Sister had 4 surgeries to remove melanoma from skin, abdominal lymph glands and right lung. Within 6 weeks of surgery to lungs cancer had multiplied in both lungs. 9 tumours, one very close to Aorta. Told no cure. Immunotherapy advised however unable to tolerate first time around. Affected Crohns and Liver. She doesn't want to know prognosis. I however do for practical reasons like care for her children. I have been a nurse for 25 years. Research suggests 3- 7months? Is this accurate? Thank you.