Vesicular sounds are a type of normal breath sound heard during auscultation of the lungs. They are soft, low-pitched sounds produced by air moving through the small airways and alveoli in the lungs. These sounds are typically heard over most lung areas, especially during inhalation, and indicate healthy lung function. These sounds can be distinguished from other breath sounds, such as bronchial sounds, which are louder and higher-pitched. Abnormal changes in vesicular sounds may indicate respiratory issues, such as pneumonia or pulmonary edema, and can be assessed using a stethoscope during a physical examination.