I Have A Mass Near The Pancreas, Not Attached. Ct

I have a mass near the pancreas, not attached. Ct scan found it because I was having pain in the right side. Thought is was appendicitis. initial diagnosis is retroperitoneal sarcoma. and lymph nodes involved. Trying to get into the oncology to find out what is really going one and I'm getting put off. Ct was done 1/1/17 about 10:00 p.m. Dr. Sheriffe, (not sure how it's spelled)has my records and a copy of CT scan.