PMC6279997_01
MRI axial T1 without contrast. The arrow points to the isointense 4 cm marginated mass in the pancreas head.
gr1.jpg
PMC6279997_01_gr1.jpg
fig0005
An abdominal magnetic resonance was ordered and showed an isointense smoothly marginated 4 cm mass in T1 (Fig. 1) and a signal intensity similar to the normal in T2 (Fig. 2).
Intraoperative aspect. White arrow: Castleman tumor. Blue arrow: Pancreatic head. Green Arrow: Duodenum.
gr3.jpg
PMC6279997_01_gr3.jpg
fig0015
Homogenous enhancement, similar to the pancreas in T1 with contrast (Fig. 3). On exploration, we found an encapsulated mass bulging in the retroperitoneum at the pancreatic head (Fig. 3).
Macroscopic appearance. The tumor had smooth borders and was capsulated.
gr4.jpg
PMC6279997_01_gr4.jpg
fig0020
The mass was completely excised, while preserving its capsule (Fig. 4), a feature that would not be typical in an pancreatic malignancy.
Immunohistochemistry. On the left: Prominent vascular proliferation and hyalinization of the vessel walls. On the right: Negative BCL2.
gr5.jpg
PMC6279997_01_gr5.jpg
fig0025
BCL1 and BCL2 were negative (Fig. 5).