Which of the following statements is true about lymphedema?

Lymphedema is indeed characterized by the swelling of tissues due to the accumulation of lymph fluid. This condition typically arises when there is a disruption in the lymphatic system, which can occur from various causes such as surgical removal of lymph nodes, radiation therapy, trauma, or infections. The lymphatic system is responsible for transporting lymph fluid throughout the body, and when it is unable to perform this function properly, lymph fluid can build up, leading to swelling in the affected areas, often the arms or legs. Understanding lymphedema is crucial for medical administrative professionals, as they may encounter patients dealing with this condition and need to facilitate appropriate treatment and support.

The other options don't accurately describe lymphedema. For instance, there is no definitive blood test to confirm lymphedema; diagnosis is generally made based on clinical examination and patient history. While lymph node removal can be a factor leading to lymphedema, it is not a treatment approach to stop symptoms—instead, management often includes physical therapy and compression garments to alleviate swelling. Additionally, lymphedema is not primarily a result of a weakened immune system, though underlying conditions affecting immunity can sometimes contribute to its development.