First we should do some genetic test in your uncle's biopsy specimen. Based on that we can tell it is hereditary or sporodic cancer. If  that test is positive family to be counselled for about prons and cons of the test. Need more technical terms difficult to explain through message. Discuss with treating oncologist

Not all cancers are hereditary... To classify your risk we need to do certain mutation analysis on tumor sample and certain in patients blood.. Based on those reports we need to classify his tumor type then hereditary or sporadic and risk to ralatives.. It is a complicated discussion... Needs a genetic counsellor aa part of disacussion..