Lymphadenitis means inflammation of the lymph nodes.

• A. Inflammation of the lymph nodes
• B. Infection of the lymph nodes
• C. Growth of the lymph nodes
• D. Fluid in lymphatic vessels

Answer: (B)

In medical terms, -itis means inflammation, and the root aden- (from lymphaden-) refers to a lymph node. Putting it together, lymphadenitis means inflammation of the lymph nodes. That precise meaning is why this answer fits best: it describes the process happening to the lymph nodes, not the cause (infection), a change in size, or fluid in the vessels. Infections can lead to inflammation, but the term itself specifies inflammation. Growth would point to a condition like lymphadenopathy or lymphadenomegaly, and fluid in lymphatic vessels is associated with lymphedema or a lymphatic obstruction.