The Annals of otology, rhinology, and laryngology · 2012
The ram sign: detecting previously undiagnosed congenital laryngeal clefts in adults.
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Weissbrod Philip A, Inglis Andrew, Merati Albert L
Аннотация
OBJECTIVES: We present the clinical characteristics of a case series of adult patients with type III laryngeal clefts according to the classification of Benjamin and Inglis, in an attempt to make practitioners aware of the "ram sign," a clinical finding associated with laryngeal clefts in adults. Laryngeal clefts are uncommon defects that are nearly universally identified during infancy as a result of persistent aspiration and pneumonia. Undiagnosed laryngeal clefts in adults are extremely rare.
METHODS: Three type III laryngeal clefts were identified in adults (29, 48, and 60 years of age) from one clinic over an 18-month period. The existing literature features only one type III cleft, to our knowledge. The 60-year-old patient represents the oldest person in the English-language literature to have a newly diagnosed laryngeal cleft. All three cases presented with various degrees of aspiration over an extended period.
RESULTS: The computed tomographic imaging and endoscopic findings from these three patients were reviewed. The videolaryngoscopic images demonstrated that the "ram sign"--an endoscopic finding associated with redundant soft tissue overlying the arytenoid cartilages that prolapses into the cleft, creating the appearance of ram's horns--was a consistent and striking feature in all three patients.
CONCLUSIONS: 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.
METHODS: Three type III laryngeal clefts were identified in adults (29, 48, and 60 years of age) from one clinic over an 18-month period. The existing literature features only one type III cleft, to our knowledge. The 60-year-old patient represents the oldest person in the English-language literature to have a newly diagnosed laryngeal cleft. All three cases presented with various degrees of aspiration over an extended period.
RESULTS: The computed tomographic imaging and endoscopic findings from these three patients were reviewed. The videolaryngoscopic images demonstrated that the "ram sign"--an endoscopic finding associated with redundant soft tissue overlying the arytenoid cartilages that prolapses into the cleft, creating the appearance of ram's horns--was a consistent and striking feature in all three patients.
CONCLUSIONS: 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.