Investigative Magnetic Resonance Imaging

Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회)
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Lymphoepithelial Cyst in Pancreas: a Case Report with Magnetic Resonance Imaging Findings

  • Kim, Hee Jeong (Department of Radiology, Dankook University Hospital) ;
  • Park, Mi-hyun (Department of Radiology, Dankook University Hospital)
  • Received : 2017.12.24
  • Accepted : 2018.02.01
  • Published : 2018.03.31
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Abstract

Pancreatic lymphoepithelial cysts (LECs) are rare pancreatic cysts with squamous epithelial lining surrounded by dense lymphoid tissue. A preoperative diagnosis of LECs is difficult due to imaging diversity and inadequate documentation because of their rarity. We present a case of surgically confirmed pancreatic LEC with magnetic resonance imaging (MRI) findings as heterogeneous signal intensity on T2-weighted images with multiple septa-like structures, slightly hypo-signal intensity on T1-weighted images, and thin-wall enhancement on dynamic contrast images. LECs are benign lesions without any malignant potential. Therefore, the inclusion of LEC in the differential diagnosis of cystic pancreatic lesions may reduce unnecessary surgical procedures.

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References

  1. Brugge WR, Lauwers GY, Sahani D, Fernandez-del Castillo C, Warshaw AL. Cystic neoplasms of the pancreas. N Engl J Med 2004;351:1218-1226 https://doi.org/10.1056/NEJMra031623
  2. Kavuturu S, Sarwani NE, Ruggeiro FM, et al. Lymphoepithelial cysts of the pancreas. Can preoperative imaging distinguish this benign lesion from malignant or pre-malignant cystic pancreatic lesions? JOP 2013;14:250-255
  3. Ramsden KL, Newman J. Lymphoepithelial cyst of the pancreas. Histopathology 1991;18:267-268 https://doi.org/10.1111/j.1365-2559.1991.tb00837.x
  4. Adsay NV, Hasteh F, Cheng JD, et al. Lymphoepithelial cysts of the pancreas: a report of 12 cases and a review of the literature. Mod Pathol 2002;15:492-501 https://doi.org/10.1038/modpathol.3880553
  5. Nam SJ, Hwang HK, Kim H, et al. Lymphoepithelial cysts in the pancreas: MRI of two cases with emphasis of diffusionweighted imaging characteristics. J Magn Reson Imaging 2010;32:692-696
  6. Kim YH, Auh YH, Kim KW, Lee MG, Kim KS, Park SY. Lymphoepithelial cysts of the pancreas: CT and sonographic findings. Abdom Imaging 1998;23:185-187 https://doi.org/10.1007/s002619900318
  7. Chen S, Ikawa F, Kurisu K, Arita K, Takaba J, Kanou Y. Quantitative MR evaluation of intracranial epidermoid tumors by fast fluid-attenuated inversion recovery imaging and echo-planar diffusion-weighted imaging. AJNR Am J Neuroradiol 2001;22:1089-1096
  8. Fukukura Y, Inoue H, Miyazono N, et al. Lymphoepithelial cysts of the pancreas: demonstration of lipid component using CT and MRI. J Comput Assist Tomogr 1998;22:311-313 https://doi.org/10.1097/00004728-199803000-00029
  9. Ahlawat SK. Lymphoepithelial cyst of pancreas. Role of endoscopic ultrasound guided fine needle aspiration. JOP 2008;9:230-234
  10. Centeno BA, Stockwell JW, Lewandrowski KB. Cyst fluid cytology and chemical features in a case of lymphoepithelial cyst of the pancreas: a rare and difficult preoperative diagnosis. Diagn Cytopathol 1999;21:328-330