primary lung adenocarcinomametastatic pulmonary adenocarcinomalung adenocarcinoma pathologyadenocarcinoma of lung prognosisadenocarcinoma lung cancer treatmentmultifocal adenocarcinoma lunginvasive adenocarcinoma lunglung papillary adenocarcinomaadenocarcinoma lung smokingacinar adenocarcinoma lungmucinous adenocarcinoma lung treatmentadenocarcinoma in situ lung treatment