Estimates the risk of late distant breast cancer recurrence between years 5 and 10 after completion of 5 years of endocrine therapy.
INSTRUCTIONS
Enter patient age, tumor size, tumor grade, and number of positive lymph nodes. The calculator estimates the CTS5 score, predicted 5–10 year distant recurrence risk, and corresponding risk category.
Tumor size*Use invasive tumor size in millimeters. Values above 30 mm are capped at 30 mm in the CTS5 formula.
mm
Tumor grade*
Grade 1+1
Grade 2+2
Grade 3+3
Patient age*
years
Number of nodes involved*Enter the number of positive lymph nodes. The calculator automatically maps this to CTS5 nodal groups: 0, 1, 2–3, 4–9, or >9.
