What is the definition or description of: aromasin (exemestane)?

AI: Aromasin (exemestane) is a steroidal aromatase inhibitor that permanently blocks the activity of the enzyme aromatase, blocking the conversion of adrenal androgens into estrogen by peripheral tissues (such as fatty tissue). It is currently used for treatment of er positive, early or advanced stage breast cancer.

An AI: This is a drug that inhibits the formation of estrogen from other precursors found in other organs. It is usually used for breast cancer. It is a steroidal aromatase inhibitor.