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To clarify the bronchoscopic findings in metastatic spread to the bronchi, we analyzed the records of 65 cases of metastatic pulmonary disease in which fiberoptic bronchoscopy had been done. Forty-five patients (69.2%) had abnormal bronchoscopic findings. These patients could be divided into three groups, according to bronchoscopic findings and route of metastatic spread to the bronchi: endobronchial metastasis (n=15), bronchial involvement (that is, direct extension to the bronchi from adjacent metastatic foci, n=15), and lymphangitis carcinomatosa (n=15). Breast cancer and colon cancer were common in cases of endobronchial metastasis, and the bronchial tumor often presented as a polypoid or nodular lesion covered with necrotic material. Submucosal swelling with an irregular margin and narrowing of the bronchial lumen were seen in cases of bronchial involvement. In conclusion, each type of primary extrapulmonary tumor is associated with characteristic endobronchial findings of pulmonary metastases such as endobronchial metastasis and bronchial involvement, which should be discriminated if possible, because of their different metastatic process.

Evaluation of Bronchoscopic Findings in Patients with Metastatic Pulmonary Tumor.