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Search Results: 1 - 10 of 7212 matches for " Internal Carotid Artery "
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Extracranial Internal Carotid Artery (ICA) Aneurysm Repair and End to End Anastamosis of the Artery  [PDF]
Murali Vettath, Madhu Ravisankar, Kannan Av, Nitin Gangadharan
World Journal of Cardiovascular Diseases (WJCD) , 2019, DOI: 10.4236/wjcd.2019.94025
Abstract: We present a case of extracranial internal carotid artery (ICA) aneurysm, which presented as an inflammatory submandibular swelling in the upper part of the right side of the neck. The lack of frank pulsatility and signs of inflammation though was a bit confusing, the Doppler and CT angiogram clinched the diagnosis. We were able to surgically resect and reform the ICA using the native vessel itself, which is an unusual technique, which we thought was worth presenting.
Aberrations of the Cervical Carotid Artery Which May Be Dangerous in Pharyngeal Surgery—A Computed Tomographic Study  [PDF]
Johannes Gossner, Ricarda Manka, Joerg Larsen
Advances in Computed Tomography (ACT) , 2013, DOI: 10.4236/act.2013.21006
Abstract:

Background: There are recognised variations in the anatomical course of the cervical portion of the internal carotid artery. An aberrant vessel with direct contact to the pharyngeal wall could easily be injured during pharyngeal surgery or may appear as a pharyngeal pseudo mass. Previous anatomical studies predominantly involved older patients. The prevalence of such variations which are at risk of injury during pharyngeal surgery has thus not been established in a general patient population. Material and Methods: The course of the internal carotid artery in relation to the oro and hypopharyngeal walls was retrospectively evaluated bilaterally by simple visual inspection and measurement of the smallest distance between the respective vessels and the adjacent mucosal surface of the pharyngeal wall in 138 consecutive contrast-enhanced computed tomography scans of the neck. Results: 11/138 (7.9%) of patients demonstrated relevant cervical carotid artery aberrations, comprising medial kinking of a vessel with asymmetry of the adjacent pharyngeal lumen and/or an intimate submucous course in the pharyngeal wall with no identifiable separating fat plane. This prevalence increased with age. Simple visual inspection correlated well with the measurement of the smallest distance between an artery and the pharyngeal wall, which was statistically significant (p < 0.0001). Conclusions: The prevalence of about 8% in a general patient population is higher than previously recorded in anatomical studies. Prevalence increases with age. Otorhinolaryngologists should be aware of such variation as a risk factor for haemorrhagic complications during pharyngeal surgery and as a differential diagnosis of pharyngeal mass lesions, especially in older patients. Modern contrast-enhanced CT allows identification and characterisation of any surgically relevant variant vascular anatomy in the pre-operative work-up.

Study of the relationship between sphenoid sinus volume and protrusions in the sphenoid sinus  [PDF]
Yuefeng Li, Jiaqi Sun, Xiwen Zhu, Chenhao Zhao, Jin Xu, Ping Jiang, Xinkang Tong
Forensic Medicine and Anatomy Research (FMAR) , 2014, DOI: 10.4236/fmar.2014.21002
Abstract: The relationship between the volume of sphenoid sinus (SS) and the prevalence of internal carotid artery (ICA) and optic nerve (ON) protrusions in the SS was studied by using high-resolution CT imaging. The ICA and ON protrusions in SS were observed in randomly selected normal head CT scanning images from 350 adult subjects. Ac-cording to the incidence of ICA protrusion, three groups were divided into no ICA protrusion (70.75%), unilateral protrusion (8.68%) and bi-lateral protrusions (20.57%). The ON protrusion accounted for 16% in 350 subjects and accom-panied absolutely with ICA protrusion, but ICA protrusion appeared without accompanying with ON protrusion. The SS volume depended upon the protrusions in it and showed statistical dif-ferences, without ICA protrusion, the smallest size (11.16 ± 1.60) cm3; the unilateral protrusion, medium size (14.20 ± 1.80) cm3 and the bilateral protrusion, the largest size (25.03 ± 2.21) cm3. By observing 3D reconstructed models of ON and SS, we found ON was adjacent to SS (46%) and to posterior ethmoid sinuses (44%). The current study indicates that SS volume is varied with numbers of the protrusions and that ON location varies with the pneumatization of SS. Our results provide an anatomical basis to the surgeries for SS and its surrounding structures.
Surgical anatomy of petrous part of the internal carotid artery
Keshelava G,Mikadze I,Abzianidze G,Kikalishvili L
Neuroanatomy , 2009,
Abstract: The purpose of this study was to reveal the anatomical relationships of petrous part of the internal carotidartery. Sixteen human cadavers were investigated via preauricular surgical approach (bilateral exposure oneach cadaver). A 6 cm long incision was made in front of the auricle, along the posterior border of the ramusof mandible, as higher as the level of the temporomandibular joint. After luxation of temporo-mandibulararticulation and milling of tympanic bone, vertical and horizontal segments of petrous part of the internalcarotid artery were exposed.The vertical segment’s mean length was 12 mm (ranged 10 mm to 15 mm). The relationships of the verticalsegment were the jugular fossa posteriorly, tympanic bone laterally, and Eustachian tube anteriorly. Horizontalsegment’s mean length was 20 mm (ranged 18 mm to 22 mm). Angle between vertical and horizontal segmentsof the petrous part of the internal carotid artery was measured 105° (ranged 95 to 110°).V, VII, IX, X, XII cranial nerves, internal jugular vein, and Eustachian tube are important structures, whichmust be protected during high carotid surgery.
Agenesia da artéria carótida interna: relato de caso
Neves, William da Silva;Kakudate, Milton Yochiharu;Cêntola, Crescêncio Pereira;Garzon, Raphael Gouveia;Po?a d'água, Américo;Sanches, Rafaelo;
Radiologia Brasileira , 2008, DOI: 10.1590/S0100-39842008000100015
Abstract: the present paper reports a case of a 14-year-old-female adolescent who presented a single episode of syncope, without any other symptom. axial and coronal t2-weighted magnetic resonance imaging demonstrated an absent right internal carotid artery flow void. a subsequent magnetic resonance angiography utilizing the time-of-flight technique showed absence of the right internal carotid artery. this finding was confirmed by magnetic resonance angiography of the cervical vessels, and axial computed tomography angiography showed agenesis of the right carotid canal. the literature reports such finding in association with other anomalies such as transsphenoidal encephaloceles and circle of willis aneurysms. these associations were not observed in the present case. the patient remained asymptomatic.
Hirudotherapy in the Treatment of Bilateral Internal Carotid Artery Occlusion: Case Report
Maria L. Pospelova,Oleg D. Barnaulov
Aktuelnosti iz Neurologije, Psihijatrije i Grani?nih Podru?ja , 2010,
Abstract: We present a case of a 67-year-old man, who had two ischemic strokes, fi rst with a right hemiparesis and sensory aphasia, second with signs of brain stem damage. Magnetic resonance angiography and ultrasonography confirmed bilateral occlusion of internal carotid arteries. Computed tomography revealed multiple ischemic lesions of the brain. Having had contraindications for aspirin due to duodenal ulcer, the patient was initially and aft erwards regularly treated with hirudotherapy. His general medical condition was later stable, while neurological deficit almost completely improved. During the eleven-year follow-up, the patient has had only one transient ischemic attack, otherwise without any complaints. Atherosclerotic changes have been stable, as well as the parameters of platelet function.
Retropharyngeal internal carotid artery: case report
Figueiredo, Ricardo Rodrigues,Azevedo, Andreia Aparecida de
International Archives of Otorhinolaryngology , 2009,
Abstract: Introduction: Variations to the course of carotid arteries may lead to abnormal pharyngeal protrusions, to which the otorhinolaryngologist should always attentive. Objective: To report a case of abnormal pharyngeal protrusion due to vascular anomaly in the course of the internal carotid artery, with literature review. Case Report: A 73- year-old woman complained of globus pharyngeus and intermittent dysphonia. A pulsating convexity was observed at the right part of the oropharynx, associated to laryngoscopic signals of pharyngo-laryngeal reflux. The pharyngeal computed tomography scan showed an abnormal tortuous internal carotid in the retropharyngeal space. The patient was sent to the vascular surgeon, who, after a normal blood flow finding at the Doppler, opted for an expectation conduct. The pharyngeal symptoms improved with the antireflux treatment. Final Comments: Internal carotid vascular anomalies must always be recalled in the pharyngeal wall convexity differential diagnosis.
Rupture of a True Aneurysm of the Posterior Meningeal Artery at Its Anomalous Origin from the Internal Carotid Artery: Case Report  [PDF]
Jawad Tadili, Nabil Moatassim Billah, Meryem Fikri, Moulay Rachid El Hassani, Ittimad Nassar, Ali Kettani, Mamoun Faroudi
Open Journal of Clinical Diagnostics (OJCD) , 2016, DOI: 10.4236/ojcd.2016.63007
Abstract: The posterior meningeal artery (PMA) usually originates from the third segment of the vertebral artery. Many variations in its origin and course have been observed; however, as far as we know, the association of true aneurysm of the PMA and its anomalous origin from the internal carotid artery has not been reported previously. We reported the case of a 59-year-old woman who suddenly presented a loss of consciousness without head trauma, computed tomography (CT) revelated intracerebellous hematoma associated with a subarachnoid hemorrhage of the posterior cerebral fossa. Cerebral angiography demonstrated a true aneurysm of the PMA which originated from the internal carotid artery.
Coronary Artery Bypass Grafting Combined with Total Occlusion of Internal Carotid Artery
Kyomars Abbasi,Shapour Shirani,Mohsen Fadaei Araghi,Abbasali Karimi
Journal of Tehran University Heart Center , 2008,
Abstract: Background: The presence of significant carotid stenosis in coronary artery bypass grafting (CABG) patients increases the risk of either transient ischemic attack or stroke. However, there is a dearth of data on the risk for patients with unilateral total occlusion of the carotid artery. We herein report our results of cardiac surgery in patients with unilateral total occlusion of the carotid artery. Methods: We examined 10,000 patients who underwent carotid artery duplex scanning before CABG or other cardiac procedures between January 2001 and September 2006 at Tehran Heart Center. The occlusions were detected via carotid Doppler screening and were confirmed through conventional or MR angiography. Among these patients, 15 (0.15%) patients had unilateral total occlusion of the internal carotid artery, and all of them underwent elective cardiac surgery. During cardiopulmonary bypass, the mean arterial pressure was maintained at above 60 mmHg with vasopressure drugs and increasing flow pump.Results: There were 4 patients with left and 11 patients with right carotid occlusions. Four patients had a history of cerebrovascular accident. The mean cross-clamp time (min) and perfusion time (min) was 50.7±17.3 and 94.2±26.7, respectively. The mean graft number was 4.1±0.9. One of these patients expired intraoperatively because of low cardiac output. In one (6.66%) patient, postoperative cerebrovascular accident occurred on the contralateral side of the totally occluded region. All the patients recovered uneventfully. Conclusion: Our results suggest that CABG can be performed in patients with unilateral total occlusion of the internal carotid artery without ipsilateral stroke using our strategies.
Dissec??o da artéria carótida
Chaves, Claudia;
Revista Brasileira de Cardiologia Invasiva , 2008, DOI: 10.1590/S2179-83972008000300018
Abstract: carotid artery dissections usually have a good prognosis and should be thought as a potential etiology of stroke and transient ischemic attacks (tias) in young patients. noninvasive imaging techniques, in particular magnetic resonance imaging (mri) (t1- and t2-weighted, fat-suppressed t1) and magnetic resonance angiography (mra) of head and neck with and/or without gadolinium, should be used routinely for screening of patients with internal carotid artery (ica) dissection. computed tomographic angiography (cta) can be an alternative or adjunctive diagnostic technique used for evaluation of dissection. conventional angiography should be reserved for selected cases where the diagnosis remains indeterminate after initial studies have been performed. further studies are necessary to evaluate the best therapeutic options for patients with arterial dissection.
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