The present communication is a report of a case where histological changes, identical to those described recently to be of condylomatous nature in the genital tract, were found in the bronchial epithelium adjacent to an invasive squamous cell carcinoma. The significance of this finding in the light of squamous cell carcinogenesis is discussed, and the conclusion is drawn that these lesions are worth recording until proved to be unrelated to the carcinogenesis, or to be involved in it.