Revision 21 for 'Mucinous cystadenoma of the pancreas'

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Mucinous cystadenoma of pancreas

Mucinous cystadenomas (MCN) of pancreas are a type of mucinous cystic neoplasm of the pancreas.

Epidemiology

Previously believed to occur exclusively in middle age females 5, it has occasionally been described in males 6-7.

Pathology

It is a large uni/multilocular cystic pancreatic neoplasm lined by columnar mucinous epithelium. While mucinous cyst adenomas very infrequently communicate with the pancreatic duct 13, they can cause partial pancreatic ductal obstruction 11.  They are considered pre malignant or malignant lesions with usually elevated CEA and CA 19-9 serum levels.

Location

Largely (~ 80%) the body or tail of the pancreas, i.e. head of the pancreas possible (~ 20%) 11.

Radiographic features

CT
  • the tumour contour tends to be rounded or ovoid although this is not an absolutely specific feature 2
  • associated calcification when present tends to be more peripheral 1,11
  • contents of the lesion may be heterogenous is attenuation 2
  • internal septations may be present and tend to be linear or curvilinear 2

Differential diagnosis

On ultrasound or CT consider:

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