"What a miracle that the pain I've walked through can be reworked into beauty that makes people all over the world open their eyes wider."

She went on to write: "Since my audition, my health has taken a turn for the worse and the fight with cancer is demanding all of my energy and attention.

Pretty beat up, but I've still got dreams."

"AGT" judge Heidi Klum posted of message of support for Marczewski.

"We will miss your energy, your passion, and your beautiful voice at the live shows," Klum wrote.