Breast cancer

Histology is the set of characteristics of cancerous tissue, determined under the microscope by anatomopathological examine.This information can be found on the anatomopathological report or on a consultation report.It is essential to indicate histology among the proposed list because some may allow access to clinical trials and targeted medicines.There are several histological subtypes:

• Ductal carcinoma in situ (DCIS)
• Invasive ductal carcinoma
• Lobular carcinoma in situ (CLIS)
• Invasive lobular carcinoma...

(complete list on the Klineo platform)

The TNM score is a classification system used to assess the stage of a cancer, plan treatment, and predict prognosis.

The TNM system is based on three main criteria:

• The T, which describes the size and extent of the tumor.
• The N, which indicates whether the cancer has spread to nearby lymph nodes.
• The M, which indicates whether the cancer has spread to other parts of the body, called metastases.

(see table below)

This information can be found on the pathologic report or a consultation report.

NB: On the platform it is a simplified version of the TNM stadium. In the search fields, only the first number following the letter must be selected (ex: “Pt1c N0i+ M0” = “T1N0M0”)

TNM breast cancer classification chart

The stage of breast cancer is based on a correspondence to the TNM score (see above), which is a system used to describe the extent of cancer spread. There are 5 different stages (0 to IV). The correspondence table below summarizes the different stages according to the TNM score.

It is essential to indicate the stage in order to access clinical trials and targeted drugs. This information can be found on the pathologic report or a consultation report.