This patient came with chronic productive cough and clubbing and coarse rales. What is the diagnosis of the CT scan shown?

The image shows multiple cystic clusters of thin-walled cystic spaces in lung parenchyma bilaterally and can be seen to be bigger on the left side as left lower lobe is more commonly involved in bronchiectasis. Varicose bronchiectasis term implies non-uniform bronchial dilatation. Multiple cavitating Secondaries Cavitation occurs in about 4% of total metastasis to lung and history does not give any information about the primary source of malignancy, hence the choice is ruled out. Interstitial fibrosis Presents with a chronic cough, clubbing but fine crepitations and CT shows- Honeycombing with ground glass appearance. Miliary tuberculosis CT shows millet seed appearance