Tumor size is highly related to prognosis.
In most cases, the smaller the tumor, the better the chances for long-term survival.
A health care provider can estimate the size of the tumor by feeling it during a physical exam.
Images from a breast ultrasound or mammogram can also be used to estimate tumor size.
However, the best way to measure the entire tumor is after it’s been removed from the breast. The pathologist will take these measurements and record them in your pathology report.
Learn more about a pathology report.
For a summary of research studies on tumor size and breast cancer survival, visit the Breast Cancer Research Studies section.
Breast Cancer 101: Tumors
Breast Cancer 101: Tumor Size and Spread