Wet lung disease, also called transient tachypnea of the newborn, retention of fetal lung fluid, or transient respiratory distress of the newborn, occurs when there is slow or incomplete clearance of lung fluid. Normal lung fluid is cleared through the bronchi by the thoracic squeeze during vaginal delivery, and through lymphatics and capillaries [1]. Conditions that predispose to wet lung disease include cesarean section, precipitous delivery, and very small, hypotonic, or sedated infants [1,2]. Patients with this disease typically have mild or moderate respiratory distress sometime in the first 4 hours of life.
        The roentgenographic findings are mild to moderate overaeration, symmetric parahilar patches or streaks, and occasionally mild cardiomegaly or pleural effusions [3]. The right lung may be more opacified than the left. The chest film returns to normal by 48-72 hours of age.