There is a 9mm nodule on the liver, if it is benign it does not matter, if it is malignant it should be further examined or treated in time. There are benign and malignant liver nodules, if found 9mm nodules, should be timely for further examination, such as liver ultrasound, serum alpha-fetoprotein examination, liver pathological tissue examination, etc. If the examination for benign nodules, the patient also does not have obvious discomfort symptoms, you can regularly review follow-up, at this time, the condition is not serious, it does not matter. However, if it is found that the nature of the nodule is malignant after the above auxiliary examinations, the nodule may be nodular primary liver cancer or metastatic liver cancer, which requires further examination and treatment in time. Therefore, if there is a 9mm nodule on the liver, you should go to the hospital in time for relevant examination, and let the doctor judge whether the condition is serious or not.