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Related Concept Videos

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.
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Aneurysm I: Introduction01:30

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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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Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
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Ultrasound I: Abdominal Ultrasonography01:20

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Introduction:
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Procedure:
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Abdominal Regions and Quadrants01:19

Abdominal Regions and Quadrants

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To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
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Related Experiment Video

Updated: Feb 10, 2026

Porcine Model of Infrarenal Abdominal Aortic Aneurysm
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Multiple Re-entry Closures After TEVAR for Ruptured Chronic Post-dissection Thoraco-abdominal Aortic Aneurysm.

R Kinoshita1, F Ganaha1, J Ito1

  • 1Department of Radiology, Okinawa Prefectural Nanbu Medical Centre, Okinawa, Japan.

EJVES Short Reports
|May 22, 2018
PubMed
Summary

Closing abdominal and iliac re-entry tears with endovascular aneurysm repair (EVAR) and covered stents is crucial for treating chronic post-dissection thoraco-abdominal aortic aneurysm (TAA). This approach achieves false lumen thrombosis and aneurysm shrinkage, offering an alternative to complex fenestrated/branched endografts.

Keywords:
Aortic dissectionEndovascular aortic repairEndovascular proceduresPost-dissection thoracoabdominal aortic aneurysmReentry closureRuptured aortic aneurysm

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Area of Science:

  • Vascular Surgery
  • Endovascular Interventions
  • Aortic Aneurysm Treatment

Background:

  • Thoracic endovascular aortic repair (TEVAR) is limited for chronic post-dissection thoraco-abdominal aortic aneurysm (TAA) due to persistent false lumen (FL) retrograde flow.
  • Abdominal or iliac re-entry tears contribute to FL patency, hindering successful TEVAR outcomes in TAA.

Observation:

  • A case of chronic post-dissection TAA with FL rupture into the thorax was treated.
  • Emergency TEVAR closed the primary entry tear.
  • Endovascular aneurysm repair (EVAR) with covered stents occluded abdominal and iliac re-entries, including at the renal artery and iliac bifurcation.

Findings:

  • The EVAR procedure utilized chimney techniques and aortic extenders to close distal re-entries.
  • Despite residual re-entries, complete FL thrombosis at the rupture site was achieved.
  • Follow-up CT scans demonstrated significant FL shrinkage.

Implications:

  • Adjunctive techniques to close distal re-entries are necessary for complete FL exclusion in post-dissection TAA, especially in rupture cases.
  • This multi-re-entry closure technique using readily available devices offers a viable endovascular alternative for TAA treatment, particularly in emergencies.
  • It presents a practical alternative to complex fenestrated or branched endografts, which have limited widespread use due to technical challenges.