Answer:
I think all can cause cuz..
medication =
No healthcare provider wants a prescribed drug to cause another disease. But, such is the case with drug-induced diseases (DIDs), which refer to unintended effects of a drug that could result in complications or death, with symptoms sufficient to elicit medical attention or hospitalization.
surgery=
Even with many precautions and protocols to prevent infection in place, any surgery that causes a break in the skin can lead to an infection. Doctors call these infections surgical site infections (SSIs) because they occur on the part of the body where the surgery took place.
radiation treatment=
Radiation pneumonitis is inflammation of the lungs that can be caused by radiation treatment to the chest (or less often, the breast). It may occur about 3 to 6 months after getting radiation therapy. It's more likely if you have other lung diseases, like emphysema (which involves gradual damage of lung tissue).
but I feel like its radiation treatment since its has more chances of getting disease