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Difficulty: HardPreventive Care and Screening

An asymptomatic 67-year-old woman visits her primary care physician to review her preventive health needs. Her past medical history includes hypertension, diet-controlled type 2 diabetes mellitus, and a total abdominal hysterectomy with bilateral salpingo-oophorectomy performed 12 years ago for cervical intraepithelial neoplasia grade 3 (CIN 3). She takes amlodipine daily.

She has a 54 pack-year smoking history but successfully quit 16 years ago. She consumes a glass of wine on weekends and denies any illicit drug use.

Her records indicate the following recent preventive evaluations:
- Screening colonoscopy at age 61 revealed no polyps.
- Screening mammography 6 months ago was interpreted as normal (BI-RADS 1).
- Dual-energy x-ray absorptiometry scan at age 65 showed a T-score of -1.4 at the lumbar spine and -1.2 at the femoral neck.
- Her most recent vaginal cuff cytology combined with human papillomavirus co-testing was performed 4 years ago and was negative.
- She received the 20-valent pneumococcal conjugate vaccine and a two-dose recombinant zoster vaccine series at age 65. She had her annual influenza vaccination 1 month ago.

Physical examination today is unremarkable. Her blood pressure is 128/78 mmHg, and her body mass index is 26 kg/m².

Which of the following is the most appropriate next step in this patient's preventive care?

  1. A
    Annual low-dose computed tomography of the chest
  2. B
    Dual-energy x-ray absorptiometry scan
  3. Vaginal cuff cytology and human papillomavirus testingAnswer
  4. D
    Screening colonoscopy
  5. E
    Ultrasonography of the abdominal aorta

Answer

Vaginal cuff cytology and human papillomavirus testing
The correct answer is vaginal cuff cytology and human papillomavirus testing. Under normal circumstances, cervical cancer screening is discontinued at age 65 with a history of adequate negative prior screening, or immediately following a total hysterectomy for benign indications. However, this patient underwent a hysterectomy for cervical intraepithelial neoplasia grade 3 (CIN 3). According to current ASCCP consensus guidelines, individuals treated for CIN 2, CIN 3, or adenocarcinoma in situ must undergo continued surveillance for 25 years post-treatment, even if this timeline extends beyond age 65. Acceptable surveillance includes HPV testing or co-testing every 3 years. Because her last co-test was 4 years ago, she is currently due for screening.

Step-by-Step Solution

1
Evaluate the patient's gynecologic history and identify indications for continued screening.
The patient had a hysterectomy for CIN 3 twelve years ago. Standard guidelines require cessation of screening at age 65 or after a total hysterectomy for benign disease, but CIN 2/3 is a strict exception.
Prior high-grade dysplasia carries a long-term risk of vaginal cuff malignancy.
2
Determine the required duration and interval for post-CIN 3 screening.
Guidelines mandate continued screening for 25 years post-treatment. The recommended interval for co-testing is every 3 years. Since her last test was 4 years ago, she is currently overdue.
This establishes vaginal cuff evaluation as the definitively indicated next step.
3
Assess the patient's eligibility for lung cancer screening based on her smoking history.
She is 67, has >20 pack-years, but quit 16 years ago. The USPSTF cutoff for screening cessation is quitting >15 years ago.
This rules out the need for an annual low-dose CT scan.
4
Review the remaining preventive interventions (colonoscopy, bone density, AAA screening).
Colonoscopy is not due for another 4 years. Bone density scan is not due for at least another 1-3 years based on mild osteopenia. AAA screening is strictly for males.
Confirms that all other provided options are not indicated at today's visit.

Key Concept

Patients who have undergone a hysterectomy for cervical intraepithelial neoplasia grade 2 or 3 (CIN 2/3) must continue targeted screening of the vaginal cuff for 25 years post-treatment, superseding the usual age 65 cessation rule.
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Topics

Preventive Care and Screening

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