Retropharyngeal edema, airway obstruction, and caval thrombosis.
D016121:Brachiocephalic Veins; D004487:Edema / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D008173:Lung Diseases, Obstructive / Q000209:etiology; D008297:Male; D010608:Pharyngeal Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D011859:Radiography; D013927:Thrombosis / Q000150:complications / Q000000981:diagnostic imaging*; D014683:Vena Cava, Superior