AJR. American journal of roentgenology
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Esophageal perforation is a life-threatening condition that can be quickly diagnosed on the basis of findings on contrast esophagograms when the typical signs and symptoms of vomiting, chest pain, and subcutaneous emphysema occur. If the clinical features are atypical, CT may be performed early in the clinical course. Thus, recognition of the CT findings of esophageal perforation is important. ⋯ For patients who have atypical signs and symptoms, CT scans optimally define the extraluminal manifestations of esophageal perforation. Extraesophageal air is the most useful finding. The CT findings may be the first indication of the diagnosis.
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The abducens nerve, the sixth cranial nerve, innervates the lateral rectus muscle of the eye and is responsible for lateral horizontal ocular movement. A wide variety of abnormalities, both primary to the nerve itself and secondarily involving the nerve, can paralyze the abducens nerve. MR imaging offers the best opportunity to detect the underlying abnormality causing abducens nerve palsy. In this pictorial essay, we illustrate the MR imaging features of numerous conditions that cause isolated abducens nerve palsy.