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Valente T, Sica G, Romano F, Rea G, Lieto R, De Feo M, Della Corte A, Guarino S, Massimo C, Scaglione M, Muto E, Bocchini G. Non-A Non-B Acute Aortic Dissection: Is There Some Confusion in the Radiologist's Mind? Tomography 2023; 9:2247-2260. [PMID: 38133078 PMCID: PMC10746994 DOI: 10.3390/tomography9060174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND The aim of this study is to define and determine the rate of acute non-A-non-B aortic dissections, and to evaluate CT angiography findings and possible complications, as well as to discuss management strategies and currently available therapy. Non-A non-B type of aortic dissection is still a grey area in the radiologist's mind, such that it is not entirely clear what should be reported and completed in terms of this disease. METHODS A retrospective single-center study including 36 pre-treatment CT angiograms of consecutive patients (mean age: 61 years) between January 2012 and December 2022 with aortic dissection involving the aortic arch with/without the thoracic descending/abdominal aorta (type non-A non-B). RESULTS According to the dissection anatomy, we identified three modalities of spontaneous acute non-A-non-B anatomical configurations. Configuration 1 (n = 25) with descending-entry tear and retrograde arch extension (DTA entry). Configuration 2 (n = 4) with Arch entry tear and isolated arch involvement (Arch alone). Configuration 3 (n = 7) with Arch entry and anterograde descending (±abdominal) aorta involvement (Arch entry). CT angiogram findings, management, and treatment options are described. CONCLUSIONS Acute non-A non-B dissection represents an infrequent occurrence of aortic arch dissection (with or without involvement of the descending aorta) that does not extend to the ascending aorta. The complete understanding of its natural progression, distinct CT angiography subtypes, optimal management, and treatment strategies remains incomplete. Within our series, patients frequently exhibit a complex clinical course, often necessitating a more assertive approach to treatment compared to type B dissections.
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Affiliation(s)
- Tullio Valente
- General Radiology Unit, AORN Ospedali dei Colli, Monaldi Hospital, 80131 Naples, Italy; (G.S.); (S.G.); (G.B.)
| | - Giacomo Sica
- General Radiology Unit, AORN Ospedali dei Colli, Monaldi Hospital, 80131 Naples, Italy; (G.S.); (S.G.); (G.B.)
| | - Federica Romano
- General Radiology Unit, AORN Ospedali dei Colli, Monaldi Hospital, 80131 Naples, Italy; (G.S.); (S.G.); (G.B.)
| | - Gaetano Rea
- General Radiology Unit, AORN Ospedali dei Colli, Monaldi Hospital, 80131 Naples, Italy; (G.S.); (S.G.); (G.B.)
| | - Roberta Lieto
- General Radiology Unit, AORN Ospedali dei Colli, Monaldi Hospital, 80131 Naples, Italy; (G.S.); (S.G.); (G.B.)
| | - Marisa De Feo
- Department of Translational Medical Sciences, Vanvitelli University, Monaldi Hospital, 80131 Naples, Italy
| | - Alessandro Della Corte
- Department of Translational Medical Sciences, Vanvitelli University, Monaldi Hospital, 80131 Naples, Italy
| | - Salvatore Guarino
- General Radiology Unit, AORN Ospedali dei Colli, Monaldi Hospital, 80131 Naples, Italy; (G.S.); (S.G.); (G.B.)
| | - Candida Massimo
- General Radiology Unit, AORN Ospedali dei Colli, Monaldi Hospital, 80131 Naples, Italy; (G.S.); (S.G.); (G.B.)
| | - Mariano Scaglione
- Department of Medicine, Surgery and Pharmacy, University of Sassary, 07100 Sassari, Italy;
| | - Emanuele Muto
- General Radiology Unit, AORN Ospedali dei Colli, Monaldi Hospital, 80131 Naples, Italy; (G.S.); (S.G.); (G.B.)
| | - Giorgio Bocchini
- General Radiology Unit, AORN Ospedali dei Colli, Monaldi Hospital, 80131 Naples, Italy; (G.S.); (S.G.); (G.B.)
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MDCT Imaging of Non-Traumatic Thoracic Aortic Emergencies and Its Impact on Diagnosis and Management—A Reappraisal. Tomography 2022; 8:200-228. [PMID: 35076599 PMCID: PMC8788571 DOI: 10.3390/tomography8010017] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 12/28/2021] [Accepted: 01/04/2022] [Indexed: 01/16/2023] Open
Abstract
Non-traumatic thoracic aorta emergencies are associated with significant morbidity and mortality. Diseases of the intimomedial layers (aortic dissection and variants) have been grouped under the common term of acute aortic syndrome because they are life-threatening conditions clinically indistinguishable on presentation. Patients with aortic dissection may present with a wide variety of symptoms secondary to the pattern of dissection and end organ malperfusion. Other conditions may be seen in patients with acute symptoms, including ruptured and unstable thoracic aortic aneurysm, iatrogenic or infective pseudoaneurysms, aortic fistula, acute aortic thrombus/occlusive disease, and vasculitis. Imaging plays a pivotal role in the patient’s management and care. In the emergency room, chest X-ray is the initial imaging test offering a screening evaluation for alternative common differential diagnoses and a preliminary assessment of the mediastinal dimensions. State-of-the-art multidetector computed tomography angiography (CTA) provides a widely available, rapid, replicable, noninvasive diagnostic imaging with sensitivity approaching 100%. It is an impressive tool in decision-making process with a deep impact on treatment including endovascular or open surgical or conservative treatment. Radiologists must be familiar with the spectrum of these entities to help triage patients appropriately and efficiently. Understanding the imaging findings and proper measurement techniques allow the radiologist to suggest the most appropriate next management step.
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Frozen elephant trunk en la disección aórtica aguda tipo i : ¿ha llegado su momento? CIRUGIA CARDIOVASCULAR 2017. [DOI: 10.1016/j.circv.2017.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Belov YV, Komarov RN, Karavaykin PA. Cardiovascular surgeon’s role in hybrid aortic surgery (part 2). ACTA ACUST UNITED AC 2016. [DOI: 10.17116/kardio20169134-41] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Results of complex aortic stent grafting of abdominal aortic aneurysms stratified according to the proximal landing zone using the Society for Vascular Surgery classification. J Vasc Surg 2015; 62:319-25.e2. [DOI: 10.1016/j.jvs.2015.03.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Accepted: 03/16/2015] [Indexed: 11/23/2022]
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Multidetector CT findings of complications of surgical and endovascular treatment of aortic aneurysms. Radiol Clin North Am 2014; 52:961-89. [PMID: 25173654 DOI: 10.1016/j.rcl.2014.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aortic aneurysms remain a significant problem in the population, and there is a concerted effort to identify, define, image, and treat these conditions to ultimately improve outcomes. The rapid development of diagnostic modalities, operative strategies, and endovascular techniques within the realm of this aortic disease has transformed the field and broadened the spectrum of patients that can be treated with minimally invasive techniques. This investigation has a broad spectrum of normal expected findings that must be differentiated from early or late complications in which intervention is required. In this article, normal and abnormal postoperative and post-TEVAR/EVAR MDCT findings are described.
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La morfología del aneurisma importa: sacular versus fusiforme. ANGIOLOGIA 2014. [DOI: 10.1016/j.angio.2014.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Surgically relevant aortic arch mapping using computed tomography. Ann Vasc Surg 2012; 26:483-90. [PMID: 22305684 DOI: 10.1016/j.avsg.2011.08.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 08/04/2011] [Accepted: 08/07/2011] [Indexed: 10/14/2022]
Abstract
BACKGROUND Recent advances in surgical repair of aortic arch pathologies have increasingly used endovascular stent-graft technology. The purpose of this study was to map the aortic arch diameters, branch orientations, and center line distances using a commercially available three-dimensional computed tomography-based software package and to propose a prototype design. METHODS TeraRecon 3D imaging software was used for morphological assessment of computed tomography scans from 45 patients (mean age: 68 years; 26 males, 19 females). In each patient, 13 measurements were made in relation to the center line, including diameters at several preset points, distances, and branch vessel orientations. RESULTS The mode of the proximal diameters (2 cm and 4 cm distal to coronary artery) was 32 mm and 34 mm. The mode of the distance between the innominate and left common carotid arteries was 5 mm and 6 mm, and the mode of the distance between the left common carotid artery and left subclavian artery was 8 mm. Most commonly, the left common carotid artery was anterior to the other arch branches by 3 to 5 mm. CONCLUSIONS These anatomic measurements provide useful information for the advancement of minimally invasive and safer surgical repair of the aortic arch. Based on the most commonly observed measurements, a standardized off-the-shelf stent-graft is proposed that would be appropriate for the majority of patients.
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Henrikson O, Roos H, Falkenberg M. Ethylene vinyl alcohol copolymer (Onyx) to seal type 1 endoleak. A new technique. Vascular 2011; 19:77-81. [DOI: 10.1258/vasc.2010.oa0257] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The aim of this study was to investigate whether the liquid embolic agent Onyx, an ethylene vinyl alcohol copolymer, can be used to seal type 1 endoleaks during endovascular aortic repair (EVAR). Six patients with large aortic aneurysms and remaining type 1 endoleaks during or after EVAR were treated with Onyx embolization through a microcatheter placed in the proximal neck in five cases and in the distal neck in one case. Four of the patients were treated using the chimney technique. The type 1 endoleak was primarily sealed by Onyx in all six patients. There was no distal embolization. Two patients had complications during follow-up. One patient had occlusions of chimney grafts to the renal arteries and to one leg extension. These occlusions were not anatomically related to Onyx embolization. One patient had late stentgraft migration of the Onyx-treated distal neck with aneurysm rupture 18 months after treatment. Early experience of Onyx embolization as a bailout solution of type 1 endoleaks after complicated EVAR is promising. However, effective seal with Onyx does not prevent late stentgraft migration. More reported patients and longer follow-up are necessary to evaluate this new technique.
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Affiliation(s)
| | - Håkan Roos
- Department of Vascular Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
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