Share：
Share this content in WeChat
X
[Chinese][PDF]880260
• Clinical Article •
The bypass sign of main pancreatic duct: a significant MRI sign of pancreatic neuroendocrine tumors
XIAO Bo 

DOI:10.3969/j.issn.1674-8034.2015.03.007.


[Abstract] Objective: To investigate the clinic value of the bypass sign of main pancreatic duct for pancreatic neuroendocrine tumors.Materials and Methods: Twenty-six patients with pancreatic neuroendocrine tumor and 58 patients with pancreatic cancer confirmed by pathology between January, 2000 to January, 2014 in our hospital were retrospectively studied. All MRI images were reviewed for the characteristics and the signal intensity of tumors, and the relationship between tumor and main pancreatic duct.Results: For 26 patients with pancreatic neuroendocrine tumor, the maximum diameter of these tumors and main pancreatic duct was (4.2±2.6) cm (0.8—9.0 cm) and (2.1±1.1) mm (1-4 mm), respectively. On MRI, the bypass sign of main pancreatic duct was seen in 76.9% (20/26). The rate of main pancreatic duct dilation was 19.2% (5/26). Based on the bypass sign of main pancreatic duct, the sensitivity, specificity, and accuracy was 76.9% (20/26), 100% (58/58), and 92.8% (78/84) for diagnosis of pancreatic neuroendocrine tumor, respectively.Conclusions: The bypass sign of main pancreatic duct is a significant MRI sign for diagnosis of pancreatic neuroendocrine tumor.
[Keywords] Pancreas neoplasms；Neuroendocrine tumor；Magnetic resonance imaging

XIAO Bo Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Key Laboratory of medical imaging in Sichuan province, Nanchong 637000, China

Conflicts of interest   None.

Received  2014-08-27
Accepted  2014-10-12
DOI: 10.3969/j.issn.1674-8034.2015.03.007
DOI:10.3969/j.issn.1674-8034.2015.03.007.

[1]
Karakaxas D, Gazouli M, Liakakos T, et al. Pancreatic neuroendocrine tumors: current opinions on a rare, but potentially curable neoplasm. Eur J Gastroenterol Hepatol, 2014, 26(8): 826-835.
[2]
Oberg K, Eriksson B. Endocrine tumours of the pancreas. Best Pract Res Clin Gastroenterol, 2005, 19 (5): 753-781.
[3]
Chang F, Chandra A, Culora G, et al. Cytologic diagnosis of pancreatic endocrine tumors by endoscopic ultrasound-guided fine-needle aspiration: a review. Diagn Cytopathol, 2006, 34(9): 649-658.
[4]
罗娅红，于韬，王洋，等．联合应用CT、MRI增强扫描鉴别诊断胰腺癌与慢性胰腺炎．磁共振成像, 2011, 2(1): 42-46.
[5]
靳二虎，张洁，马大庆．胰腺解剖变异和脂肪沉积的MRI表现．磁共振成像, 2012, 3(3): 213-221.
[6]
赵强，张小明，曾南林. 3.0 T MRI对正常胰腺直接供血动脉的显示.磁共振成像, 2013, 4(6): 401-404.
[7]
Semelka RC, Custodio CM, Cem BN, et al. Neuroendocrine tumors of the pancreas: spectrum of appearances on MRI. J Magn Reson Imaging, 2000, 11(2): 141-148.

PREV Comparing cardiac magnetic resonance with echocardiogram on diagnosis of apical hypertrophic cardiomyopathy
NEXT Evaluation of 1H-MRS in detecting active sacroiliitis in patients with axial spondyloarthritis
  


LINK


Tel & Fax: +8610-67113815    E-mail: editor@cjmri.cn