Abstract
Isolated submandibular suppurative sialadenitis is extremely rare in newborn infants and is associated with prematurity and prolonged gavage feeding. This report describes a premature infant who developed a life-threatening airway obstruction due to suppurative submandibular sialadenitis. The diagnosis was made on clinical grounds and confirmed by ultrasonography. Staphylococcus aureus was grown from the pus expressed from the Wharton's duct orifice. Upper airway obstruction and respiratory failure were managed with intubation and mechanical ventilation, and the sialadenitis resolved quickly and completely with flucloxacillin treatment. Possible causes of sialadenitis include dehydration, decreased saliva flow and stasis during gavage feeding, duct obstruction by stones and direct bacterial inoculation. Ultrasonography is the diagnostic imaging of choice to exclude congenital tumours, lymphadenitis, congenital malformations of the Wharton's duct or the gland itself, and subcutaneous fat necrosis. Early diagnosis and antibiotic treatment of suppurative submandibular sialadenitis may prevent complications such as abscess formation, septicaemia and respiratory failure.
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