This resolution designates July 15, 2021, as National Leiomyosarcoma Awareness Day and July 2021 as National Sarcoma Awareness Month. Sarcoma is a malignant cancer that arises from certain tissues, such as bone or muscle; leiomyosarcoma is a type of sarcoma that arises from smooth muscle tissue, most commonly originating in the uterus, stomach, intestine, or blood vessels.