Incidence

Source: Breast Cancer Treatment During Pregnancy (PDQ®)–Health Professional Version, National Cancer Institute.

Source updated: December 4, 2024 · Captured 2026-09-09.

Selected source text with whitespace normalised. This Triangle page is not an NCI PDQ summary.

Context: General Information About Breast Cancer Treatment During Pregnancy

Breast cancer is the most common cancer in pregnant and postpartum women and occurs in about 1 in 3,000 pregnant women. The average patient is between the ages of 32 years and 38 years. Because many women are choosing to delay childbearing, it is likely that the incidence of breast cancer during pregnancy will increase.

Preserved source evidence · Not medical advice