My 29 year old son has been diagnosed with a rare form of Osteosarcoma which is at stage 3 and is an aggressive form of cancer. He has completed two cycles of his chemotherapy and had a scan on Christmas Eve. The scan has shown that the tumour, which is in his pelvis, has not grown any further. His consultant has said that the Chemo is killing the cancer cells but is not shrinking the tumour and surgery is not an option. We are confused at this as we don't understand if the chemo is killing the cancer cells why is the tumour not shrieking. Any help would be greatly appreciated as both my husband and i are worried sick that we are not being told everything
