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Vascular malformations

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https://www.readbyqxmd.com/read/28106525/open-and-endovascular-treatment-of-spinal-dural-arteriovenous-fistulas-a-10-year-experience
#1
Matthew J Koch, Christopher J Stapleton, Pankaj K Agarwalla, Collin Torok, John H Shin, Jean-Valery Coumans, Lawrence F Borges, Christopher S Ogilvy, James D Rabinov, Aman B Patel
OBJECTIVE Vascular malformations of the spine represent rare clinical entities with profound neurological implications. Previously reported studies on management strategies for spinal dural arteriovenous fistulas (sDAVFs) appeared before the advent of modern liquid embolic agents. Authors of the present study review their institutional experience with endovascularly and surgically treated sDAVFs. METHODS The authors performed a retrospective, observational, single-center case series on sDAVFs treated with endovascular embolization, microsurgical occlusion, or both between 2004 and 2013...
January 20, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28106514/endonasal-management-of-pediatric-congenital-transsphenoidal-encephaloceles-nuances-of-a-modified-reconstruction-technique-technical-note-and-report-of-3-cases
#2
Mehdi Zeinalizadeh, Seyed Mousa Sadrehosseini, Zohreh Habibi, Farideh Nejat, Harley Brito da Silva, Harminder Singh
OBJECTIVE Congenital transsphenoidal encephaloceles are rare malformations, and their surgical treatment remains challenging. This paper reports 3 cases of transsphenoidal encephalocele in 8- to 24-month-old infants, who presented mainly with airway obstruction, respiratory distress, and failure to thrive. METHODS The authors discuss the surgical management of these lesions via a minimally invasive endoscopic endonasal approach, as compared with the traditional transcranial and transpalatal approaches. A unique endonasal management algorithm for these lesions is outlined...
January 20, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28104932/abdominal-lymphatic-malformation-spectrum-of-imaging-findings
#3
Anupam Lal, Pankaj Gupta, Manphool Singhal, Saroj K Sinha, Sadhana Lal, Surinder Rana, Niranjan Khandelwal
Lymphatic malformations are congenital vascular malformations with lymphatic differentiation. Although the most common locations for lymphatic malformation are the neck and axilla, they can occur at several locations in the body including the abdomen. The abdominal location is rather rare and accounts for approximately 5% of all lymphatic malformation. Abdominal lymphatic malformation can arise from mesentery, omentum, gastrointestinal tract, and retroperitoneum. Clinical presentation includes an abdominal lump, vague abdominal discomfort, and secondary complications including intestinal obstruction, volvulus, ischemia, and bleeding...
October 2016: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28104640/arterial-spin-labeling-to-discriminate-pediatric-cervicofacial-soft-tissue-vascular-anomalies
#4
G Boulouis, V Dangouloff-Ros, O Boccara, N Garabedian, V Soupre, A Picard, V Couloigner, N Boddaert, O Naggara, F Brunelle
BACKGROUND AND PURPOSE: Differentiating major subtypes of cervicofacial vascular lesions is crucial for appropriate management. The aim of our study was to evaluate the performance of an MR imaging arterial spin-labeling perfusion sequence in discriminating pediatric cervicofacial soft-tissue vascular anomalies. MATERIALS AND METHODS: We conducted a retrospective analysis of data from a prospectively maintained registry including pediatric patients at a tertiary pediatric center between January 2012 and January 2014...
January 19, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28104472/downregulation-of-mir-145-in-venous-malformations-its-association-with-disorganized-vessels-and-sclerotherapy
#5
Hou-Fu Xia, Jian-Gang Ren, Jun-Yi Zhu, Zi-Li Yu, Wei Zhang, Yan-Fang Sun, Yi-Fang Zhao, Gang Chen
Venous malformations (VMs) are characterized by ectatic and tortuous venous channels with decreased perivascular cell coverage. Recent studies have discovered that miR-145 plays a critical role in amounts of vascular diseases through regulating the differentiation and phenotype of vascular smooth muscle cells (VSMCs). However, the potential roles of miR-145 in VMs remain unknown. In this study, 21 samples of VMs without treatment history, and 10 samples of healthy donor skin, were collected to evaluate the expression level of TGF-β, miR-145, and α-SMA by immunohistochemistry, in situ hybridization, and real-time polymerase chain reaction (PCR)...
January 16, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28095300/knockdown-of-cxcl14-disrupts-neurovascular-patterning-during-ocular-development
#6
Ana F Ojeda, Ravi P Munjaal, Peter Y Lwigale
The C-X-C motif ligand 14 (CXCL14) is a recently discovered chemokine that is highly conserved in vertebrates and expressed in various embryonic and adult tissues. CXCL14 signaling has been implicated to function as an antiangiogenic and anticancer agent in adults. However, its function during development is unknown. We previously identified novel expression of CXCL14 mRNA in various ocular tissues during development. Here, we show that CXCL14 protein is expressed in the anterior eye at a critical time during neurovascular development and in the retina during neurogenesis...
January 14, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28094022/a-case-report-of-an-adolescent-with-cluster-headaches-following-neck-trauma-coincidence-or-trigger
#7
Agnieszka Biedroń, Marek Kaciński, Małgorzata Steczkowska, Anna Świerczyńska
Posttraumatic headaches usually have tension-type or migraine-like characteristics. A correlation between head trauma and cluster headaches (CH) has been previously reported. CH in children are rare and require thorough differential diagnosis. We present an original case of a 15-year-old boy with cluster headaches associated with allodynia probably evoked by a neck trauma. Severe headache attacks started one month after neck trauma. At the beginning clinical presentation of our patient's headaches was very misleading...
January 10, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28092114/sleep-disordered-breathing-in-pediatric-head-and-neck-vascular-malformations
#8
Megan L Durr, Anna K Meyer, Eric J Kezirian, Mark D Mamlouk, Ilona J Frieden, Kristina W Rosbe
OBJECTIVES: To determine the prevalence of sleep-disordered breathing (SDB) symptoms among children with head and neck vascular malformations and to compare obstructive sleep apnea (OSA)-18 scores between children with head and neck vascular malformations and children with non-head and neck vascular malformations. STUDY DESIGN: Retrospective cohort and prospective cross-sectional studies METHODS: Forty-three pediatric subjects with head and neck vascular malformations evaluated at a tertiary-care multidisciplinary vascular anomalies center were included in a retrospective cohort study...
January 16, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28079942/treatment-of-capillary-malformation-using-topical-timolol-combined-with-585-nm-pulsed-dye-laser-a-prospective-randomized-split-lesion-study
#9
Sang-Jin Cheon, Woo-Haing Shim, Gun-Wook Kim, Hoon-Soo Kim, Byung-Soo Kim, Moon-Bum Kim, Hyun-Chang Ko
Capillary malformation (CM) is a congenital vascular malformation characterized by the dilation of superficial dermal blood vessels.(1)  Currently, pulsed dye laser (PDL) is considered the gold standard for the treatment of CM.(1)  However, its use results in incomplete clearance despite multiple sessions and relapses during long-term follow-up.(1)  Alternative methods are needed to achieve improved therapeutic results. This article is protected by copyright. All rights reserved.
January 12, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28076021/radiologic-assessment-of-native-renal-vasculature-a-multimodality-review
#10
Sayf Al-Katib, Monisha Shetty, Syed Mohammad A Jafri, Syed Zafar H Jafri
A wide range of clinically important anatomic variants and pathologic conditions may affect the renal vasculature, and radiologists have a pivotal role in the diagnosis and management of these processes. Because many of these entities may not be suspected clinically, renal artery and vein assessment is an essential application of all imaging modalities. An understanding of the normal vascular anatomy is essential for recognizing clinically important anatomic variants. An understanding of the protocols used to optimize imaging modalities also is necessary...
January 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28064338/-unknown-title
#11
V J Lund, Y Darby, J Rimmer, M Amin, S Husain
INTRODUCTION: Hereditary haemorrhagic telangiectasia (HHT) is an autosomal dominant vascular disease characterized by recurrent epistaxis, mucocutaneous telangiectasia and visceral arteriovenous malformations. The nosebleeds can be life-threatening and in these circumstances, radical treatment is required. METHODS: Since 1994, closure of the nose has been undertaken to prevent severe nasal bleeding in patients meeting specific selection criteria. Outcome data collected on this cohort pre- and post-operatively is available for analysis...
January 8, 2017: Rhinology
https://www.readbyqxmd.com/read/28060116/angiokeratoma-of-tongue
#12
Satvinder S Bakshi
A 9 year old male presented with diffuse swelling on his tongue since childhood associated with intermittent bleeding. On examination there was multiple, sessile, firm, pinkish, erythematous, shiny papules on both dorsal and ventral surface of the tongue. Angiokeratomas are vascular malformations of capillaries characterized clinically by asymptomatic, solitary or multiple, keratotic papules or plaques, and histologically by benign vascular ectasia of the papillary dermis. Treatment usually consists of local excision and intralesional injection of steroids...
January 5, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28059677/hydrocephalus-in-a-patient-with-an-unruptured-pial-arteriovenous-fistula-hydrodynamic-considerations-endovascular-treatment-and-clinical-course
#13
Jesús A Morales-Gómez, Vicente V Garza-Oyervides, José A Arenas-Ruiz, Mariana Mercado-Flores, C Guillermo Elizondo-Riojas, Frederick A Boop, Ángel Martínez-Ponce de León
Intracranial pial arteriovenous fistulas, also known as nongalenic fistulas, are rare vascular malformations affecting predominantly the pediatric population. Hydrocephalus is an unusual presentation in which the exact pathophysiology is not fully understood. The aim of treatment in these cases is occlusion of the fistula prior to considering ventricular shunting. Here, the authors describe the hydrodynamic considerations of the paravascular pathway and the resolution of hydrocephalus with endovascular treatment of the fistula...
January 6, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28054837/radiosurgery-alters-the-endothelial-surface-proteome-externalized-intracellular-molecules-as-potential-vascular-targets-in-irradiated-brain-arteriovenous-malformations
#14
Lucinda S McRobb, Vivienne S Lee, Margaret Simonian, Zhenjun Zhao, Santhosh George Thomas, Markus Wiedmann, Jude V Amal Raj, Michael Grace, Vaughan Moutrie, Matthew J McKay, Mark P Molloy, Marcus A Stoodley
Stereotactic radiosurgery (SRS) is an established treatment for brain arteriovenous malformations (AVMs) that drives blood vessel closure through cellular proliferation, thrombosis and fibrosis, but is limited by a delay to occlusion of 2-3 years and a maximum treatable size of 3 cm. In this current study we used SRS as a priming tool to elicit novel protein expression on the endothelium of irradiated AVM vessels, and these proteins were then targeted with prothrombotic conjugates to induce rapid thrombosis and vessel closure...
January 5, 2017: Radiation Research
https://www.readbyqxmd.com/read/28054281/a-case-of-diffuse-cavernous-hemangioma-of-the-appendix-laparoscopic-surgery-can-facilitate-diagnosis-and-treatment
#15
Chisato Takagi, Kazuo Yamafuji, Hidena Takahashi, Atsunori Asami, Kaoru Takeshima, Hideo Baba, Nobuhiko Okamoto, Kiyoshi Kubochi
BACKGROUND: A cavenous hemangioma of the appendix (CHA) is rare. The clinical pathophysiology and adequate management of a CHA have not been sufficiently explained since reports on CHA are scarce. CASE PRESENTATION: A 56-year-old woman presented with chronic right lower quadrant pain. Abdominal contrast-enhanced computed tomography revealed a thickened appendix (1.5 cm in diameter) and some focal calcifications in the appendiceal wall. No acute inflammatory signs were visible around the appendix...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28050516/high-flow-av-malformation-a-v-shunt-of-mandible-a-rare-life-threatening-entity
#16
Sanat Kumar Bhuyan, Krishna Gopal Birmiwal, Indu Bhusan Kar, Ruchi Bhuyan, Priyanka Debta
Intraosseous Arteriovenous Malformations (AVMs) in the head and neck region are very rare and potentially life threatening entities due to massive hemorrhage. These are the results of an embryonic abnormality of the vascular system. Depending on the blood flow and clinical presentations they are of different types like slow flow and high flow AVM. Here we present a case of high flow AVM involving mandible with a chief complain of gingival bleeding in a four year old girl child.
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28050436/symptomatic-granuloma-secondary-to-embolic-agent-a-case-report
#17
Prashant Gunawat, Salman Tehran Shaikh, Vikram Karmarkar, Chandrashekhar Deopujari
Onyx is a liquid embolic agent presently gaining wide acceptance for embolisation of multiple vascular cranial pathologies like Arteriovenous Malformation (AVM) and Arteriovenous Fistula (AVF). Onyx stays in the nidus of vascular pathology and initiates inflammatory response leading to thrombosis and subsequently resulting in occlusion of vascular nidus. However, if onyx spills into the surrounding brain tissue, reaction occurs in the form of foreign body inflammatory reaction. This is one of the very few cases in literature whereby embolisation of AVM with onyx lead to granuloma formation which needed surgical excision...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28045420/a-case-of-tracheal-bronchus-associated-with-right-aortic-arch-and-partial-anomalous-pulmonary-venous-connection
#18
Vehbi Doğan, İlker Ertuğrul, Yasemin Taşcı Yıldız, Utku Arman Örün, Selmin Karademir
Tracheal bronchus includes a variety of bronchial anomalies arising in the trachea or main bronchus and directed toward the upper-lobe territory. Reported incidence varies from 1-3% in the pediatric population. It is generally associated with other congenital malformations, including costovertebral anomalies, congenital airway and lung anomalies, vascular anomalies, and congenital heart defects. Presently described was the case of a 14-year-old female with tracheal right-upper-lobe bronchus, right aortic arch with mirror image, and abnormal left upper pulmonary venous return to innominate vein...
December 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28040119/are-congenital-malformations-more-frequent-in-fetuses-with-intrahepatic-persistent-right-umbilical-vein-a-comparative-study
#19
Ignacio Adiego-Calvo, Ricardo Saviron-Cornudella, Cristina Martinez-Payo, Encarna Rubio-Aranda, Javier Sancho-Sauco, Ana Isabel Cisneros-Gimeno, Pilar Perez-Perez, Diego Lerma-Puertas, Jaime Whyte-Orozco
OBJECTIVE: Persistent right umbilical vein (PRUV) is a vascular anomaly where the right umbilical vein remains as the only conduit that returns oxygenated blood to the fetus. It has classically been described as associated with numerous defects. We distinguish the intrahepatic variant (better prognosis) and the extrahepatic variant (associated with worse prognosis). The objective of this study was to compare rates of congenital malformations in fetuses with intrahepatic PRUV (I-PRUV) versus singleton pregnancies without risk factors...
December 2016: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28034921/matrix-stiffening-promotes-a-tumor-vasculature-phenotype
#20
Francois Bordeleau, Brooke N Mason, Emmanuel Macklin Lollis, Michael Mazzola, Matthew R Zanotelli, Sahana Somasegar, Joseph P Califano, Christine Montague, Danielle J LaValley, John Huynh, Nuria Mencia-Trinchant, Yashira L Negrón Abril, Duane C Hassane, Lawrence J Bonassar, Jonathan T Butcher, Robert S Weiss, Cynthia A Reinhart-King
Tumor microvasculature tends to be malformed, more permeable, and more tortuous than vessels in healthy tissue, effects that have been largely attributed to up-regulated VEGF expression. However, tumor tissue tends to stiffen during solid tumor progression, and tissue stiffness is known to alter cell behaviors including proliferation, migration, and cell-cell adhesion, which are all requisite for angiogenesis. Using in vitro, in vivo, and ex ovo models, we investigated the effects of matrix stiffness on vessel growth and integrity during angiogenesis...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
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