Lymphoepithelial cyst of the pancreas: Comparison of CT findings with other pancreatic cystic lesions

Won Hwa Kim, Jae Young Lee, Hee Sun Park, Hyung Jin Won, Young Hun Kim, Jin Young Choi, Se Hyung Kim, Joon Koo Han, Byung Ihn Choi

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Objective: To describe the CT findings of lymphoepithelial cysts (LECs) of the pancreas and to investigate the differential findings between LECs and other pancreatic cystic lesions. Materials and methods: Fifty-eight patients with 8 LECs (M:F = 7:1; mean age 55.1 years), 30 serous cystadenomas (SCA) (M:F = 11:19; 52.5 years), 11 mucinous cystadenomas (MCA) (M:F = 0:11; 47.2 years), and 9 pseudocysts (M:F = 6:3; 50.8 years) were included in this study. Two radiologists analyzed all CT images for 3D location, outer shape, appearance, the presence of calcification, enhancing nodule, and pancreatic duct dilatation. Size of lesions and CT number of cystic portion on precontrast CT were measured. For statistical analysis, Mann-Whitney U test and Fisher's exact test were used. Results: 75 % (6/8) of LECs showed an extrapancreatic location than all other cystic diseases in terms of 3D location (p < 0.0001). LECs showed variable outer shape without a significant difference from that of SCAs and pseudocysts (p > 0.05), but LECs showed microlobulated surface more frequently than the MCAs (p < 0.05). LECs showed a variable appearance from unilocular to multi-microcystic. CT attenuation of LECs (21.2 ± 7.1 HU) was higher than that of SCAs and MCAs (p = 0.005). Size of LECs (34.0 ± 10.8 mm) was smaller than that of MCAs (p = 0.040). There was no calcification, pancreatic duct dilatation, or enhancing nodules in LECs. Conclusion: LECs appear as a highly exophytic medium-sized cystic mass with various morphology occurring predominantly in the middle-aged or older male patients.

Original languageEnglish
Pages (from-to)324-330
Number of pages7
JournalAbdominal Imaging
Volume38
Issue number2
DOIs
StatePublished - 1 Apr 2013

Fingerprint

Cysts
Pancreas
Pancreatic Ducts
Dilatation
Serous Cystadenoma
Mucinous Cystadenoma
Pancreatic Cyst
Nonparametric Statistics

Keywords

  • CT
  • Lymphoepithelial cyst
  • Mucinous cystadenoma
  • Pancreas
  • Pancreatic cyst
  • Pseudocyst
  • Serous cystadneoma

Cite this

Kim, Won Hwa ; Lee, Jae Young ; Park, Hee Sun ; Won, Hyung Jin ; Kim, Young Hun ; Choi, Jin Young ; Kim, Se Hyung ; Han, Joon Koo ; Choi, Byung Ihn. / Lymphoepithelial cyst of the pancreas : Comparison of CT findings with other pancreatic cystic lesions. In: Abdominal Imaging. 2013 ; Vol. 38, No. 2. pp. 324-330.
@article{62e60ba64d0c41679dc3c30c9b07bc95,
title = "Lymphoepithelial cyst of the pancreas: Comparison of CT findings with other pancreatic cystic lesions",
abstract = "Objective: To describe the CT findings of lymphoepithelial cysts (LECs) of the pancreas and to investigate the differential findings between LECs and other pancreatic cystic lesions. Materials and methods: Fifty-eight patients with 8 LECs (M:F = 7:1; mean age 55.1 years), 30 serous cystadenomas (SCA) (M:F = 11:19; 52.5 years), 11 mucinous cystadenomas (MCA) (M:F = 0:11; 47.2 years), and 9 pseudocysts (M:F = 6:3; 50.8 years) were included in this study. Two radiologists analyzed all CT images for 3D location, outer shape, appearance, the presence of calcification, enhancing nodule, and pancreatic duct dilatation. Size of lesions and CT number of cystic portion on precontrast CT were measured. For statistical analysis, Mann-Whitney U test and Fisher's exact test were used. Results: 75 {\%} (6/8) of LECs showed an extrapancreatic location than all other cystic diseases in terms of 3D location (p < 0.0001). LECs showed variable outer shape without a significant difference from that of SCAs and pseudocysts (p > 0.05), but LECs showed microlobulated surface more frequently than the MCAs (p < 0.05). LECs showed a variable appearance from unilocular to multi-microcystic. CT attenuation of LECs (21.2 ± 7.1 HU) was higher than that of SCAs and MCAs (p = 0.005). Size of LECs (34.0 ± 10.8 mm) was smaller than that of MCAs (p = 0.040). There was no calcification, pancreatic duct dilatation, or enhancing nodules in LECs. Conclusion: LECs appear as a highly exophytic medium-sized cystic mass with various morphology occurring predominantly in the middle-aged or older male patients.",
keywords = "CT, Lymphoepithelial cyst, Mucinous cystadenoma, Pancreas, Pancreatic cyst, Pseudocyst, Serous cystadneoma",
author = "Kim, {Won Hwa} and Lee, {Jae Young} and Park, {Hee Sun} and Won, {Hyung Jin} and Kim, {Young Hun} and Choi, {Jin Young} and Kim, {Se Hyung} and Han, {Joon Koo} and Choi, {Byung Ihn}",
year = "2013",
month = "4",
day = "1",
doi = "10.1007/s00261-012-9910-6",
language = "English",
volume = "38",
pages = "324--330",
journal = "Abdominal imaging",
issn = "0942-8925",
number = "2",

}

Lymphoepithelial cyst of the pancreas : Comparison of CT findings with other pancreatic cystic lesions. / Kim, Won Hwa; Lee, Jae Young; Park, Hee Sun; Won, Hyung Jin; Kim, Young Hun; Choi, Jin Young; Kim, Se Hyung; Han, Joon Koo; Choi, Byung Ihn.

In: Abdominal Imaging, Vol. 38, No. 2, 01.04.2013, p. 324-330.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Lymphoepithelial cyst of the pancreas

T2 - Comparison of CT findings with other pancreatic cystic lesions

AU - Kim, Won Hwa

AU - Lee, Jae Young

AU - Park, Hee Sun

AU - Won, Hyung Jin

AU - Kim, Young Hun

AU - Choi, Jin Young

AU - Kim, Se Hyung

AU - Han, Joon Koo

AU - Choi, Byung Ihn

PY - 2013/4/1

Y1 - 2013/4/1

N2 - Objective: To describe the CT findings of lymphoepithelial cysts (LECs) of the pancreas and to investigate the differential findings between LECs and other pancreatic cystic lesions. Materials and methods: Fifty-eight patients with 8 LECs (M:F = 7:1; mean age 55.1 years), 30 serous cystadenomas (SCA) (M:F = 11:19; 52.5 years), 11 mucinous cystadenomas (MCA) (M:F = 0:11; 47.2 years), and 9 pseudocysts (M:F = 6:3; 50.8 years) were included in this study. Two radiologists analyzed all CT images for 3D location, outer shape, appearance, the presence of calcification, enhancing nodule, and pancreatic duct dilatation. Size of lesions and CT number of cystic portion on precontrast CT were measured. For statistical analysis, Mann-Whitney U test and Fisher's exact test were used. Results: 75 % (6/8) of LECs showed an extrapancreatic location than all other cystic diseases in terms of 3D location (p < 0.0001). LECs showed variable outer shape without a significant difference from that of SCAs and pseudocysts (p > 0.05), but LECs showed microlobulated surface more frequently than the MCAs (p < 0.05). LECs showed a variable appearance from unilocular to multi-microcystic. CT attenuation of LECs (21.2 ± 7.1 HU) was higher than that of SCAs and MCAs (p = 0.005). Size of LECs (34.0 ± 10.8 mm) was smaller than that of MCAs (p = 0.040). There was no calcification, pancreatic duct dilatation, or enhancing nodules in LECs. Conclusion: LECs appear as a highly exophytic medium-sized cystic mass with various morphology occurring predominantly in the middle-aged or older male patients.

AB - Objective: To describe the CT findings of lymphoepithelial cysts (LECs) of the pancreas and to investigate the differential findings between LECs and other pancreatic cystic lesions. Materials and methods: Fifty-eight patients with 8 LECs (M:F = 7:1; mean age 55.1 years), 30 serous cystadenomas (SCA) (M:F = 11:19; 52.5 years), 11 mucinous cystadenomas (MCA) (M:F = 0:11; 47.2 years), and 9 pseudocysts (M:F = 6:3; 50.8 years) were included in this study. Two radiologists analyzed all CT images for 3D location, outer shape, appearance, the presence of calcification, enhancing nodule, and pancreatic duct dilatation. Size of lesions and CT number of cystic portion on precontrast CT were measured. For statistical analysis, Mann-Whitney U test and Fisher's exact test were used. Results: 75 % (6/8) of LECs showed an extrapancreatic location than all other cystic diseases in terms of 3D location (p < 0.0001). LECs showed variable outer shape without a significant difference from that of SCAs and pseudocysts (p > 0.05), but LECs showed microlobulated surface more frequently than the MCAs (p < 0.05). LECs showed a variable appearance from unilocular to multi-microcystic. CT attenuation of LECs (21.2 ± 7.1 HU) was higher than that of SCAs and MCAs (p = 0.005). Size of LECs (34.0 ± 10.8 mm) was smaller than that of MCAs (p = 0.040). There was no calcification, pancreatic duct dilatation, or enhancing nodules in LECs. Conclusion: LECs appear as a highly exophytic medium-sized cystic mass with various morphology occurring predominantly in the middle-aged or older male patients.

KW - CT

KW - Lymphoepithelial cyst

KW - Mucinous cystadenoma

KW - Pancreas

KW - Pancreatic cyst

KW - Pseudocyst

KW - Serous cystadneoma

UR - http://www.scopus.com/inward/record.url?scp=84879498177&partnerID=8YFLogxK

U2 - 10.1007/s00261-012-9910-6

DO - 10.1007/s00261-012-9910-6

M3 - Article

C2 - 22610041

AN - SCOPUS:84879498177

VL - 38

SP - 324

EP - 330

JO - Abdominal imaging

JF - Abdominal imaging

SN - 0942-8925

IS - 2

ER -