retroesophageal
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retroesophageal space — 1. spatium retropharyngeum … Medical dictionary
arteria lusoria — an abnormally situated retroesophageal vessel, usually the subclavian artery from the aortic arch, which may cause symptoms by compression of the esophagus, the trachea, or a nerve … Medical dictionary
spatium retropharyngeum — [TA] retropharyngeal space: the part of the spatium peripharyngeum that lies just behind the prevertebral layer of the deep cervical fascia, extending from the base of the skull to the level of the second thoracic vertebra. It is subdivided into… … Medical dictionary