So we moved to a different city in January and took a second opinion from one of the best government Hospitals here. This doctor over there did a thorough physical examination and came to the same conclusion that whatever is mentioned in MRI report is simply RT sides.

Fast forward to April, dad started complaining about back pain and pain in his hips, we took him to a "reputed" ortho and told ortho about his history of tongue cancer, he took X-rays of his hip and after some more examination asked for MRI of LS spine. We did that and he concluded it has nothing to do with cancer and put him on meds for slip disc pain relief and slip disc related physiotherapy which he said will take another month to show results. Dad's pain didn't reduce and post one month when we went back to the doctor he mentioned it's possible that given his age, it is arthiritis related pain and prescribed meds for arthiritis which we didn't consider because it felt like he's just doing hand waving instead of a proper diagnosis, meanwhile we took second opinion from another ortho and he also concluded slip disc and prescribed some other meds and alternative massage therapy for one more month.

We wasted 1 more month but the pain didn't come down, 2 days ago it became so severe that he could barely walk. We went to a third ortho and he asked for hip MRI. The hip MRI showed osteolysis in pelvic region and soft tissue development. We got him admitted to the best hospital in this city and had the best oncologist here look at him. The oncologist prescribed a PET/CT scan and we got the PET/CT done today morning. The results will come by evening. I'm really worried. I hope everything goes well.