👉 Interstitious is a medical term that refers to an abnormal or irregular growth of tissue within the lining of a blood vessel. This can occur due to conditions such as blood clots, inflammation, or other diseases that cause the vessels to become narrowed or damaged. Interstitial tissue can be found in many different organs and tissues throughout the body, including the lungs, heart, liver, and kidneys. Interstitial tissue is characterized by irregular growths of cells that are not normally present in normal blood
