腺せん癌がんせんがんMeanings1nounadenocarcinomamedicineMedical term for a malignant tumor arising from glandular epithelium.肺はい腺せん癌がんは非ひ小しょう細さい胞ぼう肺はい癌がんの一いっ種しゅです。Lung adenocarcinoma is a type of non-small cell lung cancer.