PMC4345241_01
The macroscopic view of the mass.
CRIS2015-714640.001.jpg
PMC4345241_01_CRIS2015-714640.001.jpg
fig1
A CT scan of the abdomen showed a mass in the third part of the duodenum (Figure 1).
(a) Duodenal mucosa and squamous cells are seen together, stained with H&E, 40-fold magnification. (b) Invasive foci stained with cytokeratin staining, 40-fold magnification.
CRIS2015-714640.002.jpg
PMC4345241_01_CRIS2015-714640.002.jpg
fig2
TTF-1 (Figure 2). The Ki-67 index was 31%.