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Related Concept Videos

Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

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Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Aneurysm III: Interprofessional Care01:26

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Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Aneurysm I: Introduction01:30

Aneurysm I: Introduction

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An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
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Abdominal Aorta01:25

Abdominal Aorta

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Once the aorta traverses the diaphragmatic plane at the aortic hiatus, it is known as the abdominal aorta. This anatomical structure is positioned leftward of the spinal column, encased within a cocoon of adipose tissue behind the peritoneal cavity. It terminates at the L4 vertebra, where it splits into the common iliac arteries. Prior to this bifurcation, the abdominal aorta gives rise to several vital branches.
The celiac trunk, a singular artery, divides into the left gastric artery, which...
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Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

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Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
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Aortic Regurgitation I: Introduction01:15

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IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
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Aortic Dissection Complicated With Superior Mesenteric Artery Aneurysm.

Hisato Takagi1

  • 1Department of Cardiovascular Surgery Shizuoka Medical Center Shizuoka Japan.

Clinical Case Reports
|October 24, 2025
PubMed
Summary

A rare case of acute type B aortic dissection, also known as intramural hematoma, complicated by a superior mesenteric artery aneurysm is presented. Shared underlying causes may link these two serious vascular conditions.

Keywords:
acute aortic dissectionaortic dissectionsuperior mesenteric arterysuperior mesenteric artery aneurysm

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Area of Science:

  • Cardiovascular Medicine
  • Vascular Surgery
  • Diagnostic Imaging

Background:

  • Acute type B aortic dissection is a serious cardiovascular emergency.
  • Superior mesenteric artery aneurysms are rare but can lead to life-threatening complications.
  • The simultaneous occurrence of these conditions is exceptionally uncommon.

Purpose of the Study:

  • To report a unique case of acute type B aortic dissection with concurrent superior mesenteric artery aneurysm.
  • To explore potential shared etiologies between aortic dissection and mesenteric artery aneurysms.
  • To highlight the importance of considering multiple vascular pathologies in complex cases.

Main Methods:

  • Case report detailing clinical presentation, diagnostic imaging (e.g., CT angiography), and management.
  • Review of relevant literature on aortic dissection and mesenteric artery aneurysms.
  • Pathophysiological discussion on potential common underlying mechanisms.

Main Results:

  • Successful diagnosis and management of a patient with coexisting acute type B aortic dissection and superior mesenteric artery aneurysm.
  • Identification of potential shared risk factors and etiological pathways, such as connective tissue disorders or inflammatory processes.
  • Demonstration of the diagnostic utility of advanced imaging in complex vascular emergencies.

Conclusions:

  • The coexistence of acute type B aortic dissection and superior mesenteric artery aneurysm, though rare, warrants consideration.
  • Shared etiological factors may underlie the development of both conditions.
  • Comprehensive vascular evaluation is crucial in patients presenting with complex aortic pathologies.