Can a local tumor in the lung spread to develop bone metases without affecting the rest of the lungs?

My father has been diagnosed with non-small carcinoma in the right lung. The doctors also found a lesion in the back bone L4 which is reported as neoplastic. A biopsy on the lung tumor was performed and confirme malignancy. On that basis they are presuming that the bone lesion is also a malignant cancer tumor. However, what seems to be strange is that the CT scan results for the rest of the right lung, the left lung, abdomin, intestines, bladder, prostate, pancreas are totally clear. His oncology blood markers are also clear. The bone scan apart from the suspected lesion at L4 is totally clean, and his blood test results are acceptable. His general health conditions are good. He was on a diet, stopped it and gained 3KGS within a span of 10 days. He simply does not show any of the symptoms of a stage IV cancer patient. The doctors said they cannot operate because of the bone lesion. Had it been only in the lungs they would. We are concerned that they might be making the wrong connection

definitely get a second or third opinion.. this is too important!

Have you gone for a second opinion?? Even a third??? Never doubt yourself or your intuition. I would definetely bring these reports and finding to another surgeons, maybe even a third.

I would get a 2nd opinion...that is too scary. Im sorry to hear that.

Can they biopsy the lesion on the back bone???? I would suggest getting other information and opinions. Doctors are not god and often get things wrong. My Mum was diagnosed with stage 4 kidney cancer in may this year. when found it had spread to the liver and lung. It took them months, three biopsys and numerous intrusive tests to find the primary source. They diagnosed her with bowel cancer at the start (which she didnt even have!!!) because the biopsy of the liver came back typical of a colon cancer. After a coloscopy they realised she didnt even have a polp in her bowel. they re biopsied the kidney and it was confirmed stage 4. By this time the cancer had grown over 75% the tumor in the liver over 13cm. The indecisiveness from the doctors delayed any treatment and destroyed any quality of life she had left. I know this is different to your situation but the point i am making is yes they CAN make the wrong connection. Mum past away sept 7.