carcinoma cell lung adenocarcinoma cell A type of bronchogenic carcinoma made up of cuboidal or columnar cells in a discrete mass, usually at the periphery of the lungs. Most such tumors form glandular structures containing mucin, although a minority are solid and without mucin. Growth is slow, but there may be early invasion of blood and lymph vessels, giving rise to metastases while the primary lesion is still asymptomatic. BTO:0002057 BrendaTissueOBO pulmonary adenocarcinoma cell non-small cell lung cancer cell