Moderately differentiated adenocarcinoma does not determine what stage it belongs to. Depending on the degree of tissue cell differentiation, it is mainly divided into highly differentiated, moderately differentiated, poorly differentiated and undifferentiated carcinomas. The higher the degree of differentiation, the less malignant it may be and the earlier the stage. Intermediate-differentiated adenocarcinoma is between highly differentiated and poorly differentiated, and it may belong to the middle stage, which can be treated by surgery. If the adenocarcinoma is in the lung, genetic testing can be done to determine whether it can be treated with targeted drugs.