Wet rales are sounds produced by the rupture of a blister formed by the passage of gas through secretions in the respiratory tract during inspiration, such as exudate, sputum, blood, mucus, and pus, or by the bursting of a small bronchial wall trapped and closed by the adhesion of secretions, which suddenly opens up and re-inflates when inspiration is performed. The wet rales are additional sounds to the breath sounds, intermittent and transient, appearing more than once in a row, and are distinct at the end of inspiration or expiration. Wet rales occur in the trachea and main bronchi; medium wet rales occur in the medium bronchi; fine wet rales occur in the small bronchi; and twisted sounds are uniform and consistent wet rales, mostly heard at the end of inspiration. The meaning is the manifestation of lung and bronchial lesions. Wet rales are scattered in distribution and are seen in bronchitis, bronchopneumonia and emphysema. They are distributed at the base of both lungs and are often seen in pulmonary stasis, pulmonary edema, and bronchopneumonia. Unilateral or restricted distribution is seen in pneumonia, bronchiectasis, lung abscess, lung cancer, and lung hemorrhage.