What is the condition caused by an interruption in the lymphatic system that leads to swelling, particularly in the arms?

Lymphedema is the correct condition referring to swelling that occurs due to a blockage in the lymphatic system. This condition specifically involves the accumulation of lymph fluid, which typically occurs in the arms or legs, but can affect other areas of the body. The lymphatic system plays a crucial role in draining excess fluid and maintaining fluid balance within tissues. When this system is interrupted—whether through surgical removal of lymph nodes, trauma, infection, or congenital conditions—it can lead to significant swelling and discomfort known as lymphedema.

Understanding lymphedema is particularly important in various medical and therapeutic contexts, especially for professionals working in healthcare and rehabilitation. It is distinct from other conditions like edema, which is a more general term for swelling due to fluid retention in tissues without the specific involvement of the lymphatic system. Thrombus refers to a blood clot in a vessel, while hyperemia is an excess of blood in a particular area of the body, often due to inflammation or increased blood flow. Each of these conditions has different underlying causes and mechanisms, making lymphedema unique in its association with the lymphatic system specifically.