senile lung cancer

Senile lung cancer is a carcinoma originating from the bronchus-lung, i.e., primary bronchogenic carcinoma, abbreviated as lung cancer. Lung cancer is the malignant tumor that poses the greatest threat to human health and life in today's world. Its clinical manifestations vary depending on the development process of the primary lesion and factors such as the tumor location, tumor size, effect on the bronchus, whether adjacent tracheal structures are invaded or compressed, whether distant organs have metastases, and whether ectopic endocrine characteristics are present, resulting in various different clinical manifestations.