Hi deamo5339, I understand where you are coming from. I was first diagnosed 3 years ago with mets to my femur/humerus and extensive nodules and a small tumor in my lung. They did a biopsy to determine if it was breast cancer spread or lung cancer. They also drained a small pleural effusion at that time.It was from the BC and labeled the effusion "malignant pleural effusion" as it had cancer cells in the fluid. I was scared as my mom died from Lung Cancer. Since that drain they put me on Ibrance for my Estrogen + / Her-2 negative type. It helped with what was in my lungs as well as keeping me from having any further problems with effusion. It also helped with my bone mets.
Recently I had another scare as they spotted possible tumors in the pleural space. They biopsied it last week and also drained more fluid that I didn't even know I had building up. The results sound more like some kind of inflammation but not identifiable as more cancer. It's hard not to be scared until the results come in. Just know that there are so many treatments now that are working wonders. I'll celebrate my 3 years since diagnosis on April 24th, when at first I didn't know if I'd live a year. As far as that effusion goes, I do know gals that have to have theirs drained every so often but they are otherwise doing well.
If you have any more questions and I can be of help just let me know.
Peggie