Is lung cancer contagious?

Written by Liu Liang

Oncology

Updated on September 29, 2024

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The occurrence of lung cancer is associated with smoking, air pollution, and working in environments such as coal mining. However, lung cancer is not contagious. Therefore, in clinical settings, family members of patients often ask doctors whether lung cancer can be transmitted through the respiratory tract. It can be assured that lung cancer is not contagious; only communicable diseases like tuberculosis can be spread this way.

Other Voices

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Written by Gong Chun

Oncology

1min 37sec

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How is lung cancer treated?

For the treatment of lung cancer, it should currently be based on a comprehensive treatment method tailored to the patient's age, specific condition, nutritional status, economic condition, and the capabilities available at the hospital. It is particularly related to the stage of the disease and the type identified in the tissue biopsy. Currently, lung cancer primarily adopts a multidisciplinary comprehensive treatment approach spearheaded by surgical intervention. Surgical treatment is the preferred method for lung cancer, but since it is a systemic disease, surgery alone cannot completely address the issue. Therefore, it must be combined with radiotherapy, chemotherapy, and other treatments in a multidisciplinary and comprehensive approach. Additionally, immunotherapy and targeted therapy are inseparable and crucial parts of integrated treatment strategies for lung cancer. If the disease is staged and involves adenocarcinoma or squamous cell carcinoma of the lung, surgical treatment is recommended followed by adjuvant radiotherapy or chemotherapy, or targeted and immunotherapy. If surgery is not possible, some supportive treatments can be considered. For small-cell lung cancer, surgery is not recommended because it offers no benefit; instead, a combined approach of chemotherapy and radiotherapy is advised.

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Written by Yang Feng

Pulmonology

43sec

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Symptoms of lung cancer transformation in chronic obstructive pulmonary disease

Lung cancer is a complication of chronic obstructive pulmonary disease (COPD), but it is relatively less common for COPD patients to also have lung cancer. Regular health check-ups, including annual lung CT scans, can help identify the possibility of cancerous changes at an early stage. In the early stages of lung cancer, patients generally do not show obvious clinical symptoms. As the disease progresses, symptoms such as coughing up blood, weight loss, fatigue, and night sweats may occur. However, since the clinical symptoms of lung cancer are similar to other lung diseases, there are no typical clinical features, and imaging studies are needed for preliminary screening.

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Written by Gong Chun

Oncology

1min 19sec

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What causes lung cancer?

Lung cancer is caused by a variety of factors. Research indicates that lung cancer results from a combination of genetic defects, external and internal environmental factors, and personal factors. Numerous studies have confirmed that long-term and heavy smoking is the most significant carcinogenic factor for lung cancer. There is a positive correlation between the amount and duration of smoking and the incidence of lung cancer. The second factor is related to working in asbestos-related industries, which very much relates to the work environment, and also has a certain relation to smog. Indoor environmental pollution is also a very significant carcinogenic factor for lung cancer. This includes smoke from burning coal indoors, fumes from cooking oils in kitchens, and carcinogenic substances released by indoor decorating materials. Fourthly, internal human factors such as the immune status, metabolic abnormalities, genetic factors, and chronic lung infections are also related. The fifth factor involves irregular diet and rest habits, irritating foods, alcohol consumption, and heavy smoking.

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Written by Gong Chun

Oncology

1min 13sec

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Early symptoms of lung cancer

Early-stage lung cancer, especially peripheral lung cancer, often has no symptoms and is mostly found during chest X-rays or CT scans. The clinical symptoms of lung cancer are closely related to the location, size, pathological type of the tumor, whether it compresses or invades adjacent organs, and whether there is metastasis. The symptoms of lung cancer generally include: First, some symptoms of the primary tumor growing locally, including cough, hemoptysis, difficulty breathing, and chest pain. When the tumor grows inside a larger bronchus, it might cause some irritative coughing. Second, as the tumor continues to grow and affects the drainage of the bronchi, it may lead to secondary lung infections, presenting with symptoms such as cough and purulent sputum. Third, there might be bloody sputum streaked with blood or intermittent minor hemoptysis, though significant hemoptysis is very rare.

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Written by Han Shun Li

Pulmonology

44sec

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Is coughing up blood lung cancer?

Everyone knows that lung cancer can cause coughing up blood, but does coughing up blood necessarily mean one has lung cancer? It should not be interpreted this way. Although lung cancer can cause coughing up blood, there are many reasons for coughing up blood, and it is not only caused by lung cancer. Reasons for coughing up blood can also include bronchitis, pneumonia, bronchiectasis, tuberculosis, lung abscess, and many others. Therefore, if coughing up blood occurs, it doesn't necessarily mean one has lung cancer, and there is no need for excessive worry. If coughing up blood occurs, it is important to visit a hospital in a timely manner, where a doctor can conduct checks like chest X-rays to further investigate the cause.