According to established cervical cancer screening guidelines, at what age should routine cytology (Pap smear) screening begin in immunocompetent women?
Answer and explanation
Correct answer: C. 21 years of age
- Step 1: Cervical cancer screening aims to detect persistent oncogenic HPV-mediated high-grade squamous intraepithelial lesions.
- Step 2: Consensus guidelines universally recommend initiating cervical cytology screening at age 21 regardless of age at sexual debut, repeating cytology every 3 years until age 29.
Answer
21 years of age.
Why not the others: Screening at age 15 leads to unnecessary invasive procedures and cervical trauma for transient self-limiting adolescent HPV infections. Age 30 is the threshold where HPV co-testing or primary HPV testing is added to cytology regimens, not the initial screening age. Starting at age 40 misses a decade of high-yield precancerous dysplasia detection.
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