[Reflections on the new occupational disease No. 4111: without reasonable doubt Mr. X. in his 70th year suffers from chronic obstructive bronchitis and Mr. Y. from pulmonary emphysema].

Without reasonable doubt Mr. X. suffers from a chronic obstructive bronchitis and Mr. Y. from pulmonary emphysema. With relation to the new occupational disease no. 4111 the safe diagnosis of chronic obstructive bronchitis and of pulmonary emphysema is very difficult. The various aspects are described here.