Hi, on my father's side,many family members have or had rare forms of cancer.some have died.Just found out my 3rd cousin 23yrs old passed away 3 hrs ago. 3 wks ago he had his eye removed due to a benign tumor.than yesterday we found out he had cancer thru-out his body.also had it in his testicals.my brother died age 20 of hairy cell lukimia.I have M.S. Do I have a high risk factor.what kind of cancer could my cousin had.