Prevalence of Pancreatic Cystic lesions Detected by Magnetic Resonance Imaging in the Chinese population

Liqi Sun, Yang Wang, Fei Jiang, Wei Qian, Chengwei Shao, Zhendong Jin
Journal of Gastroenterology and Hepatology 2019 March 18

OBJECTIVE AND AIMS: Incidental pancreatic cystic lesions (PCLs) are being diagnosed more frequently. However, little is known about the prevalence of PCLs in the Chinese population. The aim of the study was to assess the crude prevalence of PCLs in individuals who underwent magnetic resonance imaging (MRI).

METHODS: Data from consecutive patients who underwent MRI without pancreatic indications were included. MRI images were reviewed for the presence of pancreatic cysts. The prevalence of PCLs and high-risk PCLs in different gender and age groups was calculated. To assess the crude prevalence, the prevalence and demographic data were standardized on the basis of Chinese national population data in 2017.

RESULTS: 10987 individuals were included (7344 men). Incidental PCLs were identified in 212 individuals (128 men). The prevalence of PCLs was 1.93%, and PCLs were more often discovered in females (1.74% vs 2.31%, P=0.043). Prevalence increased with age (r=0.804, P<0.001). The prevalence of high-risk PCLs was 0.12% (n=13). Gender predominance and age distribution showed no difference between high-risk PCLs and low-risk PCLs (P=0.234 and P=0.855), but cysts located in the pancreatic head were more likely to develop into high-risk PCLs (P=0.001). After data standardization, the crude prevalence of PCLs was 1.31%, and PCLs were more often discovered in females (1.11% vs 1.5%, P<0.001). The crude prevalence of high-risk PCLs was 0.07%.

CONCLUSION: PCLs in the Chinese population are not rare. The prevalence of PCLs increased with age and is higher in the female population. The prevalence of high-risk PCLs should not be ignored.

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