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https://www.readbyqxmd.com/read/28109858/radiological-dilemma-in-an-extra-axial-petroclival-lesion-low-vs-high-grade
#1
Madhivanan Karthigeyan, Chirag Kamal Ahuja, Debjyoti Chatterjee, Pravin Salunke
BACKGROUND: Radiological differentiation between a low and high grade lesion is crucial on deciding the extent of resection and prognostication. Occasionally the imaging features can be confusing between the two. We report such a case which was a radiological dilemma. The lesion appeared apparently benign and extra-axial on routine magnetic resonance (MR) sequences. However, there were subtle clinical and imaging clues towards high grade lesion. CASE DESCRIPTION: A 27-year-old lady presented with multiple cranial nerve palsies, gait ataxia and features of raised intracranial pressure...
January 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28105188/rapid-progression-of-glioblastoma-multiforme-a-case-report
#2
Yan Yan Zhang, Ling Xiang Ruan, Sheng Zhang
Glioblastoma multiforme (GBM) tumors are intracranial lesions with varying shapes that grow rapidly. GBM tumors most commonly present as solitary lesions and multiple lesions are rare. The aim of the present case report was to investigate the imaging features of glioblastoma multiforme (GBM). In this study, the case of a 60-year-old patient who was hospitalized due to seizures is presented. Magnetic resonance imaging (MRI) revealed multiple lesions, heterogeneous in size, with peritumoral edema and ring-shaped enhancement...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28101173/particularly-interesting-cys-his-rich-protein-is-highly-expressed-in-human-intracranial-aneurysms-and-resists-aneurysmal-rupture
#3
Yu-Tao Peng, Xiang-En Shi, Zhi-Qiang Li, Xin He, Yu-Ming Sun
Particularly interesting Cys-His-rich protein (PINCH) has several biological functions in cancer development, invasion and metastasis in malignant cells, and the expression of PINCH is upregulated in several cancer types, including breast cancer, gastric adenocarcinoma and rectal cancer. However, the contribution of PINCH to human cerebral aneurysms remains largely unknown. Therefore, the significance of PINCH expression in cerebral aneurysm growth and rupture was examined in the present study. The protein expression levels of alpha-smooth muscle actin, osteopontin (OPN), matrix metalloproteinase (MMP) 9 and PINCH were evaluated using immunohistochemistry and western blot analyses...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28100861/-a-case-of-intracranial-localized-castleman-s-disease-mimicking-convexity-meningioma
#4
Keisuke Ozono, Takashi Fujimoto, Makoto Hirose, Ichiro Kawahara, Kazuyoshi Uchihashi
A 68-year-old man presented with abnormal behavior and Todd's paralysis on the right side after having taken a bath. Computed tomography and magnetic resonance imaging revealed a tumor mimicking convexity meningioma that had a perifocal edema, although its mass was not very large. The patient underwent surgery, and full recovery was achieved following a total removal of the lesion. Pathohistological examination demonstrated an intermediate type of Castleman's disease. The final diagnosis was intracranial localized Castleman's disease because the results of the full physical examination and laboratory analyses were normal...
January 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28098415/intracranial-aav-ifn-%C3%AE-gene-therapy-eliminates-invasive-xenograft-glioblastoma-and-improves-survival-in-orthotopic-syngeneic-murine-model
#5
Dwijit GuhaSarkar, James Neiswender, Qin Su, Guangping Gao, Miguel Sena-Esteves
The highly invasive property of glioblastoma (GBM) cells and genetic heterogeneity are largely responsible for tumor recurrence after the current standard-of-care treatment and thus a direct cause of death. Previously, we have shown that intracranial interferon-beta (IFN-β) gene therapy by locally administered adeno-associated viral vectors (AAV) successfully treats noninvasive orthotopic glioblastoma models. Here, we extend these findings by testing this approach in invasive human GBM xenograft and syngeneic mouse models...
November 9, 2016: Molecular Oncology
https://www.readbyqxmd.com/read/28097788/outcome-of-patients-with-intracranial-relapse-enrolled-on-national-wilms-tumor-study-group-clinical-trials
#6
Rajkumar Venkatramani, Yueh-Yun Chi, Max J Coppes, Marcio Malogolowkin, John A Kalapurakal, Jing Tian, Jeffrey S Dome
BACKGROUND: The occurrence of brain metastases (at diagnosis or at relapse) in patients with Wilms tumor is very rare. METHODS: We retrospectively reviewed the clinical characteristics of patients with Wilms tumor and relapse to the brain enrolled on the National Wilms Tumor Studies (NWTSs) 1-5. RESULTS: Intracranial relapse was documented in 47 patients (0.5%). Of the 45 patients with adequate data, 26 (58%) patients were male. Thirty-eight (84%) patients had favorable histology Wilms tumor...
January 18, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28096196/craniospinal-irradiation-using-helical-tomotherapy-for-central-nervous-system-tumors
#7
Sanziana R I Schiopu, Gregor Habl, Matthias Häfner, Sonja Katayama, Klaus Herfarth, Juergen Debus, Florian Sterzing
The aim of this study was to describe early and late toxicity, survival and local control in 45 patients with primary brain tumors treated with helical tomotherapy craniospinal irradiation (HT-CSI). From 2006 to 2014, 45 patients with central nervous system malignancies were treated with HT-CSI. The most common tumors were medulloblastoma in 20 patients, ependymoma in 10 patients, intracranial germinoma (ICG) in 7 patients, and primitive neuroectodermal tumor in 4 patients. Hematological toxicity during treatment included leukopenia Grades 1-4 (6...
January 17, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28093345/stereotactic-radiosurgery-srs-for-melanoma-brain-metastases-a-comprehensive-clinical-case-series
#8
Rui Feng, Eric K Oermann, Raj Shrivastava, Ariel Gold, Brian T Collins, Douglas Kondziolka, Sean P Collins
BACKGROUND: Melanoma has high propensity to metastasize to the brain. With recent gains in improving patient survival, stereotactic radiosurgery may offer an effective and less neurotoxic alternative to whole brain radiation. In the study, we report on the safety and efficacy of stereotactic radiosurgery (SRS) in treating melanoma brain metastases in 87 patients. METHODS: This retrospective, multicenter study examined 87 patients with 309 metastases underwent single-dose or multifractionated SRS for treatment of intracranial metastases from malignant melanoma...
January 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28093344/unusual-intracerebral-presentation-of-a-myxoid-neurofibroma-a-case-report
#9
Marcos Devanir Silva da Costa, Karina Hoshino, João Norberto Stavale, Oreste Paulo Lanzoni, Sergio Cavalheiro, Manoel Antonio Paiva Neto
BACKGROUND: Neurofibromas are benign nerve sheath tumors that usually affect peripheral nerves and are related to Neurofibromatosis type 1; however, they have not been described as a cause of intraparenchymal brain tumor. CASE DESCRIPTION: We report a case of intracranial myxoid neurofibroma in a 19-year-old female patient manifested as an intense and progressive cephalea, followed by nausea, vomiting, and photo- and phonophobia. Computerized tomography and magnetic resonance imaging showed an extent expansive left frontoparietal parafalcine/parasagittal tumor...
January 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28092970/surgery-of-anterior-skull-base-lesions-in-children
#10
Thomas Karl Hoffmann, Marc Oliver Scheithauer, Fabian Sommer, Jörg Lindemann, Ernst-Johannes Haberl, Ulrike Friebe-Hoffmann, Marie-Nicole Theodoraki
INTRODUCTION: Lesions affecting the anterior skull base represent a rare group of craniofacial pathologies. A tumor of the facial midline, meningitis, or rhinoliquorrhea may be indicative of malformations like dermoid cysts, gliomas, encephaloceles, or nasal fistulas. METHODS: We present a case series of 13 children (4 months to 12 years; 8 males, 5 females) with lesions involving the anterior skull base, which were treated surgically in an interdisciplinary setting...
January 1, 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/28091817/teratomas-of-the-cranial-vault-a-systematic-analysis-of-clinical-outcomes-stratified-by-histopathological-subtypes
#11
Carlito Lagman, Timothy T Bui, Brittany L Voth, Lawrance K Chung, David J Seo, Courtney Duong, Mark R Libowitz, Naomi E Walker, Daniel T Nagasawa, Isaac Yang
BACKGROUND: Teratomas of the cranial vault are divided into histopathological subtypes and grouped by prognoses: mature (good prognosis), mixed/malignant and immature teratomas (intermediate prognosis). This schema also includes non-teratomatous tumors. The authors of this study sought to elucidate histologically dependent predictors of survival and further clarify the classification system of intracranial teratomas. METHODS: We performed a systematic analysis of the published literature to identify studies describing patients with intracranial teratomas diagnosed with magnetic resonance imaging (MRI) and presenting definite information on histologies, therapies, and outcomes at a minimum follow-up of 2 years...
January 14, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28090682/pituitary-macrotumor-causing-narcolepsy-cataplexy-in-a-dachshund
#12
S Schmid, A Hodshon, S Olin, I Pfeiffer, S Hecht
Familial narcolepsy secondary to breed-specific mutations in the hypocretin receptor 2 gene and sporadic narcolepsy associated with hypocretin ligand deficiencies occur in dogs. In this report, a pituitary mass is described as a unique cause of narcolepsy-cataplexy in a dog. A 6-year-old male neutered Dachshund had presented for acute onset of feeding-induced cataplexy and was found to have a pituitary macrotumor on magnetic resonance imaging (MRI). Cerebral spinal fluid hypocretin-1 levels were normal, indicating that tumor effect on the ventral lateral nucleus of the hypothalamus was not the cause of the dog's narcolepsy-cataplexy...
January 15, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28089483/patterns-of-failure-after-radiotherapy-for-pediatric-patients-with-intracranial-ependymoma
#13
Fatima Tensaouti, Anne Ducassou, Léonor Chaltiel, Stéphanie Bolle, Xavier Muracciole, Bernard Coche-Dequeant, Claire Alapetite, Valérie Bernier, Line Claude, Stéphane Supiot, Aymeri Huchet, Christine Kerr, Elisabeth le Prisé, Anne Laprie
PURPOSE: To investigate the patterns of failure after radiotherapy for pediatric intracranial ependymoma and their correlation with dose parameters. METHODS: Between 2000 and 2013, 206 patients were treated in France. MRI scans at relapse were registered to the original planning CTs for topographic analysis of failure patterns. To compare relapse patients (RP) with non relapse patients (NRP), several dose parameters were derived from dose volume histograms. RESULTS: Over a median follow-up of 53...
January 12, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28087981/humanized-chondroitinase-abc-sensitizes-glioblastoma-cells-to-temozolomide
#14
Alena Cristina Jaime-Ramirez, Nina Dmitrieva, Ji Young Yoo, Yeshavanth Banasavadi-Siddegowda, Jianying Zhang, Theresa Relation, Chelsea Bolyard-Blessing, Jeffrey Wojton, Balveen Kaur
INTRODUCTION: Malignant gliomas (GBMs) are extremely aggressive and have a median survival of approximately 15 months. Current treatment modalities, which include surgical resection, radiation and chemotherapy, have done little to prolong the lives of GBM patients. Chondroitin sulfate proteoglycans (CSPG) are critical for cell-cell and cell-extra cellular matrix (ECM) interactions and are implicated in glioma growth and invasion. Chondroitinase (Chase) ABC is a bacterial enzyme that cleaves chondroitin sulfate disaccharide chains from CSPGs in the tumor ECM...
January 14, 2017: Journal of Gene Medicine
https://www.readbyqxmd.com/read/28081463/analysis-of-the-results-of-recurrent-intracranial-meningiomas-treated-with-re-radiosurgery
#15
Moinay Kim, Do Hee Lee, Hyun Jung Kim Rn, Young Hyun Cho, Jeong Hoon Kim, Do Hoon Kwon
OBJECTS: Meningioma is the most common intracranial neoplasm, comprising approximately 30% of all primary intracranial tumors (Claus et al., 2005) [1]. Treatment options include observation, microsurgical resection, stereotactic radiosurgery (SRS), and whole brain radiation therapy (WBRT). Gamma knife radiosurgery (GKRS) is a very effective treatment for intracranial meningiomas; previous studies showed the tumor control rate at 5-10 years of follow-up as 84.3%-100% in all cases (Feigl et al...
December 29, 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28078450/genome-wide-methylation-profiles-in-primary-intracranial-germ-cell-tumors-indicate-a-primordial-germ-cell-origin-for-germinomas
#16
Shintaro Fukushima, Satoshi Yamashita, Hisato Kobayashi, Hirokazu Takami, Kohei Fukuoka, Taishi Nakamura, Kai Yamasaki, Yuko Matsushita, Hiromi Nakamura, Yasushi Totoki, Mamoru Kato, Tomonari Suzuki, Kazuhiko Mishima, Takaaki Yanagisawa, Akitake Mukasa, Nobuhito Saito, Masayuki Kanamori, Toshihiro Kumabe, Teiji Tominaga, Motoo Nagane, Toshihiko Iuchi, Koji Yoshimoto, Masahiro Mizoguchi, Kaoru Tamura, Keiichi Sakai, Kazuhiko Sugiyama, Mitsutoshi Nakada, Kiyotaka Yokogami, Hideo Takeshima, Yonehiro Kanemura, Masahide Matsuda, Akira Matsumura, Kazuhiko Kurozumi, Keisuke Ueki, Masahiro Nonaka, Akio Asai, Nobutaka Kawahara, Yuichi Hirose, Tatusya Takayama, Yoichi Nakazato, Yoshitaka Narita, Tatsuhiro Shibata, Masao Matsutani, Toshikazu Ushijima, Ryo Nishikawa, Koichi Ichimura
Intracranial germ cell tumors (iGCTs) are the second most common brain tumors among children under 14 in Japan. The World Health Organization classification recognizes several subtypes of iGCTs, which are conventionally subclassified into pure germinoma or non-germinomatous GCTs. Recent exhaustive genomic studies showed that mutations of the genes involved in the MAPK and/or PI3K pathways are common in iGCTs; however, the mechanisms of how different subtypes develop, often as a mixed-GCT, are unknown. To elucidate the pathogenesis of iGCTs, we investigated 61 GCTs of various subtypes by genome-wide DNA methylation profiling...
January 11, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28070930/pituitary-adenoma-with-adipose-tissue-a-new-metaplastic-variant
#17
Chiara Caporalini, Anna Maria Buccoliero, Luigi Pansini, Selene Moscardi, Luca Novelli, Gianna Baroni, Lorenzo Bordi, Franco Ammannati, Gian Luigi Taddei
Pituitary adenomas are benign tumors representing approximately 15-20% of intracranial neoplasms. There have been few reports of metaplastic osseous transformation and about 60 cases of neuronal metaplasia in pituitary adenoma but adipose metaplasia has not been previously described in the English literature. Here we report a case of pituitary adenoma with metaplastic adipose tissue in a 58-year-old male patient. Histologically this case fulfilled the criteria of a non-functioning pituitary adenoma, and moreover a central area of adipose tissue, made by mature adipocytes, and many tumor cells, containing fat droplet were evident...
January 9, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28069038/motility-of-glioblastoma-cells-is-driven-by-netrin-1-induced-gain-of-stemness
#18
Irene Ylivinkka, Harri Sihto, Olli Tynninen, Yizhou Hu, Aki Laakso, Riku Kivisaari, Pirjo Laakkonen, Jorma Keski-Oja, Marko Hyytiäinen
BACKGROUND: Glioblastoma is an untreatable brain cancer. The tumors contain a population of stem-like cells which are highly invasive and resistant to therapies. These cells are the main reason for the lethality of glioblastoma. Extracellular guidance molecule netrin-1 promotes the invasiveness and survival of various cancer cell types. We have previously found that netrin-1 activates Notch signaling, and Notch signaling associates with cell stemness. Therefore, we have here investigated the effects of netrin-1 on glioblastoma pathogenesis and glioblastoma cell stemness...
January 9, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28068234/radiation-dose-dependent-hippocampal-atrophy-detected-with-longitudinal-volumetric-magnetic-resonance-imaging
#19
Tyler M Seibert, Roshan Karunamuni, Hauke Bartsch, Samar Kaifi, Anitha Priya Krishnan, Yoseph Dalia, Jeffrey Burkeen, Vyacheslav Murzin, Vitali Moiseenko, Joshua Kuperman, Nathan S White, James B Brewer, Nikdokht Farid, Carrie R McDonald, Jona A Hattangadi-Gluth
PURPOSE: After radiation therapy (RT) to the brain, patients often experience memory impairment, which may be partially mediated by damage to the hippocampus. Hippocampal sparing in RT planning is the subject of recent and ongoing clinical trials. Calculating appropriate hippocampal dose constraints would be improved by efficient in vivo measurements of hippocampal damage. In this study we sought to determine whether brain RT was associated with dose-dependent hippocampal atrophy. METHODS AND MATERIALS: Hippocampal volume was measured with magnetic resonance imaging (MRI) in 52 patients who underwent fractionated, partial brain RT for primary brain tumors...
February 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28061499/primary-intracranial-malignant-melanoma-with-extracranial-metastasis
#20
Kengo Hirota, Chika Yoshimura, Osami Kubo, Hidetoshi Kasuya
We report a case of primary intracranial malignant melanoma (PIMM) with extracranial metastases. The patient was an 82-year-old woman diagnosed with PIMM under the left cerebellar tentorium. We performed a tumor resection followed by gamma knife surgery. An magnetic resonance imaging at 11 months after surgery showed a local intracranial recurrence. At 12 months, vertebral metastasis was suspected, and 2-[fluorine-18]-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography (FDG-PET/CT) showed multiple extracranial metastases...
January 1, 2017: Journal of Korean Neurosurgical Society
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