Lymphoma is a malignant tumor of the hematological system, with early symptoms including painless enlargement of the lymph nodes in the neck, which are generally well-movable and firm or hard in texture early on, without inflammatory changes such as redness, swelling, heat, or pain. Additionally, lymphomas occurring in the gastrointestinal tract can clinically present with symptoms such as upper abdominal fullness and discomfort, bloating, nausea, recurrent acid reflux, and belching. Lymphomas occurring in the respiratory system can manifest clinically with symptoms such as cough, shortness of breath after activity, and chest pain. Lymphomas occurring in the brain can cause dizziness, headaches, movement disorders, ataxia, and abnormal gait.