Romney looks sick. He has that gaunt sunken look these days. Something is wrong with him physically.
These stories play with words. She had a Lobectomy to remove an entire part of her lung - not just “two nodules”. This is done when nodules are too large, cancerous, and can’t be resected or just cut out. There are state of the art less invasive procedures like EBUS or DaVinci robotics to just remove nodules on frail 85 year olds.
https://www.kennedyhealth.org/services/cancer-center/cancer-center-technology
In my opinion (medicalfag), she has metastatic disease from her previous cancers. The pancreas is on the left side and her nodules were left lower lobe lung. It can be unrelated, but given her history she has recurring cancers.
They are possible but not for what she has/had.