My recent CT scan showed…Branching nodule conforming to the shape of an airway in the left upper lobe measures up to 2.1 cm in maximum dimension There are associated distal tree-in-bud nodules There is no associated cavitation. There is no bronchiectasis. Additional, smaller cluster of distal impacted airways with associated tree-in-bud nodules are present more superiorly in the left upper lobe. I didn’t have any of this in my CT scan 6 months ago…. Safe to assume this is very fast growing …thoughts? Seems odd to just show up I had the CT scan to follow up on a lung nodule that has since resolved itself but now the CT showed the above… all seems so strange. My mom has lung cancer that was in remission but now back…never any of this terminology before.