What is the histological grade of the breast cancer?
Histology is the study of tissues, including cellular structure and function. Pathologists assign a histological grade to a patients breast tumor in order to identify the type of tumor present. A pathologist determines a cancers histological grade by examining the breast cancer cells and their patterns under a microscope. Three features of cells inside a tumor determine the grade of the cancer: *Frequency (rate) of cell mitosis (i.e.: cell division) *Percentage of cancer cells containing tubules (tubular structures) *Change in size and shape of nuclei within cells Each of these features is assigned a score ranging from 1 to 3. Cell growth that follows a slower, more orderly pattern is considered Grade 1. If cells are multiplying in a faster, more disorganized way, the cell growth grade is labeled Grade 3. Generally speaking, the lower the histological grade of the breast cancer, the more favorable the outcome. However, tumors that are higher grade tend to be more responsive to aggressi
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