Primary and Secondary Spontaneous Pneumothorax: Prevalence, Clinical Features, and In-Hospital Mortality

Table 4

Recurrence rates of pneumothorax in the PSP and SSP groups.

	Cases	(%)
Nonsurgical treatment (drainage with/without pleurodesis or observation only)
PSP	58	24.5
SSP	39	17.4
Surgery (with/without pleurodesis)
PSP	10	2.7
SSP	2	1.9

PSP, primary spontaneous pneumothorax; SSP, secondary spontaneous pneumothorax.