Ectasis is a medical term used to describe an abnormal dilation or expansion of a body part or blood vessel. Some common synonyms for this word include distension, enlargement, expansion, dilation, swelling, and protrusion. Other related terms include aneurysm, which is a localized ballooning of a blood vessel, and hydrosalpinx, which is the dilation of a fallopian tube due to the accumulation of fluid. Ectasis can occur in various parts of the body such as the heart, lungs, colon, and blood vessels. It can be caused by various factors including genetics, infections, and chronic disorders. Early diagnosis and treatment of ectasis can help prevent complications and improve overall health.