1. 1) Albores-Saavedra J, Henson DE, Klimstra DS. (2000) Tumor of the gallbladder, extrahepatic bile ducts, and ampulla of Vater. Atlas of tumor pathology. Third series fascicle 27. Washington DC: Armed Forces Institute of Pathology; p. 191-215.
2. 2) Nagakawa T, Kayahara M. (2005) The ideal of the diagnosis and treatment for biliary tract cancer. Tokyo: Kanehara; p. 67. (in Japanese)
3. 3) Sobin LH, Gospodarowicz MK, Wittekind C, International Union against Cancer. (2010) TNM classification of malignant tumours. 7th ed. Chichester, West Sussex, UK ; Hoboken, NJ: Wiley-Blackwell; xx, 309 p. p.
4. 4) Hamilton SR, Aaltonen LA. (2000) World Health Organization classification of tumors. Pathology and genetics of tumors of digestive system. Lyon: IARC Press; p. 206-214.
5. 5) Haratake J, Yamada H, Horie A, Inokuma T. (1992) Giant cell tumor-like cholangiocarcinoma associated with systemic cholelithiasis. Cancer; 69(10):2444-2448.