Retropharyngeal bleeding in haemophilia.
D000328:Adult; D000402:Airway Obstruction / Q000209:etiology; D006467:Hemophilia A / Q000150:complications*; D006470:Hemorrhage / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D008297:Male; D009333:Neck / Q000000981:diagnostic imaging; D010608:Pharyngeal Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D011859:Radiography