Anyone had a collapsed lung?

Has anyone had a collapsed lung due to a growth blocking your airway? If so, did it resolve with treatment?

The reason I found out I have lung cancer is because my lung collapsed and I have a pleural effusion. Draining it did not inflate my lung and the CT scan showed a growth is blocking my airways. They tried 'drilling' through the growth during a bronchoscopy and it helped my breathing a little, but lung is still nearly completely collapsed.

I just started chemo and I'm hoping the growth shrinks and my lung comes back online! Does anyone have any experience of lung collapse and whether and how it can possibly inflate again!

Thank you.