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PubMed:642553 JSONTXT

Transbronchial mucus transfer of bronchogenic carcinoma. The metastatic transfer of cells from a primary bronchogenic carcinoma to other portions of the lung as a result of mucus embolization and inoculation has been demonstrated. Histologic observations indicate tumor implantation and survival in peripheral bronchioles. In these regions mucosal dysplasia and carcinoma-in-situ changes which characteristically accompany a primary lesion are notably absent. Morphologic changes associated with acute bronchitis and focally denuded bronchial mucosa may be implicated.

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