FIG. 11.8.
DCIS, dimorphic.
A:
Papillary structure with two
cell types.
B:
Cuboidal cells with basally oriented nuclei on
the surface and intervening bands of polygonal cells. The
two cell types have similar nuclear cytology.
C:
Invasive
mucinous carcinoma that arose from this dimorphic DCIS.
FIG. 11.9.
DCIS, discordant structure and nuclear grade.
A:
Cribriform DCIS with low nuclear grade and necrosis.
B:
Micropapillary DCIS with high nuclear grade.
C:
Flat
micropapillary (“clinging”) carcinoma with apocrine traits
and high nuclear grade.
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