“…13 During further treatment with interferon-a squamous cell carcinoma of the bronchus was diagnosed in the patient included as case 1 in previous reports. 3,4 Squamous cell carcinomas of the bronchus are rare in the first three decades of life, and in 1981, another case was reported.5 However, several patients in this age group in whom a bronchogenic carcinoma developed during the evolution of juvenile laryn¬ geal papillomatosis have not been included in this series.6"9…”