metastatic pulmonary adenocarcinomalung adenocarcinoma pathologyadenocarcinoma of lung prognosisadenocarcinoma lung cancer treatmentmultifocal adenocarcinoma lungprimary lung adenocarcinomainvasive adenocarcinoma lunglung papillary adenocarcinomaadenocarcinoma lung smokingacinar adenocarcinoma lungmucinous adenocarcinoma lung treatmentadenocarcinoma in situ lung treatment