Anna Rahm spent her senior year of high school enduring chemotherapy sessions, blood and platelet transfusions and multiple surgeries, including the amputation of her right leg in October.

But last week, the 18-year-old from Chatsworth, California, was able to receive her diploma and attend a one-of-a-kind prom with nearly 200 other teenagers also living with a life-threatening illness.

The annual No Worries Now prom is the brainchild of 20-year-old Fred Scarf. The event is intended to give the teens an opportunity to celebrate their life and their youth in an environment of acceptance and camaraderie.

WATCH the video below, or read the CNN Heroes story here…