Table 1 A comparison of biopsies and excisions regarding the frequency of selected pathologic features of DCIS**
Morphologic features | Core biopsy (n = 40) | Excision (n = 40) |
|---|---|---|
Maximum nuclear grade 3 | 18 | 19 |
Maximum nuclear grade 2 | 22 | 21 |
Necrosis in DCIS | 33 | 29 |
Calcification in DCIS | 32 | 29 |
Comedo-pattern necrosis present (Solid pattern with central necrosis and grade 3/3 nuclear atypia) | 16 | 14 |
Non-comedo pattern necrosis present (associated with grade 2/3 atypia and/or non-solid patterns) | 17 | 16 |
Solid pattern only (irrespective of atypia or necrosis) | 17 | 8 |
Solid and micropapillary only | 0 | 1 |
Solid, micropapillary, and cribriform only | 7 | 5 |
Micropapillary only | 1 | 0 |
Micropapillary and clinging | 1 | 0 |
Cribriform only | 0 | 1 |
Micropapillary and cribriform only | 2 | 1 |
Solid, micropapillary, clinging and cribriform only | 0 | 3 |
Clinging only | 0 | 0 |