Does Non-Steroidal Anti-inflammatory Drugs Decrease the Quality of Pleurodesis After Mechanical Pleural Abrasion/Pleurectomy for Treatment of Pneumothorax?

Investigators aim to assess if NSAIDs affect the quality of pleurodesis resulting from mechanical pleurodesis (open surgery or VATS) regarding : Primary outcome: Recurrence of pneumothorax in 6 monthes. (assessed by X ray after 2 weeks and 6 months or symptoms requiring X ray at any timing) Secondary outcome: ▪ Adjusted Length of stay ( from day zero surgery day to discharge ). ▪ Time of removal of the chest Tube .(relatively longer with air leak presence). ▪ Need of opioids (N-SAID may decrease the need of opioids) .