My mom is a cancer survivor and has had breast, melanoma, and lung cancers - all separate incidences. In 2005 she had part of her lung removed surgically and had both chemo and radiation. Although she is doing OK - she still has cancer in both lungs though rather slow growing. This past fall, she was put on a chemo regimen every 3 weeks. Her fatigue level was high and she was not feeling well so the dr approved a "chemo holiday". Also - she has sleep apnea and uses a cpap machine/mask. Recently she coughed up quite a bit of blood and wound up in the hospital. After a broncoscopy, the dr determined that she had a fungal infection in her lung cavity and is now on medication. Could the CPAP be the source of that infection & if so, how can we avoid that?