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grade 2: score = 6
from Breast 2022
by IHC001
Tubules – score 1: >75% score 2: 10-75% score 3: <10%
Pleomorphism – score 1: mild score 2: moderate score 3: severe
Mitosis – score 1-3 depending on mitosis/mm2 ◦ exact number of mitosis depends on field diameter
Final grade: grade 1: score = 3, 4, 5 grade 2: score = 6, 7 grade 3: score = 8, 9
Score 2 for tubule formation Score 3 for pleomorphism Score 3 for mitoses
Total = 8 therefore this is grade 3 carcinoma
