After lymph node dissection patients may experience fever, localized fluid retention, pain, and infection. Specific instructions are as follows: Lymphatic cleansing is performed on patients with solid tumors by removing the tumor while observing whether the lymph nodes around the tumor have been invaded. The purpose is to determine the scope of the next treatment, or to determine what the prognosis is. The rate of spread of tumor cells will be reduced after clearance, but lymphatic clearance also has negative effects, which can cause the surgical wound to increase, as well as the possibility of generating more fluid or blood accumulation locally, which can cause a significant increase in the chance of local infection. Lymphatic cleansing is only suitable for the treatment of most solid tumors. For hematologic malignancies such as lymphomas, it is not possible to perform a sweep. Because lymphoma patients’ tumors are systemic and most of the lymph nodes in the body are malignant, they cannot be cleared by surgery and can only be treated with chemotherapy, radiotherapy, or hematopoietic stem cell transplantation.