Cystic bronchiectasis
This case demonstrates the hallmarks of cystic bronchiectasis with bronchial wall thickening and dilated "cysts" visible on the chest x-ray, these correspond to fluid filled cystic bronchiectasis on CT.
The three subtypes of bronchiectasis, based on morphology are:
- cylindrical bronchiectasis
- commonest form, bronchi have a uniform caliber, do not taper and have parallel walls (tram track sign and signet ring sign)
-
varicose bronchiectasis
- uncommon, beaded appearances where dilated bronchi have interspersed sites of relative narrowing
- cystic bronchiectasis
- severe form with cyst-like bronchi that extend to the pleural surface
- air-fluid levels are commonly present
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