What is often the initial study for evaluating endometrial cancer in a patient with abnormal uterine bleeding?

What is often the initial study for evaluating endometrial cancer in a patient with abnormal uterine bleeding?

• A. Endometrial biopsy
• B. Pelvic MRI
• C. Transvaginal ultrasonography
• D. Abdominal X-ray

Answer: (C)

Transvaginal ultrasonography is the initial study because it is noninvasive, widely available, and directly assesses the uterine lining and surrounding structures to guide the next steps. By measuring endometrial thickness and evaluating for abnormalities such as fibroids or polyps, it helps determine whether the endometrium is at risk for pathology. In a patient with abnormal uterine bleeding, a thicker endometrium—especially in a postmenopausal setting—raises concern for endometrial cancer and prompts tissue sampling. If the endometrium is thin, cancer is less likely and further invasive testing may be avoided. Endometrial biopsy, while definitive for diagnosing cancer, is more invasive and is typically reserved for cases with thickened endometrium or persistent/bleeding symptoms despite a normal imaging study. MRI serves mainly for staging or complex scenarios rather than the initial assessment, and abdominal X-ray provides no useful information for endometrial pathology. In summary, TVUS offers essential, noninvasive initial insight to stratify risk and guide whether a biopsy is needed.

Transvaginal ultrasonography is the initial study because it is noninvasive, widely available, and directly assesses the uterine lining and surrounding structures to guide the next steps. By measuring endometrial thickness and evaluating for abnormalities such as fibroids or polyps, it helps determine whether the endometrium is at risk for pathology. In a patient with abnormal uterine bleeding, a thicker endometrium—especially in a postmenopausal setting—raises concern for endometrial cancer and prompts tissue sampling. If the endometrium is thin, cancer is less likely and further invasive testing may be avoided. Endometrial biopsy, while definitive for diagnosing cancer, is more invasive and is typically reserved for cases with thickened endometrium or persistent/bleeding symptoms despite a normal imaging study. MRI serves mainly for staging or complex scenarios rather than the initial assessment, and abdominal X-ray provides no useful information for endometrial pathology. In summary, TVUS offers essential, noninvasive initial insight to stratify risk and guide whether a biopsy is needed.