Endometriosis: ultrasound of endometrioma: practice question

A OBG question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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OBG · Endometriosis: ultrasound of endometrioma

Sample item

A 30-year-old with dysmenorrhoea and infertility has a 5 cm unilocular ovarian cyst with homogeneous low-level internal echoes (ground-glass appearance) and no solid papillary projections or flow. What is the most likely diagnosis?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

A. Endometrioma

An endometrioma, or chocolate cyst, classically appears as a unilocular cyst with ground-glass echoes from old blood, often with other signs such as kissing ovaries. Dermoids show echogenic nodules and acoustic shadows, and malignant tumours have solid components with vascularity. A simple cyst is anechoic.

Option by option

  • A. Endometrioma (correct)

    Correct. Homogeneous low-level echoes in a unilocular cyst typify an endometrioma.

  • B. Serous cystadenocarcinoma

    A malignant tumour would show solid papillary areas with flow.

  • C. Dermoid cyst

    A dermoid shows echogenic areas and shadowing, not uniform ground glass.

  • D. Simple follicular cyst

    A simple cyst is clear and anechoic.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

More OBG questions

Questions about this OBG question

What is the answer to this OBG question?

The best answer is A, Endometrioma. An endometrioma, or chocolate cyst, classically appears as a unilocular cyst with ground-glass echoes from old blood, often with other signs such as kissing ovaries.

Why is "Serous cystadenocarcinoma" not the answer?

A malignant tumour would show solid papillary areas with flow.

Why is "Dermoid cyst" not the answer?

A dermoid shows echogenic areas and shadowing, not uniform ground glass.

Why is "Simple follicular cyst" not the answer?

A simple cyst is clear and anechoic.

What concept does this question test?

It tests Endometriosis: ultrasound of endometrioma in OBG. Dermoids show echogenic nodules and acoustic shadows, and malignant tumours have solid components with vascularity. A simple cyst is anechoic.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Endometriosis: ultrasound of endometrioma?

Learn management algorithms as steps: PPH, eclampsia, ectopic pregnancy. Then use the flashcards and the other OBG questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.