### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi, my boyfriend had a surgery years ago due to his lung collapsing...yesterday he was complaining about the side where he had the surgery was in pain when he woke up...then when he got in from work he said he could still feel pressure on that left side..he tried lying on his back to see if it would make a difference but he said it was still the same..I guess he was making sure he wasnt feeling the same symptoms he felt when his lung collapsed..what could it be??

### output:

Hi Dear !! Thanks for your query to Chat Doctor. I reviewed facts of your query in context to your health issues. My Opinion-In My opinion, in the given situation you seem to suffer from-Reactivation of Infection on side of past of surgery for collapsed lung. In absence of further information, general comments could be given. As in most of the cases, collapse of lung(Atelectasis) is due to infection in the lung, many a time this infection, after many yrs could get reactivated. CT Chest after X-ray chest could fix the cause of it. Other cause of sucChatDoctorplaints- needs to be ruled out by consults with attending Chest Surgeon, who would plan further treatment after physical and radiological/blood tests. Next appointment-xxx. If you update more information/ details upon these suggestions, I would give further suggestions on medicines to correct your health issues. If need be, update any health issue 24 x 7 by a direct question to ME, at following Chat Doctor link-http://doctor.Chat Doctor .com/Funnel?page=askDoctorDirectly&docId=70229 Dear, if you don't have any further query in this regard, Do close this query with YOUR pleasing and feedback comments to rate this reply and service, to boost the morale of incoming Emergency patients like YOU, at Chat Doctor services. If you want to update more details and ask more update queries, You are most Welcome herewith !! Good Day!! Wishing Good Healthy Life in time to come!!  Chat Doctor. N. Senior Surgical Specialist M.S. Genl-CVTS