You are correct and I am not judging her current medical team. If they offered surgery, I am pretty sure Tiffany would agree. What I wondered was in case surgery wasn't YET on the table with her team AND she wanted it removed or a second opinion about removal vs. just wait for the next scans, THEN she should get a second opinion. If she, or any patient anywhere, feels she isn't getting timely treatment, Tiffany is well-poised financially to get a second opinion about surgery vs. waiting for future scan results.
What I mean is that different oncologists might have different opinions and levels of experience that affect the treatment decisions they make on patients. My post wasn't meant to say that private was better. I don't know if she could get a second opinion for free within the NHS system, which is why I mentioned private oncologists.
Remember her initial cancer diagnosis was different at the first hospital. The first hospital had said that the FIRST lung nodule (and, presumably, the only one she had at diagnosis) was a metastasis and that she had Stage 4 cancer. Then, she switched to the Royal Marsden, which said that the lung nodule was benign and that she was at Stage 3, although there was one doctor during one appointment who said she was at Stage 4. Remember that Tiffany had blurted out in the parking lot at that time "Stage 3 or Stage 4, it doesn't matter!" and that she was visibly upset that one doctor had said Stage 4 at the RM.
As it turned out, her first lung nodule was cancerous, and thus the diagnosis from the first hospital was correct from the onset. For this very reason, I would be wary of an 'all-clear' by the RM on the lung nodule. I would probably go back to that first hospital, make an appointment, and have them look at the scan of her second nodule to see what they say.