The clinical stage of bronchogenic lung cancer is stage 0, which has a very good prognosis and can basically be cured after surgical treatment.
Bronchial carcinoma in situ refers to the confined growth of tumor cells. Bronchial carcinoma in situ refers to heterogeneous proliferating bronchial epithelial cells that are biologically and morphologically similar to tumor cells, accumulating the entire epithelium without invading the basement membrane and growing downward infiltrating, also known as intraepithelial neoplasia, which is a very early manifestation of the tumor. Clinically, the clinical stage of carcinoma in situ is stage 0. As long as the adjuvant examination supports that the lung nodule is carcinoma in situ, surgery is preferred, and surgical treatment can achieve cure after removing the lesion. However, patients with bronchial carcinoma in situ have no obvious clinical symptoms in the early stage, and clinical patients with carcinoma in situ are basically discovered by physical examination or due to examination of other diseases.