Lymphoma

A painless lymph node that persists or enlarges can be mistaken for a minor infection, especially when the patient otherwise feels well. Concern rises when the node is firm or rubbery, when several nodal regions are involved, or when lymphadenopathy occurs with drenching night sweats, unexplained fever, or unintentional weight loss. These findings do not diagnose lymphoma; they identify a pattern that needs timely assessment by the prescriber or oncology team. Two questions organize the work-up: what type of lymphoma is present, and how far has it spread? An excisional biopsy preserves lymph-node architecture so pathology can classify the disease. PET-CT then maps metabolically active disease and supports staging. Subtype, stage, symptoms, comorbidities, and treatment goals guide the prescribed regimen. The same model continues after therapy begins. Each regimen creates a specific pattern of laboratory, organ, infection, infusion, and immune-related risks. Fever during chemotherapy is never a finding to defer until the next appointment; the patient follows the oncology fever plan immediately because febrile neutropenia can progress rapidly.