Signs Of Dissection Research Articles

Incidental Finding of Subacute DeBakey Type II Aortic Dissection with Circular Intimal Tear in a Patient with Severe Aortic Insufficiency During the COVID-19 Pandemic

We present a case of severe aortic insufficiency diagnosed in the pandemic period with the surgery being postponed due to hygiene concerns and suspicion of COVID-19. One month later the patient’s complaints worsened. Renewed preoperative examinations revealed no difference and no sign of dissection. The suspicion of COVID-19 was eliminated, so immediate aortic valve surgery was performed despite the pandemic. Surprisingly subacute DeBakey type II aortic dissection with complete circular intimal tear came across intraoperatively. Thus, the modified Cabrol procedure was performed successfully. The diagnosis of aortic dissection may be missed, and this rate may increase in natural disasters such as pandemics and earthquakes.

Periaortic gas and signs of dissection of amycotic aneurysm in the descending thoracic aorta due to Clostridium septicum

The case of 92-year-old male with ahistory of sepsis due to Clostridium septicum is described. Since the bacteria were also found at the site of joint aspiration, the patient underwent knee prosthesis removal. Due to the association between colorectal cancer and Clostridium septicum, acolonoscopy was performed. An adenocarcinoma was extracted in situ. At 5months, the patient presented again with shortness of breath, acute retrosternal pain and fever. CT revealed amycotic aneurysm of the descending aorta with StanfordB dissection and periaortic gas. Due to the fragility of the patient, conservative treatment was initiated.

Spontaneous dissection of the carotid and vertebral arteries: features in the stroke subpopulation

Aim. To identify the characteristic features of patients after ischemic stroke (IS), probably associated with spontaneous dissection of the extracranial sections of carotid and vertebral arteries, and compare such patients with persons with IS of other genesis.Material and methods. The comparison group without signs of dissection included 1326 patients who had IS. The main group of patients with signs of dissection included 122 people aged 54,46±14,68 (21-84) years, 48 (39,3%) women and 74 (60,7%) men, among whom 106 people had IS. The dissection was determined by computed tomographic angiography and/or magnetic resonance angiography and/or duplex ultrasound.Results. Patients with dissection were significantly younger than those without it (p<0,001) and had a lower body mass index (BMI) (p<0,001). There was no relationship between the dissection location and sex and age (p>0,05). In the group with the same location of the infarction and dissection, adjusted for age, vertebrobasilar system involvement were more common (p=0,033), while the proportion of men was significantly higher (p=0,021), and the patients were significantly younger (p=0,027).Conclusion. Patients with dissection of the carotid and/or vertebral arteries were significantly younger than those without it. We found that in patients with dissection, BMI was significantly lower and depended on age, while in patients without dissections, BMI did not depend on age. A number of differences were identified in the group of patients with stroke likely associated with dissection, in comparison with those with strokes of another genesis.

The Right Time for Certification

The Right Time for Certification

P304 ACUTE ST–ELEVATION MYOCARDIAL INFARCTION DUE TO AORTIC DISSECTION: HISTORY OF A LATE DIAGNOSIS AFTER PRIMARY ANGIOPLASTY

Abstract Introduction We report a case of aortic type A dissection, involving the right coronary ostium, presented as an inferior STEMI. The aortic dissection diagnosis was formulated only after the coronary angioplasty on the right coronary was successfully done, leading to chest pain resolution. Dual antiplatelet therapy was administered. We want to underline how sometimes, mostly in emergencies, can be difficult to do the right diagnosis at the right time, even if some angiographic findings could help us to avoid life–threatening mistakes. Case presentation: 60 years–old man with typical angina chest pain started after an effort. The electrocardiogram showed ST elevation in inferior leads, while the echocardiogram akinesia of the inferior wall, a preserved EF, a normal diameter of the aortic root, no dissection signs, no pericardial effusion. The coronary angiography showed ostial RCA occlusion, critical stenosis in mid–distal LAD. Angioplasty on the RCA ostium with one drug–eluting stent (DES 3.5 x 18 mm) achieving reperfusion with TIMI 3 flow, complete resolution of ECG alteration and symptoms. Then PCI of LAD with DES was performed. During hospitalization in ICU recurrence of mild chest pain without ECG alterations. Routine echocardiogram performed the following day showed signs of aortic root dissection and moderate aortic valve regurgitation; an angio–CT scan was immediately performed confirming the aortic dissection, and cardiac surgery was immediately performed with good result. Reanalysis of the angiographic images showed some signs that should have made us think right away of an aortic dissection: abnormal convexity of the right coronary sinus, extravascular stagnation of contrast medium, and ostial RCA stent create a communication between the real and the false lumen, visible at the final injection. Conclusion Aortic root dissection, involving coronary ostium, could be a sneaky diagnosis since signs and symptoms could be very similar to myocardial infarction ones. A correct diagnosis is very important, leading to the right surgery treatment, the PCI and the dual antiplatelet therapy could lead to worsening outcomes. It is mandatory to pay attention to the signs that could help us doing the right diagnosis when we are performing coronary angiography. Always check the patient accurately during the ICU stay in order not to lose signs that can let us change the wrong to the correct diagnosis.

Features of Surgical Treatment of Symptomatic Patients with Isolated Superior Mesenteric Artery Dissection (Clinical Cases and Literature Review)

Introduction. Isolated superior mesenteric artery dissection (ISMAD) is a rare disease with high variability of clinical manifestations: from incidental findings to the development of acute or chronic mesenteric ischemia and the formation of aneurysms with the probability of their rupture. Despite significant world experience, surgical and conservative treatment of patients with ISMAD remains debatable.
 The aim. Improvement of the diagnosis and surgical treatment of patients with ISMAD.
 Clinical cases.
 In the first clinical observation, a 78-year-old patient with chronic visceral ischemia was diagnosed with an aneurysm of the upper mesenteric artery with signs of dissection and malperfusion. Previous unsuccessful attempts of endovascular treatment at another hospital caused the need for open surgical intervention – resection of the aneurysm and upper mesenteric artery reconstruction.
 
 In the second clinical case, a 61-year-old patient had acute abdominal pain syndrome, and based on clinical examination, laboratory and instrumental examination, the diagnosis of acute mesenteric ischemia with signs of dissection of the superior mesenteric artery was confirmed, which determined immediate indications for surgical treatment – resection of the affected segment of superior mesenteric artery and aorta-superior mesenteric bypass.
 
 The surgical interventions contributed to complete regression of clinical symptoms. Follow-up of the patients showed promising long-term results.
 
 Conclusion. Computed tomography angiography is the method of choice in the diagnosis of ISMAD and makes it possible to provide prompt diagnosis, determine treatment tactics and prevent the development of fatal complications. Open surgical intervention in some cases remains the method of choice in the treatment of ISMAD.

Three-Dimensional High-Resolution Magnetic Resonance Imaging for the Assessment of Cervical Artery Dissection.

Background and PurposeDiagnosing cervical artery dissection (CAD) is still a challenge based on the current radiographic criteria. This study aimed to assess the value of three-dimensional high-resolution magnetic resonance imaging (3D HRMRI) in the detection of the signs of CAD and its diagnosis.Materials and MethodsPatients with CAD from January 2016 to January 2021 were recruited from our 3D HRMRI database. The signs of dissection (intramural hematomas, intimal flap, double lumen), length and location of the dissection, thickness of the intramural hematoma, intraluminal thrombus, and percentage of dilation of the outer contour of the dissection on 3D HRMRI were assessed.ResultsFourteen patients with 16 CADs, including 12 carotid CADs and 4 vertebral CADs, were finally diagnosed in this study. On 3D HRMRI, intramural hematomas were detected in 13/16 (81.3%) lesions with high sensitivity (100%) and high specificity (100%). Intimal flaps were found in 9/16 (56.3%) lesions with moderate sensitivity (64.3%) and high specificity (88.9%). Double lumen signs were observed in 4/16 (25.0%) lesions with high sensitivity (80.0%) and high specificity (100%). In addition, concomitant intraluminal thrombus were detected in 4/16 (25.0%) lesions with high sensitivity (80.0%) and high specificity (100%). The mean length of dissection was (25.1 ± 13.7) mm. The mean thickness of the intramural hematoma was (4.3 ± 2.3) mm. The mean percentage of dilation for the outer contour of the dissection was (151.3 ± 28.6)%.ConclusionThe 3D HRMRI enables detection of the dissecting signs, such as intramural hematoma, intimal flap, double lumen, and intraluminal thrombus with high sensitivity and specificity, suggesting a useful, and non-invasive tool for definitively diagnosing CAD.

Dissecting aortic aneurysm after prosthetics of the bicuspid aortic valve

The article discusses the problems of bicuspid aortic valve and associated valvulo-aortopathy, including the principles of separate classifications, mechanisms and risk factors of aortic dilatation formation, indications for surgical treatment and type of surgery. A clinical case of the patient with L-R variant of the 1st type of this defect is presented. The valvular pathology she was diagnosed at the age of 24 and aortic valve replacement operation was performed at the age of 34 due to its severe insufficiency. Before the operation, the diameter of the ascending aorta was 4,8 cm, and after 7 years, control echocardiography showed pronounced dilatation of the ascending aorta with signs of dissection. This confirms the opinion about different mechanisms of the formation of this defect and related aortopathy and proves that the latter is caused not only by hemodynamic factors, as it progresses significantly after isolated aortic valve replacement, requiring repeated surgical intervention. An important predictor of aortic diameter growth is pronounced aortic insufficiency at baseline, and the risk factors are hypertension and smoking in past.

Diagnosis of fast-growing thoracic aneurysm with microscopic evidence of dissection over 6 months follow-up in an asymptomatic middle aged gentleman: a case report

BackgroundThoracic aortic aneurysm (TAA), is a pathological dilatation of the aortic segment with the tendency to expand, dissect or rupture, and risk of mortality. The progression rate is mainly slow. As the risk of rupture increases with the size of the aortic diameter, it is important to diagnose TAA appropriately to prevent mortality.Case presentationHere, we present a case with a fast-growing TAA, complicated by subclinical dissection in a middle-aged gentleman, associated with non-compaction left ventricle, diagnosed 6 months after the first diagnosis of this co-occurrence, successfully managed by an uneventful surgical procedure. The pathological examination was the key to the diagnosis of this concealed phenomenon, i.e. a fast-growing aortic aneurysm complicated by subclinical dissection.ConclusionThis case report emphasizes the importance of close follow-up of patients with fast-growing TAA for considering remote possibility of this silent life-threatening disease; subclinical dissecting aneurysm, especially in patients with other cardiac comorbidities. Although imaging modalities can help accurate diagnosis, in cases with fast-growing TAA, we should not wait for imaging signs of dissection and/or rupture.

Diagnostic Performance of High-Resolution Vessel Wall Magnetic Resonance Imaging and Digital Subtraction Angiography in Intracranial Vertebral Artery Dissection.

Purpose: Intracranial vertebral artery dissection (VAD) is being increasingly recognized as a leading cause of Wallenberg syndrome and subarachnoid hemorrhage. Conventional angiography is considered the standard diagnostic modality, but the diagnosis of VAD remains challenging. This study aimed to compare the diagnostic performance of high-resolution vessel wall imaging (HR-VWI) with digital subtraction angiography (DSA) for intracranial VAD. Materials and methods: Twenty-four patients with 27 VADs, who underwent both HR-VWI and DSA within 2 weeks, were consecutively enrolled in the study from March 2016 to September 2020. HR-VWI and DSA were performed to diagnose VAD and to categorize its angiographic features as either definite dissection or suspicious dissection. Features of HR-VWI were used to evaluate direct arterial wall imaging. The reference standard was set from the clinicoradiologic diagnosis. Two independent raters evaluated the angiographic features, dissection signs, and interrater agreement. Each subject was also dichotomized into two groups (suspicious or definite VAD) in each modality, and diagnosis from HR-VWI and DSA was compared with the final diagnosis by consensus. Results: HR-VWI had higher agreement (90.6% vs. 53.1%) with the final diagnosis and better interrater reliability (kappa value (κ) = 0.91; 95% confidence interval (CI) = 0.64–1.00) compared with DSA (κ = 0.58; 95% CI = 0.35–1.00). HR-VWI provided a more detailed identification of dissection signs (77.7% vs. 22.2%) and better reliability (κ = 0.88; 95% CI = 0.58–1.00 vs. κ = 0.75; 95% CI = 0.36–1.00), compared to DSA. HR-VWI was comparable to DSA for the depiction of angiographic features for VAD. Conclusions: HR-VWI may be useful to evaluate VAD, with better diagnostic confidence compared to DSA.

Spontaneous craniocervical dissection

Spontaneous craniocervical dissection is one of the main causes of stroke in juvenile and middle-aged patients. It is caused by intramural hematoma which may result in stenosis or even occlusion of the artery. Clinical manifestation varies from local pain to ischemic complications. The imaging modality of choice is magnetic resonance imaging (MRI) which is able to detect all characteristic signs of dissection. Intramural hematoma is detected with thin slice fat-saturated 3D black-blood images. However, with the use of special imaging techniques, questionable findings can be clarified and especially the more difficult to detect intradural dissection can be accurately diagnosed. Acute treatment depends on the severity of neurological symptoms and their duration. Factors like the location of the dissection, cerebral infarction or hemorrhage influence the choice of medication for primary and secondary prophylaxis. Resorption of the intramural hematoma often leads to spontaneous recanalization within afew months.

ARTERIAL HYPERTENSION REVEALING A TIGHT AORTIC COARCTATION IN A YOUNG PATIENT: ABOUT A CASE

Objective: Coarctation of the aorta is an obstructive lesion responsible for high blood pressure (hypertension). The diagnosis of coarctation is usually made during the first months of life but can be mentioned much later, especially when there is no other associated heart disease. Design and method: we report a case of a tight aortic coarctation in a young person revealed by arterial hypertension. Results: Mr K.H, 24 years old, with no notable pathological history, admitted for fever, cough and purulent sputum. At the examination the patient was polypneic, BP was 16/7, cardiac auscultation revealed a diastolic murmur to the aortic focus and reduced femoral pulses. Infectious endocarditis was suspected. Transesophageal ultrasound showed grade IV aortic insufficiency, aortic bicuspid, aneurysmal dilatation of the ascending aorta, and absence of endocardial adenoids. The thoracic angio scanner noted a short and tight stenosis of the aortic isthmus, a funnel dilation of the arch of the aorta with a significant aneurysmal dilation of the ascending aorta without signs of dissection, a focus of right lower lobar pneumonia. The diagnosis of hypertension secondary to coartation of the aorta was then retained. The patient was put on antibiotic therapy for his infectious lung disease, on antihypertensive treatment. Conclusions: This clinical fact underscores the importance of measuring blood pressure during any examination of a patient. Indeed, an isthmic coarctation can be easily ignored because, apart from hypertension, the damping of the femoral pulses is often the only clinical sign.

Localized Aortic Root Dissection Detected by Echocardiography: Series of Two Cases

Background: Computed Tomography Angiograph (CTA) is the golden standard for diagnosing aortic dissection (AD). However, echocardiography has some advantages over CTA in screening aortic root dissection. Objective: In this report, we present 2 cases of aortic root dissection not found by CTA but by echocardiography. Method: Two middle-aged male patients were admitted to our hospital due to similar symptoms of chest distress. Diastolic murmurs can be heard in the aortic valve second auscultation area. CTA showed aortic artifacts and no dissection signs. The preoperative echocardiography showed that the aortic root was dissected together with aortic valve, and then aortic regurgitation (AR) was formed during diastole. AD was considered. Result: The patients underwent Bentall operation with extracorporeal circulation through femoral arteriovenous cannula. extracorporeal circulation through femoral arteriovenous cannula. The patients were diagnosed as DeBakey type II AD with severe AR during operation. Both of them recovered and were discharged smoothly after the operation. Conclusions: The diagnostic significance of CTA may be limited in some localized aortic root dissections. At this point, we can improve the accuracy of the diagnosis by echocardiography.

Practical value of three-dimensional high resolution magnetic resonance Vessel Wall imaging in identifying suspicious intracranial vertebrobasilar dissecting aneurysms

BackgroundDirect evidence of intimal flaps, double lumen and intramural haematomas (IMH) is difficult to detect on conventional angiography in most intracranial vertebrobasilar dissecting aneurysms (VBDAs). Our purpose was to assess the value of three-dimensional high-resolution magnetic resonance vessel wall imaging (3D HRMR VWI) for identifying VBDAs.MethodsBetween August 2013 and January 2016, consecutive patients with suspicious VBDAs were prospectively enrolled to undergo catheter angiography and VWI (pre- and post-contrast). The lesion was diagnosed as definite VBDA when presenting direct signs of dissection; as possible when only presenting indirect signs; and as segmental ectasia when there was local dilation and wall thickness similar to adjacent normal artery’s without mural thrombosis.ResultsTwenty-one patients with 27 lesions suspicious for VBDAs were finally included. Based on findings of VWI and catheter angiography, definite VBDA was diagnosed in 25 and 7 lesions (92.6%, vs 25.9%, p < 0.001), respectively; possible VBDA in 0 and 20 (0 vs 74.1%), respectively; and segmental ectasia in 2 and 0 (7.4% vs 0%), respectively. On VWI and catheter angiography, intimal flap was detected in 21 and 7 lesions (77.8% vs 25.9%, p = 0.001), respectively; double lumen sign in 18 and 7 (66.7% vs 25.9%, p = 0.003), respectively; and IMH sign in 14 and 0 (51.9% vs 0), respectively.Conclusions3D HRMR VWI could detect direct dissection signs more frequently than catheter angiography. This may help obtain definite diagnosis of intracranial VBDAs, and allow accurate differentiation between dissecting aneurysm and segmental ectasia as well. Further prospective study with larger sample was required to investigate the superiority of HRMR VWI for definite diagnosis of intracranial VBDAs than catheter angiography.

Mechanical Thrombectomy Using Transradial Access in a Variation of the Origin of the Brachiocephalic Trunk and Left Common Carotid Artery by the Common Ostium from the Aortic Arch

The paper describes a clinical case of successfully applying a transradial access during mechanical thrombus extraction in a patient in the acutest stage of ischemic stroke with a congenital anatomical feature (the left common carotid artery and brachiocephalic trunk with the common ostium from the aortic arch).X-ray endovascular interventions were performed in an operating room equipped with a digital angiographic unit including an Axiom Artis dTA flat detector (Siemens Medical System).Mechanical recanalization for acute occlusion of the M2 segment of the left middle cerebral artery (MCA) was carried out using a right radial access into and catheterization of the left internal carotid artery. A stent retriever was inserted into the occlusion area through a microcatheter and was opened. Double thrombus extraction from the left MCA was made using the stent retriever to restore TICI 2B blood flow. There were no signs of dissection, thrombosis, or distal thromboembolism.

MON-915 Acute Abdominal Pain and the Pheochromocytoma

Background:Pheochromocytomas are neuroendocrine tumors that release large amounts of metanephrines and catecholamines, resulting in a wide array of symptoms including hypertension, diaphoresis, and headaches. If left unrecognized they can lead to serious morbidity including ischemic or hemorrhagic CVA, encephalopathy, MI, Aortic Dissection, and renal injury.Clinical Case:A 62-year-old male began having difficulties with his blood pressure over the past year. He was first hospitalized for an acute ischemic CVA with hypertensive urgency. His blood pressure was generally controlled throughout the admission but he continued to have intermittent elevations. After transferring to an inpatient rehabilitation unit he had an episode of acute nausea, severe lower abdominal pain, and emesis following dinner. He was tachycardic and hypertensive up to 190/115. Acute abdominal imaging revealed constipation but no obstruction. His symptoms resolved, returning a few hours later with another episode of acute nausea, vomiting, and severe lower abdominal pain, with blood pressure 210/126 and tachycardia. IV Metoprolol, Hydralazine and pain medications did not significantly improve his blood pressure, he was subsequently started on a Nitroglycerin drip. Abdominal workup was unremarkable, he was stabilized and discharged back to rehabilitation on increased oral medications. He continued to have blood pressure spikes up to 200/124 with nausea, vomiting, and severe abdominal pain until a Clonidine patch was started, after which his blood pressure was better controlled. He was discharged home with continued outpatient therapies.A few weeks later he returned to the ER with nausea and severe abdominal pain, blood pressure at home was 254/185. On exam he was diaphoretic, tachycardic, and tachypneic. A CTA scan was obtained without signs of dissection. A Nitro drip with IV push Hydralazine were not effective at controlling his blood pressure, and so Lisinopril, Amlodipine, and a Clonidine patch were added. Over the next few days he had progressively fewer hypertensive elevations and his symptoms were only present during hypertensive episodes. An extensive workup for secondary hypertension was started. 24-hour plasma and urine Metanephrines were within normal limits. Urine Normetanephrine was elevated to 1266 ug/24h (Ref 88-444). Urine Norepinephrine was elevated to 124 ug/24h (Ref 15-80), Urine Dopamine was elevated to 578 ug/24h (Ref 65-400), and total Catecholamines were elevated to 133 ug/24h (Ref 15-100).Conclusion:This case illustrates the variance in presentations for Pheochromocytoma and the importance of maintaining a high index of suspicion for secondary causes in patients with intractable hypertension. While commonly reported symptoms include nausea and hypertension, the presentation of acute abdominal pain as the primary complaint is also an important feature of this disease.

Misdiagnosis of Cervicocephalic Artery Dissection in the Emergency Department.

Background and Purpose- Cervicocephalic artery dissection is an important cause of stroke. The clinical presentation of dissection can resemble that of benign neurological conditions leading to delayed or missed diagnosis. Methods- We performed a retrospective cohort study using statewide administrative claims data from all Emergency Department visits and admissions at nonfederal hospitals in Florida from 2005 to 2015 and New York from 2006 to 2015. Using validated International Classification of Diseases, Ninth Revision, CM codes, we identified adult patients hospitalized for cervicocephalic artery dissection. We defined probable misdiagnosis of dissection as having an Emergency Department treat-and-release visit for symptoms or signs of dissection, including headache, neck pain, and focal neurological deficits in the 14 days before dissection diagnosis. Multivariable logistic regression was used to compare adverse clinical outcomes in patients with and without probable misdiagnosis. Results- Among 7090 patients diagnosed with a dissection (mean age 52.7 years, 44.9% women), 218 (3.1% [95% CI, 2.7%-3.5%]) had a preceding probable Emergency Department misdiagnosis. After adjustment for demographics and vascular risk factors, there were no differences in rates of stroke (odds ratio, 0.82 [95% CI, 0.62-1.09]) or in-hospital death (odds ratio, 0.26 [95% CI, 0.07-1.08]) between dissection patients with and without a probable misdiagnosis at index hospitalization. Conclusions- We found that ≈1 in 30 dissection patients was probably misdiagnosed in the 2 weeks before their diagnosis.

Experience of endovascular treatment of common femoral artery pseudoaneurysm with usage Angio-Seal Closure Device

One case of successful treatment of the common femoral artery pseudoaneurysm with usage of modified technique of pseudoaneurysm neck sealing with Angio-Seal with retrograde access percutaneously is presented.A 52-year-old man was admitted in the recovery period of ischemic stroke in the left carotid basin. A total subtraction cerebral angiography was performed, which revealed severe stenosis in the bulb of the left internal carotid artery with ulcerated contour and severe stenosis in the ostium of the left vertebral artery. Hemostasis was performed by compression. A pressure dressing was applied for a day. The puncture site was without any problems on the next day. The patient received double antiplatelet therapy 5 days before endovascular surgery. Before surgery, palpation in the right inguinal region determines a rounded painful compaction. Carotid stenting on the left side, stenting of the left vertebral artery and control angiography of arteries of the right lower limb were performed by left-side femoral access. Pseudoaneurysm in the bifurcation of the right common femoral artery with a narrow neck was verified. Attempts to cure it by manual compression under angiographic control and ultrasound control were unsuccessful.After 6 days, endovascular treatment of pseudoaneurysms of the right common femoral artery with closure of the pseudoaneurysm neck was performed. The right common femoral artery was catheterized with left radial access with diagnostic catheter on a hydrophilic wire 0.035ʺ. This wire was carefully advanced into pseudoaneurysm through a defect in the common femoral artery and subsequently served as a marker. The pseudoaneurysm was punctured with miniaccess needle, then the 0.018ʺ wire passed through the pseudoaneurysm neck into the femoral artery retrogradly, focusing on the “marker” wire. A 6F radial introducer is introduced along 0.018ʺ wire. Further, this access was used to close the pseudoaneurysm neck with the Angio-Seal Closure Device 6F according to the standard method. In a control angiograms, a pseudoaneurysm did not contrast, arteries are passable without stenosis and signs of dissection. Hemostasis at the site of puncture of the radial artery was performed with a hemostatic bracelet. The patient was discharged from the clinic to continue treatment in a rehabilitation neurological center.This technique of endovascular treatment of postcatheterization pseudoaneurysms of the common femoral artery is quite simple, causing minimal discomfort for the patient. The closure is immediate and angiographically controled. The use of radial access instead of contralateral femoral access for introducing of a “marker” wire and angiographic control reduces the risk of local complications at the access site.

P680 Aortic arch myxoma with multiple peripheral embolism.

Abstract We report an unusual localisation of myxoma, the most common primary cardiac neoplasm. A 58-year-old woman was admitted to surgery department with exacerbation of abdominal discomfort and symptoms of lower limb claudication.The abdominal CT showed embolism in the upper mesenteric artery arms with intestinal ischemia, in the minor renal arteries with kidney infarcts and in the minor arteries of lower extremities. She was urgently, succesfully operated and partial resection of the small intestine was performed. The chest angio-CT conducted three days after the operation revealed additional structure in the aortic arch. Local aortic arch dissection with a thrombus was initially suspected. Echocardiography showed homogenous tumor on the minor curvature of the aortic arch, with a base of 11 mm of width, reaching down with the blood stream towards the descending aorta. The aortic wall was linear, with no signs of dissection or atherosclerotic lesions, echogenicity indicated rather solid mass. The patient was operated cardiosurgically and tumor of a myxoma type was confirmed intraoperatively. Another, small tumor of the same type was found below isthmus, in a descending aorta. Partial resection of aortic arch, alloplasty of aortic arch with the use of a dacron prosthesis were performed. The tumor below the isthmus was removed, without resection of aortic wall, due to the high risk associated with the widening of the procedure. Multimodality imaging with the essential role of echocardiography is useful especially in differential diagnostics of the atypically localized tumors causing diffuse peripheral embolization. Abstract P680 Figure. Aortic arch myxoma tumor

P190 Chest pain and syncope in Turner"s syndrome: going beyond the obvious to not miss the critical diagnosis. Role of multimodality imaging approach

Abstract Clinical Presentation: a 18-year-old woman with Turner’s syndrome (TS), with history of hypothyroidism treated with L-thyroxin, asymptomatic moderately stenotic bicuspid aortic valve (AV) and without any known cardiovascular risk factor, was admitted to our emergency department (ED) because of syncope and typical chest pain after dinner associated with dyspnea. Chest pain lasted for an hour with spontaneous regression. In the ED the patient (pt) was normotensive. An ECG showed sinus rhythm (88 bpm), nonspecific repolarization anomalies (T wave inversion) in the inferior and anterior leads. Myocardial necrosis biomarkers were negative. A 3D transthoracic echocardiography showed normal biventricular systolic function with left ventricular hypertrophy, dilatation of the ascending aorta, unicuspid AV with severe aortic stenosis (peak/mean gradient 110/61 mmHg, aortic valve area 0,88 cm2-0,62 cm2/m2), mild pericardial effusion (Figure Panel A, B, C). Five days after, the pt had a new episode of typical chest pain without ECG changes. A computerized tomography (CT) was performed to rule out the hypothesis of aortic dissection and showed a dilation of the ascending aorta and pericardial effusion localized in the diaphragmatic wall, no signs of dissection or aortic hematoma. However, CT was of suboptimal quality because of sinus tachycardia (120 bpm) and so the pt underwent a coronary angiography and aortography that ruled out coronary disease, confirmed the dilatation of ascending aorta (50 mm) and showed images of penetrating atherosclerotic ulcer of the ascending aorta (Figure panel D). The pt underwent urgent transesophageal echocardiography (TOE) that confirmed the severely stenotic unicuspid AV and showed a localized type A aortic dissection (Figure Panel E, F, G). The pt underwent urgent AV and ascending aorta replacement (Figure Panel H). Learning points Chest pain and syncope are challenging symptoms in pts presenting in ED. AV pathology and aortic dissection should be always suspected and ruled out. TS is associated with multiple congenital cardiovascular abnormalities and is the most common established cause of aortic dissection in young women. 30% of Turner’s pts have congenitally AV abnormalities, and dilation of the ascending aorta is frequently associated. However, unicuspid AV is a very rare anomaly, usually stenotic at birth and requiring replacement. The presence of pericardial effusion in a pt with chest pain and syncope should raise the suspicion of aortic dissection, even if those symptoms usually accompany severe aortic stenosis. Even if CT is the gold standard imaging technique to rule out aortic dissection, the accuracy of a test is critically related to the image quality. When the suspicion of dissection is high and the reliability of the reference test is low, it’s reasonable to perform a different test to rule out the pathology. Aortography and TOE were pivotal to identify the limited dissection of the ascending aorta. Abstract P190 Figure.