[Spontaneous regression of a bronchial epidermoid cancer]

A spontaneous regression of epidermoid carcinoma of the bronchus is reported here for only the third time. This report concerns a 57 year old patient suffering from chronic airflow obstruction who had twice required artificial ventilation. Fibroptic bronchoscopy was performed on account of hilar asymetry and a small tumour on the carina of the middle lobe was discovered. The biopsy confirmed the existence of a moderately differentiated invasive epidermoid bronchial carcinoma. An examination performed four years later failed to reveal this tumour. Immunological studies showed only a notable rise in NK cells.