Lymphology Association of North America (LANA) Practice Exam

Which condition is characterized by inflammation of tissues around lymph vessels, often linked to infection?

1. Lymphedema

2. Cellulitis

3. Dermatitis

4. Thrombosis

The correct answer is: Cellulitis

The condition characterized by inflammation of tissues surrounding lymph vessels and often linked to infection is cellulitis. This skin infection occurs when bacteria enter through breaks in the skin, leading to inflammation and swelling, particularly in the dermal and subcutaneous layers. Since lymph vessels are responsible for draining excess fluid and transporting immune cells, cellulitis can significantly affect lymphatic function. This can result in complications such as lymphedema, where fluid accumulates due to impaired lymphatic drainage. Lymphedema itself refers to the accumulation of lymph fluid due to a compromised lymphatic system, but it is not primarily an inflammatory condition. Dermatitis involves inflammation of the skin without a direct cause related to lymphatic vessels or infection. Thrombosis refers specifically to the formation of a blood clot within a blood vessel and does not directly relate to inflammation of tissues around lymph vessels. Hence, cellulitis is the most accurate choice reflecting the association between tissue inflammation, lymphatic involvement, and infection.