Question: What is (are) Mondor disease ?
Answer: Mondor disease is a rare condition that is characterized by scarring and inflammation of the veins located just beneath the skin of the chest. The affected veins are initially red and tender and subsequently become a painless, tough, fibrous band that is accompanied by tension and retraction of the nearby skin. In most cases, the condition is benign and resolves on its own; however, Mondor disease can rarely be associated with breast cancer. Although the condition most commonly affects the chest, Mondor disease of other body parts (including the penis, groin, and abdomen) has been described, as well. Mondor disease is thought to occur when pressure or trauma on the veins causes blood to stagnate. In most cases, the condition arises after recent breast surgery, but it can also be associated with physical strain and/or tight-fitting clothing (i.e. bras). Treatments are available to help relieve symptoms until the condition resolves.
Source: GARD