Irregular 7*13 shadows in the lungs are associated with diseases such as tuberculosis, pneumonia, and lung cancer. Lung shadows are generally defined as punctate, patchy, flaky, nodular, striated, or massy shadows seen on chest X-rays, CT, and other imaging tests. Clinically, irregular shadows can be seen in many diseases, with tuberculosis, pneumonia, and lung tumors being the three most common. Pulmonary cysts, pulmonary infarcts, and pulmonary schistosomiasis are less common. Irregular 7*13 shadows in the lungs indicate the presence of irregular 7*13 shadows in the lungs associated with these diseases. Therefore, irregular shadows in the lungs should be highly valued, as irregular 7*13 shadows in the lungs may also be caused by other reasons, you should first go to the hospital to clarify its cause and then treat it in time.