Abdominal and GI imaging: evacuation proctography: practice question

A Radiology 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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Radiology · Abdominal and GI imaging: evacuation proctography

Sample item

A woman with years of obstructed defecation and a sense of incomplete evacuation needs a test that shows rectocele, rectal intussusception and enterocele dynamically. Which investigation is most suitable?

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

The answer and the reasoning

A. Evacuation proctography (defecography)

Defecography records the rectum and pelvic floor while the patient strains and evacuates barium paste, which shows rectocele, intussusception, enterocele and descent. Static studies miss these dynamic abnormalities. Transit studies assess slow colonic transit and not the mechanics of evacuation.

Option by option

  • A. Evacuation proctography (defecography) (correct)

    Correct. A dynamic study during evacuation shows pelvic floor abnormalities.

  • B. Colonoscopy

    Colonoscopy looks for mucosal disease and cannot assess pelvic floor function.

  • C. Colonic transit marker study

    A marker study measures how fast stool moves through the colon.

  • D. Barium enema

    A barium enema is a static study for colonic mucosal lesions.

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.

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Questions about this Radiology question

What is the answer to this Radiology question?

The best answer is A, Evacuation proctography (defecography). Defecography records the rectum and pelvic floor while the patient strains and evacuates barium paste, which shows rectocele, intussusception, enterocele and descent.

Why is "Colonoscopy" not the answer?

Colonoscopy looks for mucosal disease and cannot assess pelvic floor function.

Why is "Colonic transit marker study" not the answer?

A marker study measures how fast stool moves through the colon.

Why is "Barium enema" not the answer?

A barium enema is a static study for colonic mucosal lesions.

What concept does this question test?

It tests Abdominal and GI imaging: evacuation proctography in Radiology. Static studies miss these dynamic abnormalities. Transit studies assess slow colonic transit and not the mechanics of evacuation.

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 Abdominal and GI imaging: evacuation proctography?

Learn signs with the image, and the disease they point to. Then use the flashcards and the other Radiology 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.