| 摘要 |
Objective: Insulinoma is the most common functional neuroendocrine tumor of the
pancreas. The problem for the surgeons is the preoperative localizing of the tumor
requiring surgical treatment. The aim of this study was to evaluate the results of the
various image modalities for preoperative localization of insulinoma.
Methods: Patients were diagnosed with insulinoma at the study institute and the
clinical records were analyzed retrospectively. The sensitivities of the different
diagnostic image modalities included abdominal ultrasonography (US), endoscopic
ultrasonography (EUS), computed tomography (CT) scans, and magnetic resonance
image (MRI).
Results: Twenty-one patients who underwent surgical resection were included in
this study. Only one of the patients failed preoperative localization. The sensitivities
of US, EUS, and CT were 33.3%, 61.5%, and 38.5% respectively, but the sensitivity
of MRI was 85.7% (p<0.05). The mean tumor size was 1.5 cm, ranging from 0.8 cm
to 3.0 cm. For tumors less than 1.6 cm, MRI had a better detection rate. The
prognosis of insulinomas was excellent after surgical resection.
Conclusions: In this study MRI with MR cholagiopancreaticograpghy (MRCP)
offered the accurate pinpointing of insulinomas and related vital structures such as
pancreatic ducts and common bile ducts. This is both cost-effective and noninvasive. |
