> as I was reviewing my CT scan, I saw that I had mild bronchiectasis.

I'd be interested to hear how you found that, how you are reviewing
your CT-scan. I spent much time to do that with my CTs.
(I asked before to show and discuss CT-pictures, but a moderator
was concerned wrt. privacy issues)
3 signs of BE=bronchiectasis are usually mentioned :
"signet ring" , no tapering, bronchi visible near the pleura

quoting from the British Thoracic Society Bronchiectasis-Guidelines , 2018 :
------------------------------------------------------
CT features of bronchiectasis
Bronchiectasis is defined by bronchial dilatation
as suggested by one or more of the following:
1.) Bronchoarterial ratio >1 (internal airway
lumen vs adjacent pulmonary artery)
2.) Lack of tapering
3.) Airway visibility within 1cm of costal
pleural surface or touching mediastinal pleura.

The following indirect signs are commonly
associated with bronchiectasis:
Bronchial wall thickening
Mucus impaction
Mosaic perfusion / air trapping on expiratory CT