Retained nasopharyngeal airway.
Smith
B L
BL
D000328:Adult; D000766:Anesthesia, Dental / Q000295:instrumentation; D000768:Anesthesia, General / Q000295:instrumentation; D005547:Foreign Bodies; D006801:Humans; D008297:Male; D009296:Nasal Cavity; D010614:Pharynx