A method and system of providing therapy to a patient's uterus. The method include the following steps: inserting an access tool through a cervix and a cervical canal into the uterus; after inserting the access tool into the uterus, inserting a vapor delivery tool through an access tool lumen; delivering vapor through the vapor delivery tool into the uterus; and condensing the vapor on tissue within the uterus. The system has an access tool, the access tool being adapted to be inserted through a human cervical canal to place an opening of the access tool lumen within a uterus when the access tool is inserted through the cervical canal; and a vapor delivery mechanism, the vapor delivery mechanism having a vapor delivery tool and a vapor source, the vapor delivery tool being adapted to be inserted through the access tool to deliver condensable vapor from the vapor source to the uterus, the condensable vapor being adapted to condense within the uterus.