It may appear on a CT scan or MRI scan as enhancement and dilation of the duct (sialectasis). On sialography, it may appear as segments of duct dilation and stenosis. This is sometimes termed the 'sausage link appearance'.
Sialodochitis
Monorchism
Cholecystitis
Cholangitis 
Intestinal capillariasis
Gastroenterocolitis
Miliary fever
Gastroenteritis