11,805 results match your criteria artery unilateral

Establishment of a large animal model for research on transbronchial arterial intervention for lung cancer.

Diagn Interv Radiol 2021 Jul;27(4):476-481

Department of Interventional Radiology, Changzheng Hospital, the Second Military Medical University, Shanghai, China.

Purpose: We aimed to evaluate whether bronchial artery can supply a percutaneously inoculated canine transmissible venereal tumor (CTVT) in a lung tumor model.

Methods: Fresh CTVT tissue blocks were percutaneously inoculated into unilateral or bilateral lungs of six immunosuppressed dogs at the mid zone of the middle or lower lobe. Tumor growth was monitored by computed tomography (CT). Read More

View Article and Full-Text PDF

An Index from Transcranial Doppler Signals for Evaluation of Stroke Rehabilitation Using External Counterpulsation.

IEEE Trans Neural Syst Rehabil Eng 2021 Jul 26;PP. Epub 2021 Jul 26.

This study aimed to develop a sensitive index from transcranial Doppler (TCD) signals for quantitatively evaluating the effects of long-term external counterpulsation (ECP) treatment on stroke rehabilitation. We recruited 27 patients with unilateral ischemic stroke and a good acoustic window within 7 days of stroke onset. 15 of them received 35 daily 1-hour ECP treatment (ECP group) and the others underwent conventional therapy without ECP treatment (No-ECP group). Read More

View Article and Full-Text PDF

Effects of standing and walking training using a laser pointer based on stimulus-driven attention for behavioural outcome in spatial neglect: A single-case study.

Neuropsychol Rehabil 2021 Jul 26:1-15. Epub 2021 Jul 26.

Department of Rehabilitation, Saitama Medical University International Medical Centre, Saitama, Japan.

The therapy for unilateral spatial neglect (USN) is unclear. This case report investigated the effect of standing and walking training using a laser pointer based on stimulus-driven attention for USN. The patient was a right-handed 79-year-old man with cardiogenic cerebral embolism in the right middle and posterior cerebral arteries. Read More

View Article and Full-Text PDF

Acute ambient air pollution exposure and placental Doppler results in the NICHD fetal growth studies - Singleton cohort.

Environ Res 2021 Jul 21;202:111728. Epub 2021 Jul 21.

Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA; Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, USA. Electronic address:

Background: Increased placental vascular resistance is a proposed mechanism by which air pollution exposure during pregnancy lowers birth weight and increases pregnancy-induced hypertensive disorders.

Objective: To examine the impact of acute air pollution exposure during pregnancy on uterine and umbilical artery Doppler indicators of placental vascular resistance.

Methods: After a first ultrasound to confirm gestational age, 2562 pregnant women recruited in 12 clinics throughout the United States underwent up to five standardized ultrasounds with Doppler measurements. Read More

View Article and Full-Text PDF

Measurement of Cortical Atrophy and Its Correlation to Memory Impairment in Patients With Asymptomatic Carotid Artery Stenosis Based on VBM-DARTEL.

Front Aging Neurosci 2021 5;13:620763. Epub 2021 Jul 5.

Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.

Objective: Severe carotid artery stenosis (CAS) can lead to atrophy of gray matter (GM) and memory impairment; however, the underlying mechanism is unknown. Thus, we aimed to identify memory impairment and GM atrophy and explore the possible correlation between them in patients with asymptomatic severe CAS.

Methods: Twenty-four patients with asymptomatic severe CAS and 10 healthy controls completed the mini-mental state examination (MMSE) and clinical memory scale (CMS) and underwent 7T magnetic resonance imaging (MRI) scan. Read More

View Article and Full-Text PDF

Combined Central Retinal Arterial and Venous Occlusions due to Leukemic Infiltration.

Retin Cases Brief Rep 2021 Sep 19. Epub 2021 Sep 19.

Department of Ophthalmology, Antwerp University Hospital, Edegem, Belgium Department of Pathology, Antwerp University Hospital, Edegem, Belgium Department of Radiology, Antwerp University Hospital, Edegem, Belgium Faculty of Health Sciences, University of Antwerp, Edegem, Belgium Name and address for correspondence: Vincent M. De La Porte, M.D. E-mail: Telephone: +32 3 821 4428, Address: Department of Ophthalmology, Antwerp University Hospital, 2650 Edegem, Belgium.

Purpose: To report combined central arterial and venous occlusions secondary to bilateral leukemic interfascicular optic nerve infiltration in a 56-year-old man. This was the sole presentation of a relapse in T/Myeloid mixed-phenotype acute leukemia after 5 months of remission.

Methods: Case report with clinical photography. Read More

View Article and Full-Text PDF
September 2021

Image-based patient-specific flow simulations are consistent with stroke in pediatric cerebrovascular disease.

Biomech Model Mechanobiol 2021 Jul 20. Epub 2021 Jul 20.

Translational Imaging Group, Texas Children's Hospital, Houston, TX, USA.

Moyamoya disease (MMD) is characterized by narrowing of the distal internal carotid artery and the circle of Willis (CoW) and leads to recurring ischemic and hemorrhagic stroke. A retrospective review of data from 50 pediatric MMD patients revealed that among the 24 who had a unilateral stroke and were surgically treated, 11 (45.8%) had a subsequent, contralateral stroke. Read More

View Article and Full-Text PDF

Ischaemic monomelic neuropathy: A rare cause of unilateral foot drop.

J Clin Neurosci 2021 Aug 23;90:36-38. Epub 2021 May 23.

Department of Neurosurgery, Royal Melbourne Hospital, 300 Grattan Street, Parkville, Victoria 3000, Australia; Department of Surgery, University of Melbourne, Parkville, VIC 3010, Australia. Electronic address:

Ischaemic neuropathy is a rare phenomenon given the rich arterial collateral supply afforded to peripheral nerves by the vasa nervorum. We report an unusual case of unilateral foot drop secondary to long-segment popliteal artery occlusion. Without expedient vessel imaging and revascularisation of the occluded artery, this reversible cause of neurological deficit would likely have resulted in a poor functional outcome for our patient. Read More

View Article and Full-Text PDF

Posterior Uveitis Associated with Large Vessel Giant Cell Arteritis.

Ocul Immunol Inflamm 2021 Jul 16:1-4. Epub 2021 Jul 16.

Byers Eye Institute, Stanford University, Palo Alto, California, USA.

: To report a case of acute unilateral posterior uveitis as a rare manifestation of giant cell arteritis (GCA).: A 62-year-old male presented to the clinic for evaluation of decreased vision in the right eye (OD). BCVA in OD was 20/60, and fundus examination revealed 3+ vitreous cells along with several inflammatory precipitates located in posterior vitreous and on surface of retina. Read More

View Article and Full-Text PDF

Posterior Lung Herniation in Pulmonary Agenesis and Aplasia: Chest Radiograph and Cross-Sectional Imaging Correlation.

Korean J Radiol 2021 Jul 1. Epub 2021 Jul 1.

Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.

Objective: To describe the anatomic locations and imaging features of posterior lung herniation in unilateral pulmonary agenesis and aplasia, focusing on radiograph-CT/MRI correlation.

Materials And Methods: A total of 10 patients (seven with pulmonary agenesis and three with pulmonary aplasia, male: female = 1:9, mean age 7.3 years, age range from 1 month to 20 years) were included. Read More

View Article and Full-Text PDF

Unilateral absence of pulmonary artery analysis based on echocardiographic feature.

Rev Cardiovasc Med 2021 Jun;22(2):483-488

Department of Ultrasound, Xijing hospital, Fourth Military Medical University, 710032 Xi'an, Shaanxi, China.

The unilateral absence of pulmonary artery (UAPA) is a rare congenital cardiovascular malformation, which is asymptomatic and easy to be ignored in early stage. A large number of complications may occur in the later stage. Therefore, early diagnosis and treatment is of great significance. Read More

View Article and Full-Text PDF

Addition of 5% CO2 to Inspiratory Gas Prevents Lung Injury in an Experimental Model of Pulmonary Artery Ligation.

Am J Respir Crit Care Med 2021 Jul 12. Epub 2021 Jul 12.

Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 9339, Department of Anesthesia, Critical Care and Emergency, Milan, Italy.

Rationale: Unilateral ligation of the pulmonary artery may induce lung injury through multiple mechanisms, which might be dampened by inhaled CO2.

Objectives: To characterize bilateral lung injury due to unilateral ligation of pulmonary artery in healthy swine undergoing controlled mechanical ventilation and its prevention by 5% CO2 inhalation. To investigate relevant pathophysiological mechanisms. Read More

View Article and Full-Text PDF

Letter-to-the Editor: Focal cerebral arteriopathy and acute ischaemic stroke in children: A diagnostic-therapeutical conundrum.

Eur J Radiol 2021 Jul 5;142:109846. Epub 2021 Jul 5.

Department of Neuroradiology, Città della Salute University Hospital, Torino, Italy.

Acute ischaemic stroke (AIS) in children is generally considered an up-to-date and controversial topic because its presents significant peculiarities. Focal cerebral arteriopathies (FCA) are a possible cause of AIS in children characterized by an unilateral lesion of the terminal internal cerebral artery (ICA) and proximal segment (M1) of middle cerebral artery (MCA), leading to subocclusion, occasionally with a typical "striate" pattern and a tendency to stability or regression at follow-up. It is unclear whether in FCA the basic lesion is an inflammatory or a dissective arterial pathology. Read More

View Article and Full-Text PDF

Responsiveness of afferent renal nerve units in renovascular hypertension in rats.

Pflugers Arch 2021 Jul 7. Epub 2021 Jul 7.

Department of Internal Medicine 4 - Nephrology and Hypertension, Friedrich-Alexander University Erlangen, Erlangen, Germany.

Previous data suggest that renal afferent nerve activity is increased in hypertension exerting sympathoexcitatory effects. Hence, we wanted to test the hypothesis that in renovascular hypertension, the activity of dorsal root ganglion (DRG) neurons with afferent projections from the kidneys is augmented depending on the degree of intrarenal inflammation. For comparison, a nonhypertensive model of mesangioproliferative nephritis was investigated. Read More

View Article and Full-Text PDF

Evaluation of Oropharyngeal Dysphagia in Elderly Patients with Pharyngeal Aberrant Internal Carotid Artery Using the Eating Assessment Tool-10 (EAT-10).

Dysphagia 2021 Jul 5. Epub 2021 Jul 5.

Department of Otorhinolaryngology, Baskent University Hospital, Fevzi Çakmak caddesi No 48, Çankaya, 06490, Ankara, Turkey.

Pharyngeal aberrant internal carotid artery (PAICA) has been reported to be a cause of oropharyngeal dysphagia (OD) in case reports. However, as there have been no clinical studies, the relationship between PAICA and OD is not clear. The aim of this study was to investigate the perception of OD in elderly PAICA patients using the Eating Assessment Tool-10 (EAT-10). Read More

View Article and Full-Text PDF

Pyk2 inhibition attenuates hypoxic-ischemic brain injury in neonatal mice.

Acta Pharmacol Sin 2021 Jul 5. Epub 2021 Jul 5.

State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China.

Newborns suffering from hypoxia-ischemia (HI) brain injury still lack effective treatment. Proline-rich tyrosine kinase 2 (Pyk2) is a non-receptor tyrosine kinase, which is highly correlated with transient ischemic brain injury in adult. In this study, we investigated the role of Pyk2 in neonatal HI brain injury. Read More

View Article and Full-Text PDF

Retinal dysfunction induced in a mouse model of unilateral common carotid artery occlusion.

PeerJ 2021 21;9:e11665. Epub 2021 Jun 21.

Laboratory of Photobiology, Keio University School of Medicine, Tokyo, Japan.

Background: Retinal ischemic stresses are associated with the pathogenesis of various retinal vascular diseases. To investigate pathological mechanisms of retinal ischemia, reproducible, robust and clinically significant experimental rodent models are highly needed. Previously, we established a stable murine model of chronic hypoperfusion retinal injuries by permanent unilateral common carotid artery occlusion (UCCAO) and demonstrated chronic pathological processes in the ischemic retina after the occlusion; however, retinal functional deficits and other acute retinal ischemic injuries by UCCAO still remain obscure. Read More

View Article and Full-Text PDF

Contralateral improvement of cerebrovascular reactivity and TIA frequency after unilateral revascularization surgery in moyamoya vasculopathy.

Neuroimage Clin 2021 21;30:102684. Epub 2021 Apr 21.

Department of Neurology and Neurosurgery, UMC Utrecht Brain Center, Utrecht, the Netherlands.

Objective: Moyamoya vasculopathy is a rare, often bilateral disease characterized by progressive stenosis and occlusion of the distal internal carotid artery, leading to a progressive deterioration of cerebrovascular reactivity (CVR) and increased risk of transient ischemic attacks (TIAs), infarction and hemorrhage. Surgical revascularization is a widely accepted symptomatic treatment, often performed bilaterally in one or two stages. To possibly further optimize treatment strategy, we investigated the effect of unilateral revascularization surgery on the CVR of, and TIA frequency originating from, the contralateral hemisphere. Read More

View Article and Full-Text PDF

[Pickering syndrome: acute heart failure with an unexpected actor].

Hipertens Riesgo Vasc 2021 Jun 28. Epub 2021 Jun 28.

Hospital Universitario Dr. Peset, Valencia, España.

Pickering's syndrome is a clinical entity described in 1988 that consists of the presentation of recurrent and predominantly nocturnal acute flash pulmonary oedema and arterial hypertension secondary to bilateral renal artery stenosis or unilateral in single-kidney patients. We describe the case of a 74-year-old man who, after percutaneous exclusion treatment of an aortic infrarenal aneurysm, developed Pickering syndrome due to haemodynamic obstruction of the left renal artery because of the aortic endoprosthesis; with satisfactory clinical evolution after revascularization. Read More

View Article and Full-Text PDF

May-Thurner syndrome: A cause of unexplained unilateral leg edema.

Clin Case Rep 2021 Jun 24;9(6):e04315. Epub 2021 Jun 24.

Department of General Medicine Saga University Hospital Saga Japan.

Physicians should be familiar with May-Thurner syndrome, characterized by the compression of the left common iliac vein by the right common iliac artery and the vertebral body, resulting in pain and swelling of the left lower extremity and DVT. A 64-year-old woman presented with unexplained edema in the left lower extremity. Computed tomography with contrast enhancement revealed that the left common iliac vein was compressed and narrowed by the right common iliac artery and the vertebral body, leading to the diagnosis of May-Thurner syndrome. Read More

View Article and Full-Text PDF

An unusual presentation of dysarthria in a young patient, a stroke mimic.

Acute Med 2021 ;20(2):140-143

MD (Damascus University), MSc in Clinical Dermatology (King's College London), MRCGP, General Practitioner Cambrian Medical Centre, Oswestry.

Internal carotid artery dissection commonly affects younger patients. We present a case of a previously fit and well 43-year-old gentleman who presented with a sudden onset of slurring of speech, with right-sided tongue deviation and fasciculation on examination. Signs and symptoms began following participation in a home workout class. Read More

View Article and Full-Text PDF

Arterial Thoracic Outlet Syndrome in a Runner.

Cureus 2021 May 25;13(5):e15225. Epub 2021 May 25.

Physical Medicine and Rehabilitation, Medical College of Wisconsin, Wauwatosa, USA.

Thoracic outlet syndrome (TOS) most commonly manifests in overhead athletes (e.g., baseball pitchers, swimmers, weight lifters) due to nerve compression caused by skeletal abnormalities. Read More

View Article and Full-Text PDF

Unusual Presentation of Presumed Arteritic Ischemic Optic Neuropathy in Waxy Pale Disc of Retinitis Pigmentosa.

Ophthalmic Surg Lasers Imaging Retina 2021 Jun 1;52(6):350-352. Epub 2021 Jun 1.

This case report describes an unusual presentation of arteritic anterior ischemic optic neuropathy (AAION) in a 68-year-old patient with retinitis pigmentosa (RP) secondary to Usher syndrome. The authors report a patient with RP who presented with rapid unilateral vision loss. A diagnosis of AAION was made by fluorescein angiography and temporal artery biopsy despite the lack of typical optic nerve features of anterior ischemic neuropathy, which were likely masked due to the waxy pale disc associated with RP. Read More

View Article and Full-Text PDF

Deep-inspiration breath hold radiotherapy in patients with left-sided breast cancer after partial mastectomy.

Rozhl Chir 2021 ;100(4):180-185

Introduction: The purpose of this study was to compare the radiation dose to organs at risk for deep-inspiration breath hold (DIBH) and free-breathing (FB) radiotherapy in patients with lef-sided breast cancer undergoing adjuvant radiotherapy after partial mastectomy.  Methods: One hundred patients with left-sided breast cancer underwent DIBH and FB planning computed tomography scans, and the 2 techniques were compared. Dose-volume histograms were analyzed for heart, left anterior descending coronary artery (LAD), and left lung. Read More

View Article and Full-Text PDF

A tricky case of unilateral orbital inflammation: carotid cavernous fistula in Graves-Basedow disease.

Rom J Ophthalmol 2021 Apr-Jun;65(2):201-203

Department of Ophthalmology, Virgen de las Nieves University Hospital, Granada, Spain.

To describe a rare clinical case of Carotid Cavernous Fistula (CCF) in Graves-Basedow disease (GBD). A 62-year-old female with history of GBD and inactive Graves' ophthalmopathy (GO) was admitted with progressive exophthalmos in her right eye (RE) and diagnosed with GO reactivation the previous month. On examination, dilated and tortuous conjunctival blood vessels, chemosis and exophthalmos were observed in the RE. Read More

View Article and Full-Text PDF

Prevalence of left iliac vein compression on computed tomography scans from a population.

J Vasc Bras 2020 Aug 31;19:e20190060. Epub 2020 Aug 31.

Instituto Vascular - INVASC, Passo Fundo, RS, Brazil.

Background: May-Thurner syndrome (MTS) is defined as compression of the left iliac vein between the right iliac artery and the lumbar vertebral body in the presence of signs and symptoms of unilateral left chronic venous insufficiency. However, imaging findings of compression are not manifest in symptoms of the syndrome in all subjects.

Objectives: To evaluate findings of compression in an asymptomatic population. Read More

View Article and Full-Text PDF

Freestyle aortic root prosthesis in combination with aortic replacement and open anastomosis: a retrospective analysis.

J Cardiothorac Surg 2021 Jun 26;16(1):185. Epub 2021 Jun 26.

Department of Cardiac Surgery, Triemli City hospital Zurich, Birmensdorferstrasse 497, 8063, Zurich, Switzerland.

Background: The Freestyle® bioprosthesis is used for pathologies of the aortic root. Additional resection of the ascending aorta and the proximal arch in dissections or aneurysms might be indicated. The aim was to assess mid-term outcome regarding prosthetic performance, stroke, reoperations, and survival in various pathologies comparing patients with and without additional procedures on the ascending aorta and proximal arch focusing on the standardised technique of unilateral antegrade cerebral perfusion under moderate hypothermia. Read More

View Article and Full-Text PDF

Diaphragm Sellae Meningioma: Distinct Clinical, Anatomic, and Surgical Considerations: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 Jun 25. Epub 2021 Jun 25.

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Nestled in the parasellar region, surrounded by critical neurovascular structures, diaphragm sellae meningiomas although rare present distinct clinical, radiological, and surgical considerations.1-3 Consequently, they present surgical challenges that could be overcome with technical nuances. The origin of this meningioma on the diaphragm creates a distorted anatomy, which must be comprehended for the safe approach and resection. Read More

View Article and Full-Text PDF

Variations in foramen transversarium of cervical spine: an osteological study in dried cervical vertebra of North Indian origin with its surgical importance.

Turk Neurosurg 2021 Jan 20. Epub 2021 Jan 20.

All India Institute of Medical Sciences, Department of Anatomy, Bathinda, India.

Aim: Foramina transversaria (FT) are located on the transverse process of cervical vertebrae. These foramina are known to exhibit variations with regard to shape, size and may even absent, incomplete or duplicated. The aim of this study was to investigate the variations in number, shape, size of foramina transversaria of the human cervical vertebrae and their clinical importance Material and Methods: 200 dry cervical vertebrae (C3-C7) of 40 spines were studied for the presence of variations in number, size and shape of the FT. Read More

View Article and Full-Text PDF
January 2021

[Analysis of cerebral perfusion of leptomeningeal branch and perforating branch of unilateral middle cerebral artery with severe stenosis or occlusion based on multi-delay arterial spin labeling].

Zhonghua Yi Xue Za Zhi 2021 Jun;101(23):1784-1790

Department of Radilolgy, China-Japan Friendship Clinical Medical College of Peking University, Beijing 100029, China.

To compare the cerebral perfusion differences between the symptomatic patients and the asymptomatic patients with unilateral middle cerebral artery (MCA) severe stenosis or occlusion by using three post labeling delays (PLD) of the three-dimensional pseudo-continuous arterial spin labeling (pCASL) technique. The clinical characteristics and ASL data of the 27 patients with severe stenosis or occlusion of unilateral MCA (18 symptomatic, 9 asymptomatic) were prospectively enrolled from April 2018 to November 2019 in the Department of Radiology of China-Japan Friendship Hospital. There were 16 males and 11 females, age range from 29 to 85 (55±13) years. Read More

View Article and Full-Text PDF