title: Intraoperative tension pneumothorax.
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D008875:Middle Aged; D011030:Pneumothorax / Q000000981:diagnostic imaging / Q000209:etiology*; D011175:Positive-Pressure Respiration / Q000009:adverse effects*; D011859:Radiography; D013514:Surgical Procedures, Operative / Q000009:adverse effects*