@sueinmn
Hi Sue
This is from AI
Yes, bronchiectasis can cause mucus plugs, as it is characterized by impaired mucus clearance and an accumulation of mucus. The chronic inflammation and structural changes in the airways of those with bronchiectasis lead to mucus that is thicker and more prone to forming plugs, particularly in the distal airways.

Also
This is from my bronchoscopy report:

Mucus, plugging the
airway, was found throughout the tracheobronchial
tree. The mucus was copious, white and thick. The
underlying mucosa is erythematous. Virtually all
segmental airways were plugged with long tenacious
plugs. The scope was removed x 4 with long plugs in
tow, that would not pass thru the scope with maximal
suction. The plugs were up to 15 cm in length forming

Shoot I wish I could cough out this stuff!