Is there a relationship between lung cancer and pulmonary nodules?

The meaning of lung tumor is quite extensive. However, in lung tumors, the proportion of lung cancer is very high, so we should be highly vigilant. Lung cancer only refers to malignant tumors formed by alveolar and bronchial epithelial cells at all levels, and tumors in other lung tissues do not belong to lung cancer. In other words, lung cancer is a kind of lung tumor, including lung cancer, but not necessarily lung cancer.

Benign lung tumor means that the cells that make up the tumor are similar to normal cells, but their tissue structure is different from normal tissue structure, and they do not have the function of normal tissue, and the cells proliferate abnormally and pile up into pieces, forming tumor-like deformity; But this kind of cells proliferate slowly, and will not spread to the whole body or metastasize. Hamartoma is the most common benign tumor in the lung. From the name of the tumor, we can know that it is caused by the disorder of tissue growth. Hamartomas in different patients can be composed of cartilage, glands, smooth muscle, blood vessels, fat and fibrous tissues in different proportions. Sometimes only a small piece of tissue is taken for examination, which can be distinguished from other benign tumors, such as chondroma, leiomyoma, hemangioma, lymphangioma, lipoma, fibroma, neurogenic tumor, benign teratoma and so on. In addition, there are rare benign mesothelioma, such as inflammatory pseudotumor, sclerosing hemangioma, tuberculoma, sarcoidosis, bronchial pulmonary cyst and other granulomatosis.

Besides lung cancer, lung malignant tumors include malignant lymphoma, lung sarcoma (squamous cell carcinoma and fibrosarcoma-like components), pulmonary blastoma, lung sarcoma (including leiomyosarcoma, fibrosarcoma, rhabdomyosarcoma, liposarcoma, angiosarcoma and chondrosarcoma), malignant papillomatosis, malignant mesothelioma, malignant neurogenic tumor, malignant teratoma and malignant hamartoma.