Right middle lobe nodule is found in the imaging examination of the right middle lobe of the lung diameter of 3cm or less in the high-density shadow, in the clinical less than 3cm lesions become nodules, more than 3cm becomes a mass. When the discovery of lung nodules need to go to the regular hospital in time. Nodules in the middle lobe of the right lung may be single or multiple nodules, some people may have related symptoms, but most people may not have discomfort. Some people may have long-term smoking or poor working and living conditions, phlegm clots, chronic inflammation of the lungs, infection with tuberculosis bacteria or parasites, etc., which may cause cystic, substantial or mixed nodules to appear in the lungs; a few people may have a history of chest trauma, which leads to localized exudation or bleeding in the lungs, etc., which may also lead to the development of right middle lobe lung nodules. Right middle lobe nodules cannot be ruled out as malignant tumors, and are often accompanied by symptoms such as cough, hemoptysis, and chest pain, or they may be found during a physical examination without any discomfort. Regardless of whether symptoms are present or not, it is advisable to consult a thoracic surgeon as soon as possible after the discovery of a right middle lobe nodule in order to provide an appropriate diagnosis and treatment plan according to the actual situation of the individual.