The fluoroscopic barium esophagram is the primary tool
for the diagnosis of Zenker diverticulum. The diverticulum
appears as an outpouching arising from the midline of the
posterior wall of the distal...
Frequently, a posterior bar representing a prominent
cricopharyngeus muscle is noted as the contrast bolus
passes. As the contrast bolus normally travels quickly
through the pharynx and upper esophagus,...
When the diverticulum is large enough to protrude
laterally, it protrudes to the left in 90% of the cases. After
the contrast agent bolus passes the upper esophagus, the
diverticulum is typically seen...
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