Clinical Radiograph of The Week - Vol2No6

This case was presented in the recent edition (vol2no6) of otolaryngology newsletter :
A 53-year old male presented with sudden onset of dysphagia following accidental ingestion of his denture of 24 hours duration. He initially presented to a secondary health care service where radiological investigation revealed an irregular-shaped silhouette under right diaphragm and the feature demonstrated on this C-spine radiograph. He was noticed sipping soft drink while in the waiting room. Clinical examination was not remarkable.
Diagnosis: Air entrapment sign. This sign said to be common with dentures was, in this particular case noted to be due to oedema of the endoluminal oesophageal mucosa at oesophagoscopy