[Diagnostic pitfalls in childhood acute obstructive dyspnea].

Diagnosis of an acute obstructive dyspnea is very difficult because there are many possible causes. The authors reported the case of a 3.5-year-old boy with an atopic status who presented iterative asthma attacks which evolute to severity in spite of an appropriate therapy. Then suffocation occurred with a serious infectious context. The cause of the disease was diagnosed by respiratory tract endoscopic exam which allowed to detect a laryngeal papillomatis. The surgical extraction of this tumour cured the patient. Physiopathology of acute obstructive dyspnea in child was discussed. Upper airway obstructions are separated from lower pulmonary diseases. Two syndromes are very difficult to separate among upper airway obstructions: spasmodic laryngitis and subglottal laryngitis. They are considered in fact as different outward signs of the same disease: subglottal laryngitis is the infectious evolutive form of a spasmodic laryngitis in which atopic status exists. Laryngeal papillomatosis would be a favourising factor of infection. The authors conclude that respiratory tract endoscopic exam is very important to diagnose childhood acute obstructive dyspnea.