1. 1) Remsen, K., Lawson, W., Biller, H. F., et al. : Unusual presentations of penetrating foreign bodies of the upper aerodigestive tract. Ann. Otol. Rhinol. Laryngol. (Suppl.), 105 : 32-44, 1983.
2. 2) Foo, T. H. : Migratory fish bone in the thyroid gland. Singapore Med. J., 34 : 142-143, 1993.
3. 3) 山下 勝,平野 滋,金子賢一.他:陳旧性の食道腔外異物例.日気食会報,53:45-48,2002.
4. 4) Sergi, B., Contucci, A., Celidonio, B. A., et al. : Fish bone migration through the thyroid gland in the neck. J. Otolaryngol., 31 : 396-398, 2002.
5. 5) Masuda, M., Honda, T., Hayashida, M., et al. : A case of migratory fish bone in the thyroid gland. Auris Nasus Larynx, 33 : 113-116, 2006.