Non-Hodgkin lymphoma

Lymphoma is a malignant tumor of the immune system originating from lymph nodes and lymphatic tissues. Based on histopathological changes, it can be divided into two main categories: Hodgkin lymphoma and non-Hodgkin lymphoma. Non-Hodgkin lymphoma refers to all malignant lymphomas that are not classified as Hodgkin lymphoma, accounting for 90% of all lymphomas. This disease is more common in individuals over 60 years old, with a higher incidence in males than females. The main manifestations include painless, progressive lymphadenopathy or localized masses, with systemic and diverse symptoms.