[header] How to undergo a lung biopsy [title] Record your symptoms. [step] If you think you may have a problem with your lungs, you should write down what symptoms you are experiencing. Keep a journal over a period of several days or weeks so that you can show your doctor a detailed account of what you've been feeling lately. 
[substeps] This will help your doctor make an informed decision about whether or not you need a lung biopsy. Keep track of things like difficulty breathing, localized pain, shortness of breath, fever/chills, and coughing up blood.