Zenker's diverticulum is a pouch that forms in the upper part of the swallowing passage and can cause regurgitation, bad breath, cough, or trouble swallowing.
Common symptoms include difficulty swallowing, bringing food back up after swallowing, bad breath, coughing, a feeling that food is stuck, and sometimes weight loss.
Imaging helps show the pouch clearly, show how large it is, and explain whether it is trapping food during swallowing.
A fluoroscopic swallowing study can show the pouch clearly and help define how it behaves during swallowing.
Treatment depends on symptoms and may include observation or procedure-based or surgical correction in more troublesome cases.
This entry explains the condition. The next step is having a radiologist interpret your specific scan, not a general definition.