Rhonchi are abnormal lung sounds that can be heard during breathing. They are often described as low-pitched, snoring, or rumbling noises. These sounds occur when air flows through narrowed airways, typically due to mucus, inflammation, or other obstructions. Rhonchi are commonly associated with conditions like bronchitis or chronic obstructive pulmonary disease (COPD). Healthcare professionals often use a stethoscope to listen for rhonchi during a physical examination. Identifying these sounds can help in diagnosing respiratory issues and determining the appropriate treatment. While rhonchi may indicate a problem, they can sometimes clear with coughing or deep breathing.