Mastering Medical
USMLE Step 1 · Reproductive

Endometrial cancer vs Cervical and ovarian cancer

How to tell Endometrial cancer and Cervical and ovarian cancer apart when a board question makes them look alike.

Fastest separator

Endometrial cancer bleeds from uterus; cervical cancer bleeds with HPV/Pap cervix clues; ovarian cancer is vague bloating, mass, ascites, and late spread.

Side by side

Endometrial cancerCervical and ovarian cancer
Key clue

Endometrial cancer classically presents with postmenopausal bleeding or abnormal uterine bleeding and is linked to unopposed estrogen or serous p53 disease.

Cervical cancer presents with postcoital bleeding or abnormal Pap/HPV findings; ovarian cancer presents late with bloating, pelvic mass, ascites, and vague GI symptoms.

Mechanism

Endometrial malignant glands arise from estrogen-driven hyperplasia or high-grade serous pathways.

Cervical cancer is usually HPV-driven squamous transformation; ovarian cancers arise from epithelial, germ cell, or sex-cord stromal lineages.

Labs and tests

Endometrial biopsy with invasive carcinoma and ultrasound endometrial thickening support endometrial cancer.

Cervical biopsy after abnormal screening supports cervical cancer; adnexal mass, ascites, CA-125, or omental disease supports ovarian cancer.

The trap

All can cause pelvic symptoms or bleeding, so anatomic source and screening clues separate them.

The repair move

For gynecologic cancer presentations, identify the anatomic source before interpreting bleeding or pelvic symptoms.

Try a free question

Core

A 66-year-old postmenopausal woman with obesity and a history of unopposed estrogen therapy presents with 6 weeks of new vaginal bleeding. Transvaginal ultrasound shows an endometrial thickness of 14 mm. Endometrial biopsy reveals invasive endometrioid adenocarcinoma. Which diagnosis is most likely?

Show answer and explanation

Answer: A. Endometrial adenocarcinoma. Postmenopausal bleeding with endometrial thickening above 4 mm and invasive endometrioid histology defines type 1 estrogen-driven endometrial cancer.

Why the other choices are tempting

  • B. Cervical squamous cell carcinoma presents with postcoital bleeding and abnormal Pap/HPV screening, with the lesion at the cervix on speculum exam.
  • C. Ovarian serous carcinoma presents late with bloating, adnexal mass, ascites, and elevated CA-125 rather than uterine bleeding.
  • D. Atrophic vaginitis causes spotting from thin friable mucosa, not invasive endometrial glands on biopsy.
  • E. Vulvar carcinoma presents as a vulvar mass or ulcer, not endometrial thickening.

Flashcards

Tap a card to flip it.

What symptom classically suggests endometrial cancer?

Postmenopausal bleeding classically suggests endometrial cancer.

What viral association supports cervical cancer?

High-risk HPV infection supports cervical cancer.

Quick answers

What is the fastest way to tell Endometrial cancer from Cervical and ovarian cancer?

Endometrial cancer bleeds from uterus; cervical cancer bleeds with HPV/Pap cervix clues; ovarian cancer is vague bloating, mass, ascites, and late spread.

What is the key clue for Endometrial cancer?

Endometrial cancer classically presents with postmenopausal bleeding or abnormal uterine bleeding and is linked to unopposed estrogen or serous p53 disease.

What is the key clue for Cervical and ovarian cancer?

Cervical cancer presents with postcoital bleeding or abnormal Pap/HPV findings; ovarian cancer presents late with bloating, pelvic mass, ascites, and vague GI symptoms.

What is the common trap with Endometrial cancer vs Cervical and ovarian cancer?

All can cause pelvic symptoms or bleeding, so anatomic source and screening clues separate them.