Although bilateral artificial pneumothorax was introduced about a quarter of a century ago, there still exist wide differences of opinion as to the value of this form of therapy in the treatment of pulmonary tuberculosis and as to the type of condition to be selected for its use. When bilateral application of such a measure as phrenicotomy or thoracoplasty or a combination of these procedures with or without pneumothorax is considered, the variation in opinion is still wider.
In view of these circumstances it is felt that the addition of another paper to the literature, recording my experience in a comparatively large series of cases observed over a period as long as five years, will add clarity to the subject. This study comprises, in all, 211 cases in which pneumothorax was attempted bilaterally, with results as regards the availability of a pleural space as revealed in table 1. As will