Cricoid ridge ossification mimicking ingested fish bone on plain radiography: prevalence in Singapore

摘要

INTRODUCTIONOssification of the cricoid ridge mimicking impacted upper aerodigestive tract fish bone has been described in several case reports. We performed this study to determine the prevalence of such ossification in an adult population from Singapore and to identify specific imaging features that may aid in differentiating patients with cricoid ridge ossification from those with an upper aerodigestive tract impacted fish bone.