1. Is pathological diagnosis of lymphoma necessary before treatment? A: Yes. Oncologists must need a clear pathological diagnosis before standardizing the treatment of patients. According to the international standard (NCCN), for all lymphoma patients, pathological diagnosis is the most important and is the basis of all subsequent treatment work. 2. Is the pathological diagnosis of lymphoma very complicated compared with other tumors? Is the misdiagnosis rate relatively high? A: There are dozens of types of lymphoma, and the same type of lymphoma may have very diverse pathological manifestations, so it is difficult to diagnose. 3.Does the pathological diagnosis of lymphoma, once wrong, have a great impact on the subsequent treatment? A: Yes. The clinical treatment plan is different for different lymphoma staging, and wrong diagnosis or staging will have a great impact on the subsequent treatment and prognosis of the patient. 4.Can foreign patients come to you for pathological diagnosis? A: Yes. For patients with lymphoma, it is recommended to consult multiple hospitals before treatment, because the first treatment is crucial to the patient’s efficacy, and only accurate diagnosis can lead to correct treatment. 5.What information do I need to bring to patients who want to see you for lymphoma pathology diagnosis? What issues need to be noted? A: For consultation cases, the following information needs to be prepared: (1) Ask the local doctor to write a brief medical history (including the patient’s clinical manifestations and the course of the disease), bring all the laboratory test results, especially the results of peripheral blood and bone marrow examinations, as well as the results of ultrasound, CT, PET-CT and other imaging examinations, and the diagnostic opinions of the pathology department of the local hospital, etc., so as to facilitate comprehensive analysis and judgment; (2) Lend all routine hematoxylin-eosin (HE) stained sections and immunohistochemical sections of this patient from the local hospital pathology department, and ask the local pathology department to select wax blocks containing the most typical lesions and cut about 10 gum coated white slices (sections without staining that can be used for immunohistochemical staining) for further immunohistochemical labeling. The patient does not have to come in person, but a family member or friend can come to the consultation with all the information if physical or other conditions do not allow. Pathology slides are glass and fragile, so care should be taken in carrying them. The slices do not need to be refrigerated and can be stored at room temperature. 6.How long does it take to get the result of lymphoma pathology diagnosis? A: Generally, it takes 2-5 working days, depending on the difficulty of different cases and the completeness of the data. For difficult cases, immunohistochemical markers or molecular biology tests are needed, or the latest literature, discussion in the specialty group, communication with local clinicians or patients, etc., which may take longer time. The patient’s family can leave their phone number and other contact information, and a special staff will notify them to pick up the diagnosis when the results are available.