my Sister is Being Tested For Cancer.

My sister has been having some health problems for about a year. She found some lumps in her Lymph Nodes about a year ago and went to a surgeon whom was suppose to do a biopsy, but instead he felt of the lumps and said they were nothing to worry about. Now a year later has been expereincing some bruising that happens without incident. Her viens will kind of like swell up and become sore then they a knot will pop up on them and she will bruise. Her knees have been aching and her ankles as well. I was wandering if anyone else has ever expereinced this. She is goin for testing on monday the 13th.