I don't know about pulminary fibrosis, but, my Dad just had his lymph nodes biopsied last Thursday. His nodes were enlarged. He had nights sweats and pain inside the shoulder area that kept him from sleeping well at all. They started chemo on him last Monday, April 1st. They have told him this is very treatable and his chances of living 10 more years is very high. He is 85! For a young person such as you, if you have lymphoma and they get it early, you will have many many years! Sounds as if it's caught very early! My Dad's was way advanced. He has tumors in his chest too that they cannot reach for biopsy. They are giving him chemo for 6 sessions, about 3 weeks apart. So, make sure you go to your appts and have the tests done. They can save your life if you have lymphoma. Good luck. HOpe this has helped.