Figure 1.
Storiform fibrosis: short collagen bands are randomly interlacing in every direction. (×100).
Figure 2.
Diffuse and dense lymphoplasmacytic infiltration and marked fibrosis. (×100).
Figure 3.
Obstructive Phlebitis: the vein has been completely obliterated by the dense inflammation. (×40).
Figure 4.
Partial gland adveolus atrophy and dilation of pancreatic duct. (×100).
Figure 5.
Remarkable neutrophil infiltration. (×100).
Figure 6.
Granulocytic epithelial lesion: lymphoplasmacytic and neutrophilic infiltration with destruction of small duct and ductal epithelium. (×100).
Figure 7.
Massive eosinophil infiltration. (×100).
Figure 8.
Markedly increased CD38-positive plasma cells infiltration. (×100).
Figure 9.
Obviously increased CD138-positive plasma cells infiltration. (×200).
Figure 10.
diffuse and dense infiltration by IgG4-positive plasma cells. (×200).
Figure 11.
Enhanced CT showing nodules surrounding head of pancreas and interrupted common bile duct at the lesion.
Figure 12.
Enhanced CT showing a capsule-like rim.
Figure 13.
Enhanced CT revealing enlargement and cystic low-density shadow of head of pancreas.
Figure 14.
Enhanced CT revealing dilation and string-of-beads change of pancreatic duct,calcification or pancreatic calculus.
Figure 15.
Enhanced CT showing peripancreatic narrow shadows.
Figure 16.
Color Doppler ultrasonography showing string-of-beads dilation of pancreatic duct.
Figure 17.
MRCP (T1WI) showing a capsule-like rim.
Figure 18.
MRCP (T2WI) revealing a capsule-like rim.
Figure 19.
MRCP (T2WI-STIR) revealing a capsule-like rim.
Figure 20.
MRCP showing dilation and interruption of pancreatic duct,beak-shaped stenosis of lower common bile duct.
Figure 21.
MRCP showing dilation of pancreatic duct string-of-beads dilation of body and tail of pancreas.
Figure 22.
PET-CT revealing swelling and pencil sharp of pancreas with enlargement of peripancreatic lymph nodes.