Intramedullary osteoid osteoma in the humerus of a toddler—A case report and review of the literature oleh Mizuki Hiramatsu, MD, Robert Nakayama, MD, PhD, Tomoki Kasahara, MD, Rumi Nakagawa, MD, Toru Hirozane, MD, PhD, Sayaka Yamaguchi, MD, PhD, Tomoaki Mori, MD, PhD, Naofumi Asano, MD, PhD, Hajime Okita, MD, PhD, Masaya Nakamura, MD, PhD, Morio Matsumoto, MD, PhD