PMC3362227_01
A firm mass, 17 mm in diameter, located in the subareolar area, immediately to the right.
cde-0004-0098-g01.jpg
PMC3362227_01_cde-0004-0098-g01.jpg
F1
The lesion was covered by normal-colored skin and protruded slightly (fig. 1).
a Compressed duct-like structures in a densely fibrotic stroma. b The ducts, lined by one or more layers of cells, have teardrop, comma-like and branching shapes, with lumens that are open and round or filled with small uniform cells.
cde-0004-0098-g02.jpg
PMC3362227_01_cde-0004-0098-g02.jpg
F2
Transition between the two phases was observed (fig. 2a). The duct-like structures were composed of an external layer of relatively pale-stained tumor cells and an internal layer of tumor cells with eosinophilic cytoplasm (fig. 2b).