Children with pneumonia CT shows localized axillary nodes node-like shadow, the first consideration may be the existence of lymph node inflammation, but also need to be combined with the clinical manifestations of a comprehensive judgment. We need to be alert to the possibility of sebaceous cysts and other diseases. 1. Inflammation of lymph nodes: nodular pattern, generally refers to lesions less than one centimeter in size, most of the nodular pattern is benign. Lung CT examination of axillary nodes suggests the presence of enlarged lymph nodes, and most of the causes are related to lymph node inflammation. The enlargement of axillary lymph nodes may be related to lung inflammation and infection, and it is recommended to actively treat lung inflammation and infection, and after lung inflammation and infection are cured, the inflammation of axillary lymph nodes will be improved to a certain extent. 2. Lipoma or sebaceous cyst: when there are lipomas or sebaceous cysts, they can also be manifested as nodular shadow in the axilla, which can be sent to pathological examination after surgical resection if necessary for preliminary diagnosis. CT found axillary lymph node shadow, there are many possibilities, such as tuberculosis can also be combined with lymph node nodular shadow, it is recommended to combine with clinical signs and laboratory tests to make a comprehensive judgment, under the guidance of the doctor to be targeted treatment.