What is serous cystadenoma ?

A benign, cystic, multilocular tumour of the pancreas.

How is it diagnosed?

It may be discovered by chance or in case of non-specific abdominal pains, on an MRI or scan of the pancreas. This lesion most often affects women ages 60-70.

Pancreatic imaging is used in most cases to make a diagnosis (CT scan; MRI): single tumour, with no communication with the pancreatic ducts. It is composed of multiple cysts with a honeycomb appearance +/- central calcification. In 10% of cases, there is a macrocyst form.

An endoscopic ultrasound completes the exam, in case of doubt after CT scan and MRI. It is possible to puncture the cyst for analysis: tumour markers (CEA and CA 19.9) are low, such as lipase.

How is it treated ?

It is a benign lesion that requires no treatment or follow-up in the absence of symptoms. Complications involving compression of the hepatic ducts are rare.