Breast cancers during pregnancy

The association of pregnancy with breast cancer is a rare event but its prevalence is increasing. Diagnosis is often delayed due to gravidic changes in the breast. The tumor size is often larger and lymph node involvement seems to be more frequent than in cancers not associated with pregnancy. All histological types can be observed with a large predominance of invasive ductal carcinomas with more grade 3 tumors, vascular emboli and hormone receptor negative, HER2 overexpression and high KI 67.Its management is difficult because the stakes are twofold: to treat the patient as well as possible without compromising the fetal prognosis. The prognosis appears to be more severe because of the delay in diagnosis and the young age of the patients. Abortion does not improve survival. The decision to terminate a pregnancy must be made according to the patient's wishes and therapeutic needs.This is the reason for screening all pregnant women by self-examination and systematic breast examination during prenatal consultations.