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Clinical Problem Solving: Radiology
July 2011

Radiology Quiz Case 1: Diagnosis

Author Affiliations
 

SECTION EDITOR: C. DOUGLAS PHILLIPS, MD

Arch Otolaryngol Head Neck Surg. 2011;137(7):720. doi:10.1001/archoto.2011.95-b

Diagnosis: Bilateral laryngomucocele

The laryngeal saccule is a normal vertical outpouching of the laryngeal ventricle. It is lined with respiratory epithelium and normally extends superiorly between the false cord and the medial surface of the thyroid cartilage.1,2 Abnormalities of the laryngeal saccule include laryngoceles and saccular cysts. Laryngoceles are air-filled dilatations of the saccule that freely communicate with the laryngeal ventricle, close to the anterior commissure. Laryngoceles are classified as internal, external, or combined. Internal laryngoceles extend superiorly between the thyroid cartilage and the false vocal cord and do not pass through the thyrohyoid membrane, whereas the external type does. Combined laryngoceles have both characteristics.1,2

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