lung metastatic tumor
Introduction
Introduction to lung metastatic tumors Malignant tumors originating in other parts are very common in the lungs, and most of them are blood transfer. Common primary malignant tumors include the gastrointestinal tract, the genitourinary system and the liver, thyroid, breast, bone, soft tissue, skin cancer and sarcoma. basic knowledge The proportion of illness: 0.003% Susceptible people: no special people Mode of infection: non-infectious complication:
Cause
Causes of pulmonary metastatic tumors
(1) Causes of the disease
Currently no relevant information
(two) pathogenesis
Currently no relevant information
Prevention
Lung metastatic tumor prevention
Metastatic pleural tumor often causes exudative malignant pleural effusion, suggesting that the patient has a systemic metastatic disease with a very poor prognosis.
The prognosis of patients with malignant pleural effusion is very poor. Chernow reported 96 patients. The average survival time after diagnosis was only 3.1 months, 54% died within 1 month, and the mortality rate was 84% at 6 months. The average survival time of 30 patients with lung cancer was 7.3 months. At present, there are no effective measures to prolong the life of patients.
Complication
Metastatic tumor complications Complication
Metastatic pleural tumor often causes exudative malignant pleural effusion, suggesting that the patient has a systemic metastatic disease with a very poor prognosis.
If one leaf or the main bronchus is blocked by the tumor, the lung tissue at the distal end of the obstruction becomes involuntary, and the transitional expansion of the remaining lung tissue or the ipsilateral thoracic invagination can lead to an increase in the pleural negative pressure. If the bronchial obstruction causes distal pneumonia, a pneumonia-like pleural effusion can be formed.
Symptom
Symptoms of pulmonary metastatic tumors Common symptoms Difficulty breathing
Most of the cases have no obvious manifestations. A few cases can have symptoms such as cough, blood stasis, fever and dyspnea. Generally, chest X-ray examination is only found when treating patients and patients with primary tumors.
Examine
Examination of lung metastatic tumors
Cytological examination, the positive rate is very low.
1. X-ray and CT examinations were multiple lesions with different sizes, uniform density, and clear contours. In a few cases, there was only a single metastatic lesion in the lungs.
2. There is no characteristic performance of bronchoscopy, which does not help the diagnosis.
Diagnosis
Diagnosis and differentiation of lung metastatic tumor
According to the X-ray findings of the lungs, combined with the diagnosis or medical history of the primary cancer, lung metastatic tumors can generally be diagnosed.
A single lung metastatic tumor is difficult to distinguish from primary peripheral lung cancer. For example, understanding the primary tumor, combined with CT-guided biopsy can be clear.
