This was my first graphic novel read! It's a very different experience to read a book that is more pictures than words, but I enjoyed it so much.
The book deals with David's childhood - primarily his experience of having surgery to remove a "cyst" only to wake up unable to speak. He finds out later that the cyst was cancer and that the surgery removed tumor, along with a vocal cord and thyroid. His father, a radiologist, later confirms that the frequent x-rays he subjected David to as a child most likely caused the cancer.
David's experience is tragic, and I think telling it in this format makes it much more "real" than just reading it. He's a very gifted artist, and his drawings were fantastic.