An 1-month old female newborn was admitted to our hospital because of jaundice which occurred at 2 days after birth. Plain chest X-ray and chest CT revealed a collapsed right middle lobe and lobar emphysema was suspected. Right upper lobectomy of the lung was done and pathologic findings showed an infantile lobar emphysema. After the operation, the newborn was discharged without complication and was followed up through the out patient clinic. Infantile lobar emphysema is rare and male dominant. Left upper lobe of the lung is the most prevalent site. Patients with infantile lobar emphysema complain of respiratory symptoms. We report one case of infantile lobar emphysema on right upper lobe of lung, in a female with no respiratory symptoms.