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01.08.2011 | Original Article | Ausgabe 4/2011 Open Access

Insights into Imaging 4/2011

The prevalence of circumportal pancreas as shown by multidetector-row computed tomography

Zeitschrift:
Insights into Imaging > Ausgabe 4/2011
Autoren:
Kousei Ishigami, Tsuyoshi Tajima, Akihiro Nishie, Yoshiki Asayama, Daisuke Kakihara, Tomohiro Nakayama, Ken Shirabe, Akinobu Taketomi, Masafumi Nakamura, Shunichi Takahata, Tetsuhide Ito, Hiroshi Honda

Abstract

Objective

To evaluate the prevalence of circumportal pancreas (CP) and any coexisting anomaly. In addition, three cases of surgically confirmed CP are presented.

Methods

The study group consisted of 317 consecutive potential liver transplant donor candidates who had undergone thin-section MDCT studies for the evaluation of vascular anatomy. MDCT images were retrospectively reviewed to assess the presence or absence of CP. If CP was present, the transverse diameter of the aberrant pancreatic tissue was measured on axial images, and the course of the main pancreatic duct (MPD) was classified into ante-portal (normal) or retro-portal. In addition, the prevalence of variant hepatic arterial anatomy was compared between cases with and without CP.

Results

Eight of 317 liver transplant donor candidates (2.5%) were found to have CP at CT. The transverse diameter of the aberrant pancreatic tissue ranged from 5 to 18 mm (mean ± SD: 10 ± 4 mm). One of eight (12.5%) showed the MPD to be retro-portal. A variant hepatic artery was noted in two of the of eight (25%) patients, which was similar to the finding for those without CP [72 out of 309 (23%)].

Conclusion

The prevalence of circumportal pancreas was 2.5%.
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