TITLE

EUS-FNA for Pancreatic Neuroendocrine Tumors: A Tertiary Cancer Center Experience

AUTHOR(S)
Atiq, Muslim; Bhutani, Manoop; Bektas, Mehmet; Lee, Jeffrey; Gong, Yun; Tamm, Eric; Shah, Chintan; Ross, William; Yao, James; Raju, Gottumukkala; Wang, Xuemei
PUB. DATE
March 2012
SOURCE
Digestive Diseases & Sciences;Mar2012, Vol. 57 Issue 3, p791
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Objectives: Pancreatic neuroendocrine tumors (PNET) are fairly uncommon. Recent data highlight the importance of EUS in diagnosis of PNET. With this background, we decided to review our experience from a tertiary cancer center with regard to the presentation and clinical features of PNET and the diagnostic utility of EUS-FNA in this scenario. Methods: We identified patients who underwent EUS at our institution between January 1st 2001 and December 31st 2009 for a suspected PNET. Data on clinical features, cross-sectional imaging findings, EUS findings, and cytology results were collected. Results: A total of 81 patients were referred for EUS-FNA for a suspected PNET. Mean age was 58.1 years. There were 41 (50.6%) males. PNET was found incidentally in 38 (46.9%) patients. Computed tomography scanning identified a pancreatic mass in 72 out of 79 (91.1%) cases. Mean diameter of the largest lesion seen on EUS was 27.5 mm (range: 6.9-80 mm). The most common site (34; 42%) was the head of the pancreas. EUS-FNA correctly confirmed a PNET in 73 out of 81 cases with diagnostic accuracy of 90.1%. Seven (8.6%) out of 81 patients had functional lesions, including three gastrinomas and four insulinomas. Liver metastases were found in 31 out of 81 (38.3%) cases. Of the 31 patients with liver metastasis, the mean diameter of lesions on EUS was 33.9 mm compared with 23.5 mm in patients without liver metastasis ( P = 0.005). Conclusion: EUS-FNA is a reliable modality for further characterization of suspected lesions and for establishing a tissue diagnosis. The occurrence of complications of EUS-FNA in this setting is low. Non-functional PNET are more frequently encountered than functional PNET.
ACCESSION #
71834167

 

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