A right lung micronodule is usually a descriptor of an imaging test and can often appear as a small nodule on the right side of the lung that requires prompt medical attention. Micronodules on the right side of the lung are usually detected on chest radiographs or chest CT, and are usually less than 2 cm in size, can be single or multiple, and need to be taken seriously. Common causes of micronodules include inflammation and tumors. When the lungs are infected by bacteria or viruses, it may cause inflammation in the lungs, which in turn stimulates the local tissues and forms small nodules or micronodules; in addition, tumors in the early stage often appear as tiny nodules, which need to be surgically removed in a timely manner to avoid the progression of the disease that may affect the life and health of the patient. It is recommended that patients who find nodules in the right lung should consult a doctor as soon as possible to clarify the cause of the disease and to treat the cause and symptoms of the disease.