I have a large mass i an 58 yrs old which is coming from my pelvis 20cms by 10cms .i had a Mri and Ct scan but they want me to have another Mri and ct scan. My bloods are normal. But i have great discomfort like period pains inmy lower abdoman and pain down my legs especially numbness at the top of my right leg. I have pain at the bottom of my spine. Could I hsve cancer ?? What am i looking at operation wise ???