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Updated: Aug 10, 2026

Surgical Induction of Endolymphatic Hydrops by Obliteration of the Endolymphatic Duct
Published on: January 22, 2010
CT diagnosis of pyriform sinus perforation
J M Schwartz1, R A Holliday, S D Breda
1Department of Radiology, New York University Medical Center, NY 10016.
Abstract:
Computed tomography is currently used as an adjunct to oral contrast studies in the diagnosis and management of esophageal and posterior pharyngeal perforation. We present the CT findings of a surgically proven iatrogenic pyriform sinus perforation. Although extravasation of contrast material was depicted by pharyngography, the site of perforation could not be demonstrated. Knowledge of the pattern of spread of pharyngeal neoplasms was essential for correct interpretation of CT. In our patient the perforation was caused by traumatic passage of an Ewald tube, an unusual and previously unreported complication.
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