Metastatic Cancer More Condition_symptoms Metastatic Cancer?

Metastatic cancer? - metastatic cancer more condition_symptoms

My father has cancer of the lymph nodes in the neck. After a PET scan, doctors say there were some "hot spots" on the lungs, which could mean a metastatic lung cancer - or perhaps the scars of previous pulmonary infection, which for many years. In any case, the real question - Recently, we found some small pieces (approximately 5) something in the back, shoulders, and on the other side of the neck. You see a little bubble, with the exception of the head and not .. which are quite hard, and of course the pain when you press them. I can not find anywhere on the Internet if it could be cancer ... Can anyone help? Thanks