I was diagnosed with lung mets last October after investigation into a prolonged cough which showed a number of small nodules in both lungs. In December it was also confirmed there was some mets in one of my vertebra. (My primary diagnosis was in 2003 so quite a long gap between.) The biopsy showed I was ER and PR positive.
The good news is that since starting hormone treatment (Zoladex and Anastrozole), Denosumab to strengthen my bones and some radiotherapy to my spine, the cancer has not spread further, the nodules in my lungs have shrunk and I'm not coughing any more.
Hope that helps.