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Treating collapsing trachea in dogs can be a daunting prospect for owners. Tracheal collapse occurs when the windpipe becomes flattened and the airflow in and out of the lungs is obstructed.

When someone has a large cancer in their windpipe, physicians can't simply just cut the tumor out, Nguyen said. The windpipe is a rigid structure, so surgeons cannot connect the two ends, Nguyen said.