Abstract

The purpose of the study was to investigate the incidence of pancreatic contour variations on multidetector CT (MDCT) for abdominal examinations. A retrospective analysis of 700 MDCT scans was performed in patients who underwent triple phase CT abdomen between October 2018 and January 2021. After excluding 176 patients, finally total of 524 patients were included in the study. For simplification, we classified the pancreatic contour variations as classified by Ross et al. and Omeri et al. Pancreatic head-neck variations was classified into Type I-anterior, Type II-posterior and Type III-horizontal variety. Pancreatic body-tail variation was divided into Type Ia-anterior projection; Ib-posterior projection and Type IIa-globular, IIb-lobulated, IIc-tapered, and IId-bifid pancreatic tail. The most common type of variation in the head was Type II (n = 112, 21.3%) followed by Type III (n = 37, 7%) and Type I (n = 21, 4%). The most common type of variation in the body of pancreas was Type Ia (n = 33, 6.2%) followed by Type Ib (n = 13, 2.4%). In the tail region of pancreas, the most common variation was Type IIb (n = 21, 4%) followed by Type IIa (n = 19, 3.6%). Pancreatic contour variations are not very uncommon in daily practice. Knowledge of these variations is important for surgeons, radiologists and avoids misjudgement of normal pancreatic tissue as tumor or lymph node especially on unenhanced or single phase MDCT.

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