Clinical and radiological feature of lymphoepithelial cyst of the pancreas

Table 1 Patient demographics, clinical findings

	Year	Age	Gender	Size (mm)	Symptom	Location	CA19-9 (U/mL)
Case 1	2004	59	Male	90	Nonspecific	Body	4
Case 2	2009	49	Female	60	Nonspecific	Tail	298
Case 3	2012	56	Male	40	Nonspecific	Body	75
Case 4	2012	56	Male	60	Nonspecific	Head	96

Table 2 Feature of lymphoepithelial cyst of the pancreas

Characteristics
Age, gender	Middle-aged and elderly men
Laboratory date	Elevation of serum CA19-9 level
The form	Well-defined
	Exophytic off the pancreatic parenchyma
	Multilocular (60%) or Unilocular (40%)
US findings	Mosaic pattern, depending on the degree of keratin formation
CT findings	Enhancement of the wall and septum of the cyst
	Low density cystic lesion without enhancement
	No pancreatic duct dilatation
MRI findings
T1-weighted	Higher intensity than water
T2-weighted	Lower intensity than water
MRCP	Lower intensity than water
	No communication with the main pancreatic duct
Diffusion-weighted	Higher intensity than water

US: Ultrasonography; MRI: Magnetic resonance imaging; CT: Computed tomography; MRCP: Magnetic resonance cholangiopancreatography.