Contrast-Enhanced Endoscopic Ultrasonography Improves the Preoperative Localization of Insulinomas

Autor: Yoshihisa Suminaga, Hiroyuki Tamemoto, Michio Imawari, Aki Ikoma, Takafumi Hyodo, Yasuko Sugiura, Keizo Kasono, San-e Ishikawa, Kazuyuki Namai, Masanobu Kawakami
Rok vydání: 2002
Předmět:
Zdroj: Endocrine Journal. 49:517-522
ISSN: 1348-4540
0918-8959
DOI: 10.1507/endocrj.49.517
Popis: We report a case in which endoscopic ultrasonography (EUS), intraductal ultrasonography (IDUS) and contrast-enhanced EUS using Levovist helped to localize insulinoma correctly. A 74-year-old woman complained of symptomatic fasting hypoglycemia with relatively high concentration of serum insulin level. Dynamic contrast-enhanced computed tomography revealed a small tumor of 8 mm diameter in the pancreatic head. Insulin secretion was strongly stimulated by calcium injection into the gastroduodenal artery. To clarify the precise localization, we performed EUS, IDUS and contrast-enhanced EUS. The tumor was enhanced clearly by Levovist, and the distance from the main pancreatic duct was more than 3 mm. Therefore, a preoperative decision could be made to use the enucleation method for resection of the tumor. The surgeon could enucleate the tumor in a brief operation according to the preoperative diagnosis, and serum glucose levels returned to normal range after the operation. Contrast-enhanced EUS using Levovist was shown to be a useful diagnostic method for precise localization of small insulinoma.
Databáze: OpenAIRE