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Difficulty: MediumGynecologic Oncology

During a routine health maintenance visit, a 42-year-old G0P0 patient receives the results of a recent cervical cancer screening. She currently feels well and reports regular, 28-day menstrual cycles. Her medical history is notable for obesity (BMI 33 kg/m233 \text{ kg/m}^2) and diet-controlled type 2 diabetes mellitus. The cytology report reveals atypical glandular cells (AGC). Concurrent testing for high-risk human papillomavirus (HPV) is negative. A subsequent pelvic examination is completely normal, with a grossly normal cervix and no palpable adnexal masses. Which of the following is the most appropriate next step in the diagnosis of this patient?

  1. Colposcopy, endocervical curettage, and endometrial biopsyAnswer
  2. B
    Colposcopy and targeted ectocervical biopsies only
  3. C
    Repeat Papanicolaou test and HPV testing in 12 months
  4. D
    Transvaginal ultrasonography
  5. E
    Diagnostic excisional procedure of the transformation zone

Answer

Colposcopy, endocervical curettage, and endometrial biopsy
Atypical glandular cells (AGC) on cervical cytology is a concerning finding because it carries a relatively high risk for underlying premalignant or malignant disease, including cervical adenocarcinoma in situ, invasive cervical adenocarcinoma, and endometrial adenocarcinoma. Because of this risk, all women found to have AGC require immediate histologic evaluation; expectant management is inadequate, even if concurrent HPV testing is negative. The standard initial evaluation for all patients with AGC includes colposcopy to visualize the ectocervix and endocervical curettage (ECC) to sample the endocervical canal. Furthermore, because AGC can originate from the upper genital tract, an endometrial biopsy is explicitly indicated in all women aged 35 years and older, as well as in women under 35 who have risk factors for endometrial hyperplasia or cancer (such as obesity, nulliparity, or chronic anovulation). Since this patient is 42 years old and has significant risk factors (nulliparity and obesity), the most appropriate step is a comprehensive evaluation comprising colposcopy, ECC, and an endometrial biopsy.

Step-by-Step Solution

1
Analyze the cytology results and the patient's demographics.
The patient has atypical glandular cells (AGC) on a Pap test, is 42 years old, and has significant risk factors for endometrial cancer (obesity, nulliparity).
AGC carries a high risk for cervical and endometrial malignancy, and the specific diagnostic pathway depends heavily on the patient's age and clinical risk factors.
2
Determine the required evaluation for the cervix.
All patients with AGC require colposcopy and endocervical curettage (ECC).
Glandular cells can originate from the endocervical canal or the transformation zone, necessitating direct visualization and sampling.
3
Determine if additional endometrial evaluation is necessary.
An endometrial biopsy is required.
Current guidelines mandate endometrial sampling for any woman with AGC who is 35 years of age or older, or who has risk factors for endometrial cancer.

Key Concept

Diagnostic algorithm for atypical glandular cells (AGC) on cervical cytology
Estimated Time:1m 15s
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Topics

Gynecologic Oncology

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