abnormal F-FDG activity anywhere in the scanned portion of the body. In further assessment, C-choline PET/CT revealed high activity in the paranasal sinuses, skull base, and adjacent brain, in agreement with the high signal on contrast-enhanced T1-weighted MRI scan, which suggested the residual tumor.
September 1, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28872506/an-aneurysmal-bone-cyst-in-the-skull-base
#18
Sangjun Kim, Dong Won Jung, Min Gyoung Pak, Young Jin Song, Woo Yong Bae
An aneurysmal bone cyst (ABC) is believed to be attributable to intraosseous circulatory disturbance. An ABC is a vascular tumor of the bone caused by bony expansion after partial vascular occlusion and congestion. Most ABCs are found in adolescents (approximately 75% of ABCs are observed in patients under 20 years of age). The most common ABC sites are the long bones of the limbs, the vertebrae, and the cranial bone. Aneurysmal bone cysts in the skull base or ethmoid sinus have been but rarely reported worldwide...
September 1, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28868197/combined-simultaneous-transcranial-and-endoscopic-endonasal-resection-of-sphenoorbital-meningioma-extending-into-the-sphenoid-sinus-pterygopalatine-fossa-and-infratemporal-fossa
#19
Masahide Matsuda, Hiroyoshi Akutsu, Shuho Tanaka, Akira Matsumura
BACKGROUND: Sphenoorbital meningiomas are surgically challenging because of their nature to extend to adjacent structures. Here, we describe a case of recurrent sphenoorbital meningioma extending into the sphenoid sinus, pterygopalatine fossa, and infratemporal fossa, which was resected using combined simultaneous transcranial and endoscopic endonasal approaches. CASE DESCRIPTION: A 62-year-old man who had 15 years earlier undergone partial resection of a left sphenoorbital meningioma presented with a 1-year history of progressive proptosis of the left eye...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28868018/spinal-cord-compression-secondary-to-metastatic-sinonasal-undifferentiated-carcinoma
#20
Arthur Wang, John V Wainwright, Anubhav G Amin, Eric Vail, Rachel Silverstein, Kaushik Das
Sinonasal undifferentiated carcinoma (SNUC) is a rare malignancy of the upper airways and anterior skull base that carries a poor prognosis. The tumor is known to be invasive into the surrounding structures of the skull base and brain. To date, there is only one existing case report documenting drop metastasis to the intradural extramedullary spinal cord. To the best of our knowledge, we present the second case of metastatic SNUC to the spine. This report describes a 59-year-old male with a history of head and neck SNUC who presented with thoracic back pain and bilateral lower extremity paresis...
May 2017: Case Reports in Oncology
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