Abdomen and pelvis: patent processus vaginalis: practice question

A Anatomy 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.

Try it

Anatomy · Abdomen and pelvis: patent processus vaginalis

Sample item

A 6-month-old boy has a soft scrotal swelling that is small in the morning and larger by evening. It transilluminates, and the fluid can be squeezed into the abdomen. Which embryological remnant explains this?

APersistent urachus communicating with the bladderBFailure of the gubernaculum to shortenCEnlarged appendix testisDPatent processus vaginalis connecting to the peritoneal cavity

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

The answer and the reasoning

D. Patent processus vaginalis connecting to the peritoneal cavity

A communicating hydrocele occurs when the processus vaginalis stays patent, allowing peritoneal fluid to track into the tunica vaginalis. The swelling varies during the day with posture, and the same defect allows an indirect inguinal hernia when bowel enters.

Option by option

A. Persistent urachus communicating with the bladder
A persistent urachus presents with umbilical drainage, not a scrotal swelling.
B. Failure of the gubernaculum to shorten
A failed gubernaculum would give an undescended testis, not a fluid-filled sac.
C. Enlarged appendix testis
The appendix testis is a vestigial paramesonephric remnant, which may undergo torsion but does not cause this swelling.
D. Patent processus vaginalis connecting to the peritoneal cavity (correct)
Correct. A patent processus vaginalis lets peritoneal fluid pass into the scrotum.

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.

Questions about this Anatomy question

What is the answer to this Anatomy question?

The best answer is D, Patent processus vaginalis connecting to the peritoneal cavity. A communicating hydrocele occurs when the processus vaginalis stays patent, allowing peritoneal fluid to track into the tunica vaginalis.

Why is "Persistent urachus communicating with the bladder" not the answer?

A persistent urachus presents with umbilical drainage, not a scrotal swelling.

Why is "Failure of the gubernaculum to shorten" not the answer?

A failed gubernaculum would give an undescended testis, not a fluid-filled sac.

Why is "Enlarged appendix testis" not the answer?

The appendix testis is a vestigial paramesonephric remnant, which may undergo torsion but does not cause this swelling.

What concept does this question test?

It tests Abdomen and pelvis: patent processus vaginalis in Anatomy. The swelling varies during the day with posture, and the same defect allows an indirect inguinal hernia when bowel enters.

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 Abdomen and pelvis: patent processus vaginalis?

Learn every nerve by its route, its muscles and what a lesion looks like at the bedside. That one habit answers a large share of questions. Then use the flashcards and the other Anatomy 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.