A 35-year-old pregnant woman is at high risk of which malignancy?

NORCET 9 Mains - 2025

Obstetrics & Gynecology

Medium

Appeared in: NORCET 9 Mains - 2025

Explanation

A first full-term pregnancy at an older age (greater than 30-35 years) is a recognized risk factor for breast cancer.
This increased risk is attributed to the prolonged exposure of immature, undifferentiated breast epithelial cells to hormonal influences and potential carcinogens before the protective, maturing effect of a first pregnancy.
Source data indicates that a first live birth occurring after age 35 is associated with a risk ratio of 1.31 to 1.93 for developing breast cancer compared to women who have their first birth at a younger age.

Option B: Pregnancy is protective against ovarian cancer.
Option C: The primary risk factor for cervical cancer is persistent infection with high-risk strains of Human Papillomavirus (HPV), not the age of first pregnancy.
Option D: Pregnancy, especially multiple pregnancies (multiparity), is protective against uterine (endometrial) cancer.

Visual 1: Table: A comparative table showing how pregnancy (parity and age at first birth) impacts the risk for breast, ovarian, uterine, and cervical cancers.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Reproductive risk factors for female malignancies as background academic context rather than a clinical decision trigger.
Nurses play a vital role in patient education regarding cancer risk factors. It's important to explain that while pregnancy is protective for some cancers, a delayed first pregnancy is a risk factor for breast cancer.
A key nursing assessment point is that any breast lump found in a pregnant woman must be taken seriously and evaluated promptly. The first-line imaging is ultrasound.
What if? If the pregnant woman was 25 years old, her pregnancy would be considered a protective factor against breast cancer, reducing her lifetime risk, rather than increasing it.

How to Approach the Question

First, identify the key clinical details in the question: a 35-year-old woman who is pregnant.
Next, analyze the core question: which malignancy is she at high risk for, based on these details?
Recall the relationship between pregnancy and common female cancers. Think about the hormonal environment of pregnancy (high estrogen and progesterone) and the effect of interrupting ovulation.
Systematically evaluate each option: Ovarian and uterine cancer risk is decreased by pregnancy. Cervical cancer is primarily linked to HPV.
This leaves breast cancer. Recall that while parity is generally protective, the age at first full-term pregnancy is a critical modifier. A late first pregnancy (over 30-35) is a known risk factor.
Conclude that the combination of age (35) and pregnancy points specifically to an increased risk for breast cancer.

Concept Tested & Keywords

Concept Tested: Reproductive risk factors for female malignancies
Stem keywords: 35-year-old, pregnant woman, high risk, malignancy
Lead-in keywords: which
Clinical cues: Age 35 is a key detail, as it is considered an advanced maternal age and a cutoff for certain risk calculations.

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