Pancreatic pseudoaneurysm mimicking pancreatic tumor: A casereport and review of literature  

作　　者：Yuan Yang Xue-Mei Liu Hong-Ping Li Rui Xie Bi-Guang Tuo Hui-Chao Wu 

机构地区：[1]Department of Gastroenterology,Digestive Disease Hospital,Affiliated Hospital of Zunyi Medical University,Zunyi 563000,Guizhou Province,China

出　　处：《World Journal of Gastrointestinal Oncology》2023年第11期2041-2048,共8页世界胃肠肿瘤学杂志（英文版）（电子版）

基　　金：Supported by Guizhou Provincial Basic Research Program(Natural Science),No.QIAN KE HE JI CHU-ZK(2023)YI BAN 558;Collaborative Innovation Center of Chinese Ministry of Education,No.2020-39.

摘　　要：BACKGROUND Pancreatic pseudoaneurysm is a rare vascular complication of chronic pancreatitis(CP)or necrotizing pancreatitis with an incidence of 4%to 17%,but it is potentially life-threatening.It is well known that most pancreatic pseudoaneurysms are clinically associated with pancreatic pseudocysts and are usually in the peripancreatic body-tail.A minority of intrapancreatic pseudoaneurysms occur in the absence of pseudocyst formation.Noninvasive computed tomography(CT)and magnetic resonance imaging(MRI)are most commonly used examinations for screening pancreatic pseudoaneurysms.Notably,the rare intrapancreatic pseudoaneurysm in the pancreatic head can mimic a hypervascular solid mass and be misdiagnosed as a pancreatic tumor.CASE SUMMARY We report the case of a 67-year-old man who had been admitted to our hospital due to recurrent abdominal pain for 1 mo that was aggravated for 5 d.CT and MRI revealed a mass in the pancreatic head with significant expansion of the main pancreatic duct and mild atrophy of the pancreatic body-tail.He was admitted to the department of hepatobiliary and pancreatic surgery due to the possibility of a pancreatic tumor.The patient was then referred for endoscopic ultrasonography(EUS)with possible EUS-FNA.However,EUS showed a cystic lesion in the pancreatic head with wall thickness and enhancing nodules,which was doubtful because it was inconsistent with the imaging findings.Subsequently,color doppler flow imaging demonstrated turbulent arterial blood flow in the cystic lesion and connection with the surrounding vessel.Therefore,we highly suspected the possibility of CP complicated with intrapancreatic pseudoaneurysm,combined with the patient's long-term drinking history and the sonographic features of CP.Indeed,angiography revealed an oval area of contrast medium extravasation(size:1.0 cm×1.5 cm)at the far-end branch of the superior pancreaticoduodenal artery,and angiographic embolization was given immediately at the same time.CONCLUSION EUS is an important differential diagnostic to

关 键 词：Pancreatic pseudoaneurysm Chronic pancreatitis Pancreaticoduodenal artery Endoscopic ultrasonography Case report 

分 类 号：R735.9[医药卫生—肿瘤]