Thoracic pyogenic infectious spondylitis presented as pneumothorax: A case report

Table 1 Characteristics of primary and secondary pneumothorax (according to Bobbio et al[17])

	Primary spontaneous pneumothorax	Secondary spontaneous pneumothorax
Proportion of all spontaneous pneumothorax, %	85	15
Patient age, yr	35 ± 18	53 ± 20
Sex, male: female	76: 24	80: 20
Underlying lung disease	No	Yes
Clinical picture	Often complaint-free	Depending on severity of the underlying lung disease
Concurrent diseases	Rare	Frequent