Partner had lung biopsy now waiting for results. V.Scared

Oh goodness

having myself just got through breast cancer treatment, my partner of many years lost a lot of weight over the last 6 months. He has had various tests including prostrate but nothing has been found. A few days ago he had a lung biopsy so now waiting for the results! 
I am worried, he is 70 years old now and been my rock through my treatment. Fingers crossed it's not too serious. 
Silver x