Presentation
Abdominal pain with an abnormal ultrasound exam.
Patient Data
The MRI sequences demonstrate a multilobulated cystic mass of the tail of the pancreas with a 'bunch of grape' appearance, not communicating with the pancreatic duct which appears normal in diameter. It is of low signal intensity on T1WI, high signal intensity on T2WI with no enhancement seen on postcontrast sequences. No restricted diffusion is seen on DWI/ADC.
Case Discussion
The MRI features of a probable serous cystadenoma of pancreas.
On imaging, the appearance is similar to intraductal papillary mucinous neoplasm (IPMN) but the absence of communication with the main pancreatic duct is the key to the correct diagnosis.