Conversation: The conversation between human and AI assistant.
[|Human|] hello, I am inquiring on behalf of my dad you just had a biopsy today... told there is a tumor on his 3rd rib, right side.  he has lost almost 20lbs, is on pain killers, loss of appetite in a very short period of time, maybe 2 months, what could this mean?
[|AI|]  Thanks for your question on Chat Doctor. In my opinion he should get done PET SCAN to identify the rib lesion and distal spread if occurred. Also get done biopsy from the lesion. Biopsy will be the diagnostic test to confirm cancer. His all symptoms like weightless, pain and mass all are suggestive of cancer only. So we need to get done biopsy to confirm the malignancy. Mostly it is Chen Chat Doctor.  Treatment is based on staging and for staging PET scan is must. So better to consult oncologist and discuss all these.