title: Missed pneumothorax seen on ventilation-perfusion scan.
mesh_terms: D000328:Adult; D002637:Chest Pain / Q000209:etiology; D003937:Diagnosis, Differential; D004417:Dyspnea / Q000209:etiology; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D011030:Pneumothorax / Q000150:complications / Q000000981:diagnostic imaging*; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging; D011859:Radiography; D011877:Radionuclide Imaging; D014692:Ventilation-Perfusion Ratio