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F Bompaire, L Zinchenko, M Lahutte, K Mokhtari, D Psimaras, C Gaultier, A Monjour, J-Y Delattre, D Ricard
BACKGROUND: Stroke-like migraine attacks after radiation therapy (SMART) syndrome is a rare complication of cerebral radiation therapy that usually presents>10 years after treatment as reversible paroxysmal episodes of neurological dysfunction associated with headaches. CASES: We report here on two cases of SMART syndrome in long-term survivors of high-grade glioma for whom neuropathological data were available. The course of the disease was unfavorable. Although the clinico-radiological picture of SMART syndrome clearly differs from classic cerebral radionecrosis, the gross neuropathological lesions observed in our two patients appeared to be similar to those described in focal radionecrosis...
December 2, 2016: Revue Neurologique
Matthias D Hofer, Joceline S Liu, Allen F Morey
Radiation therapy may result in urethral strictures from vascular damage. Most radiation-induced urethral strictures occur in the bulbomembranous junction, and urinary incontinence may result as a consequence of treatment. Radiation therapy may compromise reconstruction due to poor tissue healing and radionecrosis. Excision and primary anastomosis is the preferred urethroplasty technique for radiation-induced urethral stricture. Principles of posterior urethroplasty for trauma may be applied to the treatment of radiation-induced urethral strictures...
February 2017: Urologic Clinics of North America
Alberto Franzin, Pietro Panni, Giorgio Spatola, Antonella Del Vecchio, Alberto L Gallotti, Carmen R Gigliotti, Andrea Cavalli, Carmine A Donofrio, Pietro Mortini
OBJECTIVE There are few reported series regarding volume-staged Gamma Knife radiosurgery (GKRS) for the treatment of large, complex, cerebral arteriovenous malformations (AVMs). The object of this study was to report the results of using volume-staged Gamma Knife radiosurgery for patients affected by large and complex AVMs. METHODS Data from 20 patients with large AVMs were prospectively included in the authors' AVM database between 2004 and 2012. A staging strategy was used when treating lesion volumes larger than 10 cm(3)...
December 2016: Journal of Neurosurgery
Liuba Soldatova, Raewyn G Campbell, Ricardo L Carrau, Daniel M Prevedello, Paul Wakely, Bradley A Otto, Leo F Ditzel Filho
Objectives Sinonasal cancers with neuroendocrine features share similar clinical, radiological, and histopathological features; however, these tumors often exhibit varying degrees of aggressive behavior presenting significant treatment challenges. The objective of this study was to report our experience with these rare malignancies and to present a review of current literature. Methods Following institutional review board approval, the records of all patients with biopsy-proven sinonasal malignancies over a 5-year period were reviewed...
December 2016: Journal of Neurological Surgery. Part B, Skull Base
Julie Constanzo, Laurence Masson-Côté, Luc Tremblay, Jérémie P Fouquet, Philippe Sarret, Sameh Geha, Kevin Whittingstall, Benoit Paquette, Martin Lepage
PURPOSE: The radiation dose delivered to brain tumors is limited by the possibility to induce vascular damage and necrosis in surrounding healthy tissue. In the present study, we assessed the ability of MRI to monitor the cascade of events occurring in the healthy rat brain after stereotactic radiosurgery, which could be used to optimize the radiation treatment planning. METHODS: The primary somatosensory forelimb area (S1FL) and the primary motor cortex in the right hemisphere of Fischer rats (n = 6) were irradiated with a single dose of Gamma Knife radiation (Leksell Perfexion, Elekta AG, Stockholm, Sweden)...
November 10, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Tae-Hyung Kim, Tae Jin Yun, Chul-Kee Park, Tae Min Kim, Ji-Hoon Kim, Chul-Ho Sohn, Jae Kyung Won, Sung-Hye Park, Il Han Kim, Seung Hong Choi
Purpose was to assess predictive power for overall survival (OS) and diagnostic performance of combination of susceptibility-weighted MRI sequences (SWMRI) and dynamic susceptibility contrast (DSC) perfusion-weighted imaging (PWI) for differentiation of recurrence and radionecrosis in high-grade glioma (HGG). We enrolled 51 patients who underwent radiation therapy or gamma knife surgeryfollowed by resection for HGG and who developed new measurable enhancement more than six months after complete response. The lesions were confirmed as recurrence (n = 32) or radionecrosis (n = 19)...
November 3, 2016: Oncotarget
Nour Kibbi, Harriet Kluger
Melanoma is the malignancy with the highest rate of dissemination to the central nervous system once it metastasizes. Until recently, the prognosis of patients with melanoma brain metastases (MBM) was poor. In recent years, however, the prognosis has improved due to high-resolution imaging that facilitates early detection of small asymptomatic brain metastases and early intervention with local modalities such as stereotactic radiosurgery. More recently, a number of systemic therapies have been approved by the Food and Drug Administration for metastatic melanoma, resulting in improved survival for many MBM patients...
December 2016: Current Oncology Reports
Carsten Nieder, Nicolaus H Andratschke, Anca L Grosu
BACKGROUND: Historically, radiation oncologists have been cautious about re-irradiating brain tumors because of concerns about the risks of late central nervous system (CNS) toxicity, especially radionecrosis, that may occur several months to years following treatment. Today there are still limited prospective data addressing this approach. MATERIALS AND METHODS: Systematic review of published trials reporting clinical results after re-irradiation of patients with different types of brain tumors was performed...
October 2016: Anticancer Research
J Detsky, A Kapadia, J Conklin, G Stanisz, A Sahgal, C Heyn, H Soliman
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
P Tiwari, P Prasanna, L Wolansky, M Pinho, M Cohen, A P Nayate, A Gupta, G Singh, K J Hatanpaa, A Sloan, L Rogers, A Madabhushi
BACKGROUND AND PURPOSE: Despite availability of advanced imaging, distinguishing radiation necrosis from recurrent brain tumors noninvasively is a big challenge in neuro-oncology. Our aim was to determine the feasibility of radiomic (computer-extracted texture) features in differentiating radiation necrosis from recurrent brain tumors on routine MR imaging (gadolinium T1WI, T2WI, FLAIR). MATERIALS AND METHODS: A retrospective study of brain tumor MR imaging performed 9 months (or later) post-radiochemotherapy was performed from 2 institutions...
September 15, 2016: AJNR. American Journal of Neuroradiology
Catherine N Tchanque-Fossuo, Faranak Kamangar, Baran Ho, Shurong Chang, Sara E Dahle, Joshua M Schulman, R Rivkah Isseroff
Complications from radiation exposure during fluoroscopic guidance of cardiac catheterization may occur. With repeated procedures, the risk for cutaneous injuries increases. Herein, we describe a 59-year-old man with extensive coronary artery disease, who had undergone multiple revascularization procedures and developed a non-healing ulcer on his left inferior scapula. The patient's medical history, physical exam findings, and histopathology gave clues to a case of radiation-induced dermatitis and necrosis.
2016: Dermatology Online Journal
V Guimas, J Thariat, P Graff-Cailleau, P Boisselier, Y Pointreau, P Pommier, X Montbarbon, C Laude, S Racadot
Modern techniques such as intensity modulated radiation therapy (IMRT) have been proven to significantly decrease the dose delivered to the cochleovestibular apparatus, limiting consecutive toxicity especially for sensorineural hearing loss. However, recent data still report a 42% rate of radio-induced hypoacusia underscoring the need to protect the cochleovestibular apparatus. Due to the small size of the cochlea, a precise dose-volume analysis could not be performed, and recommendations only refer to the mean dose...
October 2016: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
I Hartig, I Matveeva, M Braun
Intra-articular radiation synovectomy is an established and well documented therapy in rheumatology. A rare side effect is necrosis of surrounding tissue caused by leakage of the radionuclide.We describe the case of a 34-year old patient with rheumatoid arthritis who developed skin necrosis 4 weeks after an intra-articular radiation synovectomy of the left wrist. When these lesions are recognized early surgical therapy or hyperbaric oxygen therapy can be initiated.
November 2016: Zeitschrift Für Rheumatologie
Jordi Remon, Cécile Le Péchoux, Caroline Caramella, Frederic Dhermain, Guillame Louvel, Jean-Charles Soria, Benjamin Besse
No abstract text is available yet for this article.
August 17, 2016: Journal of Thoracic Oncology
Faliang Gao, Yong Cui, Haihui Jiang, Dali Sui, Yonggang Wang, Zhongli Jiang, Jizong Zhao, Song Lin
Brain glioma is the most common primary intracranial tumor characterized by dismal prognosis and frequent recurrence, yet a real-time and reliable biological approach to monitor tumor response and progression is still lacking. Recently, few studies have reported that circulating tumor cells (CTCs) could be detected in glioblastoma multiform (GBM), providing the possibility of its application in brain glioma monitoring system. But its application limits still exist, because the detection rate of CTCs is still low and was exclusively limited to high- grade gliomas...
August 8, 2016: Oncotarget
J R Garcia, M Cozar, M Baquero, J M Fernández Barrionuevo, A Jaramillo, J Rubio, G Maida, M Soler, E Riera
OBJECTIVE: To evaluate the contribution of (11)C-Methionine PET in the early differentiation between tumour recurrence and radionecrosis in patients treated for a high grade glioma. METHOD: The study included 30 patients with glioma (III/IV grade) treated with surgery/radiotherapy/chemotherapy (5-8 months) and with an indeterminate MRI. All patients underwent a (11)C-Methione PET (within 15 days of MRI) and studies were visually analysed (intensity and morphology of uptake), quantified (SUV max/SUV mean background), and coregistered to MRI (3D-Flair)...
August 6, 2016: Revista Española de Medicina Nuclear e Imagen Molecular
Brandon S Imber, Ishan Kanungo, Steve Braunstein, Igor J Barani, Shannon E Fogh, Jean L Nakamura, Mitchel S Berger, Edward F Chang, Annette M Molinaro, Juan R Cabrera, Michael W McDermott, Penny K Sneed, Manish K Aghi
BACKGROUND: The role of stereotactic radiosurgery (SRS) for recurrent glioblastoma and the radionecrosis risk in this setting remain unclear. OBJECTIVE: To perform a large retrospective study to help inform proper indications, efficacy, and anticipated complications of SRS for recurrent glioblastoma. METHODS: We retrospectively analyzed patients who underwent Gamma Knife SRS between 1991 and 2013. We used the partitioning deletion/substitution/addition algorithm to identify potential predictor covariate cut points and Kaplan-Meier and proportional hazards modeling to identify factors associated with post-SRS and postdiagnosis survival...
July 13, 2016: Neurosurgery
Maria Jesus Lobón, Francisco Bautista, François Riet, Frederic Dhermain, Sandra Canale, Christelle Dufour, Thomas Blauwblomme, Michel Zerah, Kevin Beccaria, Christian Saint-Rose, Stephanie Puget, Christian Carrie, Eric Lartigau, Pierre-Yves Bondiau, Dominique Valteau-Couanet, Jacques Grill, Stephanie Bolle
BACKGROUND: Standard treatment for recurrent ependymomas is not defined. Re- irradiation has been proposed but its modalities and results are still to be explored. PATIENTS AND METHODS: From June 1994 to December 2013, 32 pediatric patients with ependymoma were re-irradiated for local (n = 15) or metastatic (n = 17) relapses. Files were reviewed retrospectively. RESULTS: Local relapses were treated with hypofractionated focal radiotherapy (hypoFFRT) (n = 8) or focal fractionated radiotherapy (FFRT) (n = 7)...
2016: SpringerPlus
Arun Chandran, Shubhabrata Biswas, James Leon Hartley, Hans Christean Nahser, Jeffrey Lancaster, Mani Puthuran
A bleeding vertebral artery pseudoaneurysm is a rare cause of haemoptysis. Pseudoaneurysm can arise due to radionecrosis from previous radiotherapy in the base of skull and neck region and may present with haemoptysis many years later. It is important to be aware of this entity in the work-up of haemoptysis, particularly in patients with previous base of skull and neck radiotherapy. Our patient was successfully treated with endovascular occlusion.
October 2016: Interventional Neuroradiology
Mark Amsbaugh, Jianmin Pan, Mehran B Yusuf, Anthony Dragun, Neal Dunlap, Timothy Guan, Warren Boling, Shesh Rai, Shiao Woo
BACKGROUND: Our aim was to identify a dose-volume response relationship for brain metastases treated with frameless stereotactic radiosurgery (SRS). METHODS: We reviewed patients who underwent frameless single-fraction linear accelerator SRS for brain metastases between 2007 and 2013 from an institutional database. Proportional hazards modeling was used to identify predictors of outcome. A ratio of maximum lesion dose per mm-diameter (Gy/mm) was constructed to establish a dose-volume relationship...
2016: Curēus
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