Conversation: The conversation between human and AI assistant.
[|Human|] Im 27 5ft 5 and 7st 10. I was exercising (pilates) and as i stretched i had the urge to cough and there was phlem with blood in it. I have had radiotherapy in the past could it be a weak area in my chest caused by the treatment and i over did the exercise?
[|AI|]  Hi, Thanks for writing in. It will be important to know why you were given radiotherapy treatment earlier. If this was for a cancer in head and neck or chest region then repeat detailed evaluation with CT scan or MRI scan is required. It is possible that your cancer might have had a recurrence if you have recovered from cancer recently. Another possibility is that your immunity is low after taking the radiotherapy, and therefore you might get infections easily. There are many infections which will not affect the normal adult at your age but those having a low immunity might develop these infections and its complications. Please have your chest and throat evaluated in detail by your doctor and also get CT scan or MRI scan to investigate the origin of blood in the phlegm. Exercise rarely can cause this problem. Please do not worry.