Background: There are only 6 cases of intraductal papillary mucinous neoplasm (IPMN) complicated with\nintraductal hemorrhage have been reported in English literatures. All these 6 cases of IPMN occurred in the old\npeople. The present rare case of IPMN complicated with intraductal hemorrhage occurred in a young woman, and\nmimicked a cystic solid pseudo-papillary neoplasm (SPN) on preoperative imaging findings.\nCase presentation: A 29-year-old young woman complained of a sustained mild right upper quadrant abdominal\npain. CT and MRI showed a lobulated, partly ill-defined cystic lesion located in the pancreatic head. Spotted\ncalcification within cystic wall was seen on CT. The lesion was demonstrated as predominantly homogeneous\nhyperattenuation on CT and homogeneous high signal without decreased signal on fat suppression sequence on\nT1WI. After contrast administration, the cystic wall and septa of lesion was showed gradually mild to moderate degree\nof enhancement over time both on CT and MRI. No communication between lesion and the main duct was found on\nMRCP and the main pancreatic duct and common bile duct were not dilated. Considering patientâ??s age, gender and\nmanifestations of lesion on CT and MRI (calcification, bleeding and gradually enhanced pattern), the present case\nmimicked as a cystic SPN. The lesion was pathologically confirmed a branch type IPMN after surgical resection.\nConclusion: We propose that IPMN may need to be taken into account in the differential diagnosis when pancreatic\ncystic lesions occur in young women with bleeding, calcification, progressive enhancement of cystic wall and no\ncommunication with the main pancreatic duct.
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