Malignant tumors originating in other parts of the body often metastasize to the lungs via blood or lymphatic pathways. Statistics show that approximately 30% of cases dying from malignant tumors have pulmonary metastases. Most lung metastases originate from the digestive tract, reproductive system, breast, bones, and urinary system. Isolated pulmonary metastases or localized multiple metastases can be treated with surgical resection, achieving a 5-year survival rate of over 30%.

bubble_chart Clinical Manifestations

1. There are usually no obvious symptoms, and it is mostly discovered during chest X-ray examinations. 2. A small number of patients may experience symptoms such as coughing and blood in the sputum.

bubble_chart Diagnosis

1. History of primary cancer. 2. Chest X-ray shows multiple or single round masses. [Treatment Principles] 1. Surgical treatment is feasible for unilateral single metastatic tumor, ipsilateral 2-3 metastatic tumors, or bilateral limited metastatic tumors, provided the primary follicular tumor has been completely controlled. 2. Bilateral extensive metastatic tumors are not suitable for surgical treatment. 3. The extent of surgical resection should be as conservative as possible, typically involving only wedge resection, segmentectomy, or lobectomy. 4. Postoperative appropriate antitumor drug therapy may be administered based on the pathological diagnosis of the tumor.

bubble_chart Treatment Measures

This disease is quite common in clinical practice, often presenting as multiple lesions, but single lesions can also occur. When diagnosing, it is important to differentiate it from peripheral primary lung cancer. A detailed medical history should be taken, and careful efforts should be made to identify the primary source. The primary source can originate from any part of the body, with common sites including the breast, digestive system, thyroid, genitourinary system, and bones. For relatively localized pulmonary metastatic tumors, surgical resection may be considered as a treatment option.

1. Cured: The source of the disease is removed, and the condition is good. 2. Improved: The source of the disease is removed, and symptoms have alleviated. 3. Not Cured: The source of the disease is not removed.