In a recent issue of the European Respiratory Journal, MASSONGO et al. [1] reported the results of a prospective study dealing with ambulatory management of primary spontaneous pneumothorax (PSP) using a pigtail catheter with one-way valve in a series of 60 consecutive patients. The authors reported a success rate of 83%, a 1-year recurrence rate of 17% and full outpatient management in 50% of ...