Benign
(n=27)
Borderline
(n=25)
Malignant
(n=33)
pValue
Stromal Atypia
•  Mild 26 (96.3%) 09 (36%) 0   p<0.0001
•  Moderate 01 (3.7%) 14 (56%) 03 (9.1%)
•  Marked 0 02 (8%) 30 (90.9%)
Stromal Cellularity
• Mild 20 (74.1%) 03 (12%) 0 p<0.0001
• Moderate 07 (25.9 %) 19 (76%) 04 (12.1%)
• Marked 0 03 (12%) 29 (87.9%)
Tumor Margins
• Pushing 27 (100%) 21 (84%) 03 (9.1%) p<0.0001
• Infiltrative 00 04 (16%) 30 (90.9%)
Mitoses (per 10 HPF)
Range 1-4 2-18 5-42 p<0.0001
Average 2.6 ± 1 7.6 ± 3 20.5 ± 9.5
Mitotic Count
• 0-4 / 10HPF 27 (100%) 01 (4%) 00 p<0.0001
• 5-9 / 10HPF 00 18 (72%) 03 (9.1%)
• >10 /10HPF 00 06 (24%) 30 (90.9%)
Sarcomatous Component 00 00 02 (6.1%) p =0.199
Necrosis 00 01 (4%) 05 (15.2%) p =0.058
Additional epithelial lesions
• Papilloma 01 00 00  
• Usual Duct Hyperplasia 01 03 02
• Atypical Ductal Hyperplasia 00 01 00
• Duuctal carcinoma in situ 00 01 01
Table 3: Comparison of histolological features in categories of Phylloides Tumor.