Table 1 Histologic features of phyllodes tumors according to the presence of fibroadenoma-like areas
Histologic parameter | PT with FA-like areas (n=7) | PT without FA-like areas (n=9) | p value | |
|---|---|---|---|---|
Tumor border | Well defined | 4 (57%) | 3 (33%) | 0.592 |
Permeative | 3 (43%) | 6 (67%) | ||
Stromal cellularity | Mild | 1 (14%) | 0 (0%) | 0.212 |
Moderate | 4 (57%) | 3 (33%) | ||
Marked | 2 (29%) | 6 (67%) | ||
Stromal atypia | Mild | 1 (14%) | 1 (11%) | 0.633 |
Moderate | 5 (71%) | 4 (44%) | ||
Marked | 1 (14%) | 4 (44%) | ||
Mitoses/10 HPF | 0–10 | 6 (86%) | 2 (22%) | 0.04 |
>10 | 1 (14%) | 7 (78%) | ||
Stromal overgrowth | Absent | 6 (86%) | 5 (56%) | 0.308 |
Present | 1 (14%) | 4 (44%) | ||
Malignant heterologous elements | Absent | 7 (100%) | 7 (78%) | 0.475 |
Present | 0 (0%) | 2 (22%) | ||
