A Patient with Lymphangitis Presents with Visible Red Lines on the Skin

Multiple Choice

A patient with lymphangitis presents with visible red lines on the skin that are tender to the touch. The best explanation for this sign is that

A) lack of movement has caused pooling of lymph in the vessels, which compromised the lymphatic valves, resulting in varicose lymph vessels.
B) red blood cells have infiltrated the lymphatic system.
C) the spleen has degraded too many red blood cells, releasing iron into the lymphatic system.
D) the vasa vasorum of the infected lymph vessels has become inflamed.