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Fig. 4 | Orphanet Journal of Rare Diseases

Fig. 4

From: A total pleural covering of absorbable cellulose mesh prevents pneumothorax recurrence in patients with Birt-Hogg-Dubé syndrome

Fig. 4

Frequency of pneumothorax episodes before and after the pleural covering surgery. a Comparison of the frequencies of pneumothorax episodes before and after Lower Pleural Covering (LPC): The number of pneumothorax episodes was divided by the observation period (number of months from the first pneumothorax episode to LPC or number of months after LPC). The frequency of pneumothorax (episodes/month) was significantly reduced after LPC (P <  0.001, Student t test). b Comparison of the frequencies of pneumothorax episodes before and after Total Pleural Covering (TPC): The number of pneumothorax episodes was divided by the observation period (number of months from the first pneumothorax episode to TPC or those after TPC). The frequency of pneumothorax (episodes/month) was significantly reduced after TPC (P <  0.001, Student t test)

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Orphanet Journal of Rare Diseases

ISSN: 1750-1172