Multi-slice spiral computed tomography features of gastric ectopic pancreas / 中国医师杂志

ABSTRACT

Objective:To analyze the multi-slice spiral computed tomography (MSCT) features of gastric ectopic pancreas (GEP).Methods:The MSCT images of 21 patients with GEP admitted to Sir Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University from July 2016 to March 2019 were reviewed. The size, location, growth pattern, cystic, peritumoral fat-line of the lesions were included. The CT value was measured including the phase of pre-enhancement, artery phase, vein phase and the ratio between total enhancements and pre-enhancement CT values. Finally, the relationships among them were performed.Results:The long diameter was (20.80±11.44)mm, short diameter (15.14±5.96)mm, ratio between long and short diameter 1.34±0.25; GEP was usually in an ovoid shape [12(57.1%)], located in gastric body [12(57.1%)], in a exoluminal growth pattern [12(57.1%)]. Peritumoral fat-line was seen in 6 patients (28.6%), and a cyst was seen in one patient (4.8%). GEP was presented with persistently enhancing (progressive) pattern. Pre-enhancement CT values was (40.99±8.51)HU, artery phase (78.11±18.27)HU, vein phase (93.87±15.14)HU and the ratio between total enhancements and pre-enhancement CT values 1.41±0.75. Pre-enhancement CT values had a negative relationship with the ratio between total enhancements and pre-enhancement CT values with a correlation coefficient of -0.74.Conclusions:MSCT could well display the size, location, growth pattern, cystic, peritumoral fat-line and enhancement characteristics of GEP, which is helpful with clinical practice.