On barium swallow which of the following will cause posterior impression:
Correct Answer: Aberrant right subclan aery
Description: Aberrant right subclan aery Grainger writes? "Congenital vascular lesions rarely cause oesophageal symptoms and are often demonstrated as a chance .finding. These include the impressions caused by aberrant right subclan aeries and right-sided aoic arches. The former produces the classic appearance of a posterior impression on the proximal oesophagus, which on the AP view gives a band-like impression as the k'essel ascends posterior to the oesophagus." Aberrant right subclan aery is a common embryologic abnormality of the aoic arch The aberrant aery arises just distal to the left subclan aery and crosses in the posterior pa of the mediastinum usually behind the esophagus on its way to the right upper extremity. Such course of this aberrant vessel may cause a vascular ring around the trachea and esophaugus. Dysphagia due to an aberrant right subclan aery is termed dysphagia lusoria. Palsy of the recurrent laryngeal nerve is termed Oner's syndrome. Pulmonary aery sling causes anterior indentation of esophagus Pulmonary aery sling is created by anomalous origin of the left pulmonary aery from the posterior aspect of the right pulmonary The anomalous left pulmonary aery courses over the right mainstem bronchus and then from right to left, posterior to the trachea or carina and anterior to the esophagus, to reach the hilum of the left lung. This compresses the lower trachea and right mainstem bronchus, producing upper airway symptoms.
Category:
Radiology
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