A primary lung cancer was found in the apex of the lung of a 78-year-old woman who never smoked Microscopically, the tumor was composed of mucus-secreting cuboidal cells arranged in gland-like structures. This tumor is most likely
A) an adenocarcinoma
B) a squamous cell carcinoma
C) a small cell carcinoma
D) a large cell carcinoma
E) a carcinoid tumor

Question

Quizplus · Accepted Answer

This tumor is an adenocarcinoma. Adenocarcinomas are the most common form of cancer that occurs in peripheral parts of the lungs in nonsmokers.

A Primary Lung Cancer Was Found in the Apex of the Lung