My husband has cancer in oesophagus, lungs and liver

Hi there we were given the tragic news Saturday that my husband has cancer in the oesophagos lungs and liver he has never smoked doesn’t really drink and is a very strong man and only 52 how has this happened he’s in hospital at the moment as he has a liver infection he had no symptoms only that he felt slightly lethargic had a tiny cough and a bit of acid reflux then this infection came and bang he was in hospital I have never been so scared in my life next week we find out what care package we will be given we feel our whole life and that of our 3 kids have been turned upside down .......