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Malformation vascular

Dale Ding, Zhiyuan Xu, Han-Hsun Shih, Robert M Starke, Chun-Po Yen, Or Cohen-Inbar, Jason P Sheehan
BACKGROUND: Incompletely obliterated cerebral arteriovenous malformations (AVMs) after initial treatment with stereotactic radiosurgery (SRS) can be treated with a repeat session of SRS. However, the relative efficacy of repeat vs initial SRS is not well specified. OBJECTIVE: To retrospectively compare in matched cohorts the outcomes of repeat vs initial SRS for the treatment of matched cohorts with angioarchitecturally similar AVMs. METHODS: We studied a data set of patients with AVM treated with radiosurgery during the period spanning 1989 to 2013...
November 2016: Neurosurgery
Mohammad Jafarian, Nima Dehghani, Shahin Shams, Mohammad Esmaeelinejad, Farzad Aghdashi
Arteriovenous malformations are uncommon congenital disorders in vascular development. They frequently involve craniofacial structures and result in a morphogenic abnormality with ominous arteriovenous shunting. We present a huge AVM of the upper lip in an 18-year-old patient who was successfully treated by the combination method of presurgical endovascular embolization and complete resection of the lesion. Subsequent surgical defect in upper lip, which involved more than two-third of the lip length, was reconstructed via Webster's modification of cheek advancement flap...
September 2016: Journal of Maxillofacial and Oral Surgery
Snehal R Patel, Shivank Madan, Omar Saeed, Mohammed Algodi, Anne Luke, Marc Gibber, Daniel J Goldstein, Ulrich P Jorde
OBJECTIVES: This study sought to determine whether the nasal mucosa can serve as a surrogate for evaluating arteriovenous malformations (AVMs) related gastrointestinal (GI) bleeding in patients supported by continuous flow left ventricular assist devices (CF LVADs). BACKGROUND: Bleeding from the mucosal surfaces of GI tract, particularly AVMs, is the most common complication of CF LVAD support. The pathophysiology of AVM formation during CF LVAD support is of critical interest yet poorly understood; in large part because of the length and accessibility of the GI tract...
September 29, 2016: JACC. Heart Failure
Samuel Lapalme-Remis, Gregory D Cascino
PURPOSE OF REVIEW: This article discusses structural and functional neuroimaging findings in patients with seizures and epilepsy. The indications for neuroimaging in these patients and the potential diagnostic utility of these studies are presented. RECENT FINDINGS: Patients presenting with new seizures typically require urgent imaging to rule out a critical underlying cause. MRI is the structural neuroimaging procedure of choice in individuals with epilepsy. Specific epilepsy protocols should be considered to increase the diagnostic yield of neuroimaging in patients with structural lesions associated with focal or generalized seizures...
October 2016: Continuum: Lifelong Learning in Neurology
Jason M Davies, Michael T Lawton
OBJECTIVE Treatment of cerebrovascular malformations has grown in complexity with the development of multimodal approaches, including microsurgery, endovascular treatments, and radiosurgery. In spite of this changing standard of care, the provision of care continues across a variety of settings. The authors sought to determine the risk of adverse outcome after treatment of patients with vascular malformations in the US. Patient, surgeon, and hospital characteristics, including volume, were tested as potential outcome predictors...
October 14, 2016: Journal of Neurosurgery
Concetta Scimone, Placido Bramanti, Alessia Ruggeri, Luigi Donato, Concetta Alafaci, Concetta Crisafulli, Massimo Mucciardi, Carmela Rinaldi, Antonina Sidoti, Rosalia D'Angelo
BACKGROUND: Cerebral cavernous malformations (CCMs) are vascular anomalies of the nervous system mostly located in the brain presenting sporadically or familial. Causes of familial forms are mutations in CCM1 (Krit1), CCM2 (MGC4607) and CCM3 (PDCD10) genes. Sporadic forms with no affected relative most often have only one lesion and no germ line mutations. However, a number of sporadic cases with multiple lesions have been reported and are indeed genetic cases with a de novo mutation or a mutation inherited from an asymptomatic parent...
October 13, 2016: BMC Medical Genetics
R Spreafico, L Sordo, R Bellotto, M Schipano, A Rescaldani, F Parmigiani
Arteriovenous malformation (AVM) of the head and neck is a rare and potentially life threatening entity due to massive haemorrhage. There are several indications for treatment, including age of the patient and location, extent and type of vascular malformation. Endovascular therapy can effectively cure most lesions with limited tissue involvement. Surgery can be used in selected cases in combination with embolization. Here we report the case of a young woman affected by a massive AVM on the left side of the mandible and submandibular region, and also review the literature on AVM with special attention to treatment strategies...
August 2016: Acta Otorhinolaryngologica Italica
Mohammad R Boroumand, M Yashar S Kalani, Robert F Spetzler
CLOVES (congenital lipomatous overgrowth, vascular malformations, epidermal nevi, and scoliosis/skeletal/spinal anomalies) syndrome is a congenital and almost exclusively pediatric syndrome associated with vascular malformations of the neuroaxis. We report the case of a complex spinal arteriovenous fistula in an adult woman with CLOVES syndrome treated using a multidisciplinary approach with endovascular embolization and microsurgical technique, and review the medical literature on this disease.
October 8, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Beata Pucher, Jaroslaw Szydlowski, Wieslaw Smoczyk, Katarzyna Jonczyk-Potoczna, Michal Grzegorowski, Aleksandra Korytowska
Tonsillectomy and adenoidectomy are the most common surgical procedures in pediatric otolaryngology. The incidence of primary hemorrhage after tonsillectomy in children ranges from 0.38 to 6%. The prevalence of secondary bleeding occurs in 0.5%-9.3% cases [1]. Authors present a case of an 11-year-old girl who experienced 6 delayed, massive post-tonsillectomy bleedings as a result of presence of vascular malformation and the activation of collateral circulation as a result of the left ECA ligature.
November 2016: International Journal of Pediatric Otorhinolaryngology
Paloma Triana, Mariela Dore, Vanesa Nuñez Cerezo, Manuel Cervantes, Alejandra Vilanova Sánchez, Miriam Miguel Ferrero, Mercedes Díaz González, Juan Carlos Lopez-Gutierrez
Aim of the Study mTOR inhibitors are showing promising results in the management of vascular anomalies. Although current controlled trials remain to be completed, many individual experiences are being published. We present our series of children with complex vascular anomalies treated with sirolimus. Patients and Methods A retrospective review of 41 patients treated with sirolimus between January 2011 and December 2015 was performed: 15% (n = 6) had vascular tumors (4 kaposiform hemangioendotheliomas, 1 PTEN) and 85% (n = 35) had malformations (13 generalized lymphatic anomalies/Gorham-Stout diseases [GSD], 1 kaposiform lymphangiomatosis [KLA], 11 large lymphatic malformations (LMs) in critical areas, 2 lymphedemas, 4 venous malformations, and 4 aggressive arteriovenous malformations [AVM])...
October 10, 2016: European Journal of Pediatric Surgery
James Whitworth, Brian Stausbøl-Grøn, Anne-Bine Skytte
When faced with an unusual clinical feature in a patient with a Mendelian disorder, the clinician may entertain the possibilities of either the feature representing a novel manifestation of that disorder or the co-existence of a different inherited condition. Here we describe an individual with a submandibular oncocytoma, pulmonary bullae and renal cysts as well as multiple cerebral cavernous malformations and haemangiomas. Genetic investigations revealed constitutional mutations in FLCN, associated with Birt-Hogg-Dubé syndrome (BHD) and CCM2, associated with familial cerebral cavernous malformation...
October 8, 2016: Familial Cancer
Antonella Biasiotta, Daniela D'Arcangelo, Francesca Passarelli, Ezio Maria Nicodemi, Antonio Facchiano
BACKGROUND: Several cellular functions relate to ion-channels activity. Physiologically relevant chains of events leading to angiogenesis, cell cycle and different forms of cell death, require transmembrane voltage control. We hypothesized that the unordered angiogenesis occurring in solid cancers and vascular malformations might associate, at least in part, to ion-transport alteration. METHODS: The expression level of several ion-channels was analyzed in human solid tumor biopsies...
October 4, 2016: Journal of Translational Medicine
Hongzhi Xu, Zhiyong Qin, Ming Xu, Chunjui Chen, Junjie Zhang, Xiancheng Chen
BACKGROUND: Intraoperative ultrasound is widely used in neurosurgery for the management of intracerebral hematoma and brain tumor. However, the clinical value of this method in the surgery of cerebral arteriovenous malformations (AVMs) has not been reported. In this study, the application of intraoperative ultrasound for AVMs surgery was evaluated prospectively. METHODS: This prospective clinical study comprised of 41 patients who underwent microsurgical resection of cerebral AVMs at our institute...
October 3, 2016: World Neurosurgery
Shaode Yu, Shibin Wu, Zhicheng Zhang, Yili Chen, Yaoqin Xie
Blood vascular reconstruction plays an important role in vessel disease diagnosis and prognosis, treatment planning and surgery. Based on adjacent vector projection, a simple and robust explicit algorithm is presented for vascular reconstruction. It generates the base mesh and utilizes the Loop algorithm for perceptual refinement by mesh subdivision. In the end, the reconstructed vascular tree is rendered for volumetric visualization and localization of vascular malformations. Experimental results on the Aneurisk database have validated the capacity of the proposed algorithm in generating smooth surface and natural transition of high tortuosity in real time, while on clinical cases has verified its accuracy on pinning vascular stenosis...
September 2, 2016: Bioengineered
Wen-Qing Huang, Cong-Xia Lu, Ya Zhang, Ke-Hui Yi, Liang-Liang Cai, Ming-Li Li, Han Wang, Qing Lin, Chi-Meng Tzeng
Background: Cerebral cavernous malformations (CCMs) are common vascular malformations that predominantly arise in the central nervous system and are mainly characterized by enlarged vascular cavities without intervening brain parenchyma. Familial CCMs (FCCMs) is inherited in an autosomal dominant pattern with incomplete penetrance and variable symptoms. Methods: Mutations of three pathogenic genes, CCM1, CCM2, and CCM3, were investigated by direct DNA sequencing in a Chinese family with multiple CCM lesions...
2016: Frontiers in Aging Neuroscience
María Librada Porriño-Bustamante, José Aneiros-Fernández, Juan Antonio Retámero, María Antonia Fernández-Pugnaire
Hobnail hemangioma, also known as targetoid hemosiderotic hemangioma, is an uncommon vascular proliferation that clinically presents as a small solitary red to purple papule or macule, located on the limbs or trunk. Multiple lesions and atypical locations have been described. Histopathologically, it exhibits a biphasic pattern, with dilated vessels in the superficial dermis and angulated vessels in the deeper dermis, with endothelial cells that show a hobnail appearance. There is controversy about the histogenetic origin of hobnail hemangioma, although recent studies support that it is a lymphatic malformation...
October 5, 2016: Journal of Cutaneous Medicine and Surgery
Chih-Shin Lin, Yung-Song Lin, Bor-Shyh Lin, Ching-Feng Lien, Ching-Feng Liu
Arteriovenous malformation (AVM) is a structural vascular abnormality in which the arterial vasculature connects with the venous vasculature without capillary connections. AVM confined to the nasal cavity is considerably rare. Blurred vision can be one of the associated symptoms. A combined approach of complete surgical resection with prior superselective embolization is the treatment of choice. Following resection, the reconstruction of facial defects, particularly in the nasal area, is challenging. The present study reports the rare case of a patient with an AVM in the nasal cavity, in which embolization, resection and flap reconstruction were performed...
October 2016: Oncology Letters
Yu-Chen Ji, Yan Li, Jing-Xia Hu, Hong-Bo Zhang, Peng-Xiang Yan, Huan-Cong Zuo
Hemangioblastomas (HBMs) are highly vascular tumors of the central nervous system. Sporadic HBMs are nearly always solitary, and solitary HBMs are similar to intracranial arteriovenous malformations due to their highly vascular characteristics. However, to the best of our knowledge, cases of HBM in the cerebellum mimicking an aneurysm have never been reported in the literature. The present study reports a case of an HBM on the right cerebellar hemisphere mimicking an aneurysm, which originated from the right posterior inferior cerebellar artery, as determined using magnetic resonance angiography and digital subtraction angiography...
October 2016: Oncology Letters
Junhui Chen, Lei Chen, Chunlei Zhang, Jianqing He, Peipei Li, Jingxu Zhou, Jun Zhu, Yuhai Wang
Angiographically occult cerebrovascular malformation (AOVM) is a type of complex cerebrovascular malformation that is not visible on digital subtraction angiography (DSA). Vascular malformation coexisting with glioma is clinically rare, and glioma coexisting with AOVM is even more rare. To the best of our knowledge, the present study is the first to report glioma coexisting with AOVM in the literature. The present study reports a rare case of glioma coexisting with AOVM in a 30-year-old male patient. Computed tomography (CT) scan revealed calcification, hemorrhage and edema in the right frontal lobe...
October 2016: Oncology Letters
B K Kleinschmidt-DeMasters, Kevin O Lillehei
Radiation-induced vascular "malformations", designated cavernous hemangiomas/cavernomas ("RICHs"), are seldom biopsied and are usually diagnosed based on neuroimaging features. They are an increasingly recognized complication of both CNS external beam radiation therapy and stereotactic radiosurgery. We identified 13 patients with radiation-induced vascular "malformations" in our surgical neuropathology databases searched from 2000 to 2016; 4 had received their therapy during childhood; 5 had received radiosurgery...
September 30, 2016: Journal of Neuropathology and Experimental Neurology
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