| Theme |
Update on Pancreatic Neuroendocrine Tumors |
| Title |
Trends in the Epidemiology of Pancreatic Neuroendocrine Tumors in Japan |
| Author |
Tetsuhide Ito |
Neuroendocrine Tumor Centre, Fukuoka Sanno Hospital / International University of Health and Welfare |
| Author |
Takashi Fujiyama |
Neuroendocrine Tumor Centre, Fukuoka Sanno Hospital |
| Author |
Toshihiko Miyahara |
Neuroendocrine Tumor Centre, Fukuoka Sanno Hospital |
| Author |
Masayuki Hijioka |
Neuroendocrine Tumor Centre, Fukuoka Sanno Hospital / Department of Gastroenterology, National Kyushu Medical Center |
| Author |
Nao Fujimori |
Depertment of Nursing, Fukuoka Sanno Hospital |
| Author |
Yuki Yonekura |
Department of Pathology, Fukuoka Sanno Hospital |
| Author |
Masazumi Tsuneyoshi |
Neuroendocrine Tumor Centre, Fukuoka Sanno Hospital / Department of Pathology, Fukuoka Sanno Hospital |
| [ Summary ] |
Pancreatic neuroendocrine tumors (PNETs) have been considered an extremely rare disease. However, in recent years, the number of patients with PNETs has increased rapidly. We conducted a study of the epidemiology of PNETs in Japan in 2005. Next, we conducted a second survey of patients with PNETs who received treatment in 2010. A total of 3,379 individuals received treatment for PNETs in 2010. The number of patients in 2010 was about 1.2 times greater than that in 2005. Non-functional-PNETs constituted approximately 65 %, followed by insulinoma (20.9 %) and gastrinoma (8.2 %). When treating PNETs, it is necessary to correctly evaluate the functionality and progression of the tumors, the presence or absence of metastasis, and the degrees of differentiation and malignant potential of tumors. A new registration system from the Japan Neuroendocrine Tumor Society was introduced in 2015, which may help further global dissemination of Japanese epidemiological information. |