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The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
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The aorta is the largest artery in the human body. It originates from the left ventricle of the heart and extends down to the abdomen, where it splits into two smaller arteries. Structurally, it can be divided into four main parts: the ascending aorta, the aortic arch, the thoracic aorta, and the abdominal aorta.
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The thoracic section of the aorta begins at the T5 vertebra and extends to the T12 level at the diaphragm, initially progressing through the mediastinum to the left of the spinal column. Throughout its course in the thoracic segment, the thoracic aorta emits various offshoots known collectively as visceral and parietal branches. The branches that predominantly supply blood to visceral organs are termed visceral branches and include bronchial, pericardial, esophageal, and mediastinal arteries,...
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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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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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[RIGHT AORTIC ARCH].

Emil Sameyah1, Gil Bachar1

  • 1Department of Diagnostic Imaging, Computed Tomography Unit, Hashron Hospital, Petach Tikva, and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.

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PubMed
Summary

A rare congenital anomaly, a right aortic arch, caused an aberrant left subclavian artery leading to esophageal compression and dysphagia in an adult male. This case highlights a vascular ring variant presenting with swallowing difficulties.

Area of Science:

  • Cardiovascular anatomy
  • Congenital anomalies
  • Vascular variations

Background:

  • Right aortic arch is a rare congenital anomaly.
  • It can form incomplete vascular rings.
  • These are typically asymptomatic but can cause symptoms.

Observation:

  • A 66-year-old male presented with dysphagia.
  • The dysphagia was caused by external esophageal compression.
  • This compression resulted from an aberrant left subclavian artery.

Findings:

  • The aberrant left subclavian artery was part of a right aortic arch anomaly.
  • This anatomical variant formed an incomplete vascular ring.
  • The condition, usually asymptomatic, caused swallowing difficulties in this adult patient.

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Implications:

  • This case illustrates a rare cause of adult-onset dysphagia.
  • It emphasizes the importance of considering vascular anomalies in esophageal compression.
  • Recognition of such anatomical variants is crucial for diagnosis and management.