Your father says, "It's just a bad cough," but it seems like he's had it for a long time, without much improvement. He's never smoked, but his health has been steadily declining. He spent most of his work years in the shipbuilding industry. Maybe you're wondering: could he have been exposed to asbestos? Is that why his lungs aren't functioning well?
Mesothelioma is an aggressive type of cancer that develops in the tissue covering the internal organs. This disease is often deadly, but treatments are available. There are several different types of mesothelioma. The condition is rare for most, but becomes much more common for those who have been exposed to asbestos.