NEW pregnancy-associated cancer mortality data reveal distinct risks across maternal age groups, urging prompt clinical assessment. As more individuals pursue pregnancy at advanced maternal ages, clinicians face an evolving oncological landscape during gestation and the peripartum transition. A nationwide serial cross-sectional analysis of over 22 million live births evaluated pregnancy-associated cancer deaths among women aged 15 to 54 years from 2018 through 2023. During this observation window, 731 maternal cancer deaths occurred, establishing an overall mortality rate of 3.3 deaths per 100,000 live births. Annual rates peaked in 2022 at 3.6 per 100,000 live births, likely reflecting broader disruptions in routine diagnostic surveillance and prenatal care delivery.
Malignancies account for approximately 20 percent of late maternal deaths in the United States. Nearly half of all recorded deaths stemmed from three primary malignancies, led by breast cancer at 22.7 percent, followed by hematologic malignancies at 15.5 percent, and colorectal cancer at 9.6 percent. Additional fatal sites included gastric, lung, central nervous system, cervical, pancreatic, liver, skin cancer, and ovarian malignancies. In late-age pregnancies, age-specific background cancer risks intersect directly with gestation. Diagnostic identification remains challenging because common physiological symptoms of mature gestation, such as tissue hypertrophy, altered bowel habits, and fatigue, frequently mimic early malignant disease. Consequently, more than 70 percent of pregnancy-associated cancer cases are diagnosed postpartum, while only about 25 percent are detected during pregnancy.
Substantial demographic and geographic disparities characterize pregnancy-associated cancer mortality across the country. Non-Hispanic Black women experienced the highest mortality rate at 4.8 deaths per 100,000 live births, substantially exceeding rates observed among non-Hispanic White women at 3.2, Hispanic women at 3.0, and non-Hispanic Asian women at 2.8 per 100,000. Geographic variations revealed the highest regional mortality burden in the South at 3.8 per 100,000 live births, whereas the West recorded the lowest rate at 2.2 per 100,000. State-level rates diverged widely, ranging from 1.4 per 100,000 in California to 7.0 per 100,000 in Virginia. For obstetricians, maternal-fetal medicine specialists, and primary care physicians managing older pregnant patients, maintaining rigorous symptom surveillance beyond delivery is paramount to intercepting aggressive disease early.
Reference
Chen Y et al. Pregnancy-associated cancer death in the United States, 2018-2023. The Oncologist. 2026;31(4):oyag076.
Andrii Zastrozhnov on adobe stock
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