The Ram Sign: Detecting Previously Undiagnosed Congenital Laryngeal Clefts in Adults

Abstract

Although rare, laryngeal clefts may represent an underdiagnosed entity in the adult population. With increased awareness, they may be identified more frequently as a treatable cause of aspiration and recurrent pneumonia.

Dynamic respiratory endoscopy of Standardbred racehorses during qualifying races

“…3) Laryngeal dislocation in man [20] where the entire affected arytenoid is displaced ventrally at rest due to subluxation of the crico‐arytenoid joint. (4) Laryngeal cleft in man most closely resembles the endoscopic observations described in this paper; however, in man it occurs at rest and is associated with oesophageal regurgitation [21]. They described the anomaly as the ‘ram sign’ in reference to the shape of the horns in that species.…”