Parasitology: chyluria in filariasis: practice question

A Microbiology 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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Microbiology · Parasitology: chyluria in filariasis

Sample item

A man from a filariasis-endemic coastal area passes milky urine, and fat is demonstrated in it. What explains this?

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

The answer and the reasoning

A. Rupture of obstructed lymphatics into the urinary tract

Lymphatic obstruction by adult Wuchereria bancrofti leads to dilated lymphatics that rupture into the renal pelvis, giving chyluria. Adult worms live in lymphatics, not in the bladder, and the fat is lymph.

Option by option

  • A. Rupture of obstructed lymphatics into the urinary tract (correct)

    Correct. Obstructed lymphatics rupturing into the urinary tract cause chyluria.

  • B. Fat embolism from marrow

    Fat embolism does not produce milky urine.

  • C. Direct invasion of the bladder by adult worms

    Adult worms live in the lymphatics.

  • D. Bacterial cystitis

    Cystitis would give pyuria, not fat.

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 Microbiology questions

Questions about this Microbiology question

What is the answer to this Microbiology question?

The best answer is A, Rupture of obstructed lymphatics into the urinary tract. Lymphatic obstruction by adult Wuchereria bancrofti leads to dilated lymphatics that rupture into the renal pelvis, giving chyluria.

Why is "Fat embolism from marrow" not the answer?

Fat embolism does not produce milky urine.

Why is "Direct invasion of the bladder by adult worms" not the answer?

Adult worms live in the lymphatics.

Why is "Bacterial cystitis" not the answer?

Cystitis would give pyuria, not fat.

What concept does this question test?

It tests Parasitology: chyluria in filariasis in Microbiology. Adult worms live in lymphatics, not in the bladder, and the fat is lymph.

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 Parasitology: chyluria in filariasis?

Make a one-line identity card for each organism: shape and stain, defining test, toxin, disease and drug. Then use the flashcards and the other Microbiology 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.