Urology Practice Questions

Q: Which of the following is a common presentation of genitourinary tuberculosis in a male patient?

Bacteriuria without pyuria. **Explanation:** Genitourinary Tuberculosis (GUTB) is the second most common site of extrapulmonary tuberculosis. The hallmark clinical finding in GUTB is **Sterile Pyuria** (pus cells in the urine without growth on standard culture media). However, the classic presentation described in this context is **Bacteriuria without Pyuria** (or more accurately, the presence of *Mycobacterium tuberculosis* bacilli in the urine without a significant neutrophilic response in early or specific stages). *Note: While "Sterile Pyuria" is the most famous association, NEET-PG often tests the presence of the organism (bacteriuria) in the absence of common pyogenic bacteria.* **Analysis of Options:** * **Option B (Correct):** In GUTB, the urine is acidic. While pyuria is common, the "bacteriuria" refers to the shedding of tubercle bacilli. The absence of common pyogenic organisms on routine culture makes it a distinctive feature. * **Option A:** Incorrect. Tuberculous epididymitis typically presents as a **painless**, "beaded," or "knobby" enlargement of the epididymis, often associated with a thickened vas deferens. * **Option C:** Incorrect. GUTB leads to destructive lesions like "moth-eaten" calyces, infundibular strictures, and eventually a "putty kidney" (autonephrectomy), rather than simple unilateral cysts. * **Option D:** Incorrect. While hematuria can occur, it is usually a late feature. Sterile pyuria is a far more consistent and "common" diagnostic clue. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** Culture on **Lowenstein-Jensen (LJ) medium** (takes 6–8 weeks). * **Earliest Radiological Sign:** Erosion of the tips of the papillae (moth-eaten appearance of calyces) on IVP. * **Thimble Bladder:** A small-capacity, fibrotic, contracted bladder resulting from chronic TB cystitis. * **Golf-hole Ureter:** A gaping, retracted ureteric orifice due to fibrosis.

Q: Which of the following statements about paraphimosis is true?

All of the above. **Explanation:** **Paraphimosis** is a urological emergency where the prepuce (foreskin), once retracted behind the glans penis, cannot be reduced to its normal position. This leads to a tight constricting ring that impairs venous and lymphatic drainage, causing progressive edema of the glans and prepuce. **Why "All of the above" is correct:** * **Option A (Induced by urinary catheter):** This is a classic clinical scenario. During urethral catheterization, the foreskin is retracted to clean the glans. If the healthcare provider forgets to pull the foreskin back over the glans after the procedure, paraphimosis develops. * **Option B (Circumcision):** While manual reduction is the first-line treatment, **circumcision** (or a dorsal slit) is the definitive surgical treatment to prevent recurrence once the acute inflammation and edema have subsided. * **Option C (Hyaluronidase injection):** This is an adjunct medical management technique. Injecting hyaluronidase into the edematous prepuce breaks down hyaluronic acid, facilitating the rapid dispersion of extracellular fluid and making manual reduction easier. **High-Yield Clinical Pearls for NEET-PG:** 1. **Phimosis vs. Paraphimosis:** Phimosis is the inability to retract the foreskin; Paraphimosis is the inability to *reduce* a retracted foreskin. 2. **Emergency Status:** Paraphimosis is a surgical emergency because it can lead to arterial occlusion and **glans gangrene** if left untreated. 3. **Initial Management:** Manual compression of the glans (to reduce edema) followed by the **Dundee technique** (multiple needle punctures to drain fluid) or osmotic agents (granulated sugar/ice packs) are often tested. 4. **Definitive Management:** Dorsal slit (emergency) or Circumcision (elective/definitive).

Q: Persistent urachus is a risk factor for which type of bladder cancer?

Adenocarcinoma of the bladder. **Explanation:** The urachus is a fibrous remnant of the **allantois**, which normally obliterates to form the median umbilical ligament. It is lined by **glandular epithelium** (columnar epithelium). When the urachus fails to obliterate (persistent urachus), this glandular lining can undergo malignant transformation. Because the tissue of origin is glandular, the resulting malignancy is almost exclusively **Adenocarcinoma**. **Why the other options are incorrect:** * **Transitional Cell Carcinoma (TCC):** This is the most common type of bladder cancer overall (90%), arising from the urothelium. However, it is associated with smoking and aniline dyes, not urachal remnants. * **Squamous Cell Carcinoma (SCC):** This is typically associated with chronic irritation, such as **Schistosomiasis (Bilharziasis)** infection or long-term indwelling catheters/bladder stones. * **Undifferentiated Carcinoma:** This is a rare, aggressive form of bladder cancer that lacks specific histological features of the other types and is not specifically linked to urachal anomalies. **Clinical Pearls for NEET-PG:** * **Location:** Urachal adenocarcinoma typically occurs at the **dome of the bladder** (the most common site for this specific subtype). * **Classic Presentation:** A patient presenting with **mucusuria** (mucus in urine) and a midline mass between the umbilicus and the symphysis pubis. * **Rule of Thumb:** While TCC is the most common bladder cancer generally, **Adenocarcinoma** is the most common cancer found in a **persistent urachus** or **exstrophy of the bladder**. * **Management:** Requires radical cystectomy with en bloc resection of the urachal ligament and umbilicus.

Q: Sterile pyuria is characteristically seen in?

Renal Tuberculosis. **Explanation:** **1. Why Renal Tuberculosis is the Correct Answer:** **Sterile pyuria** is defined as the presence of white blood cells (pus cells) in the urine (>5 WBCs/hpf) in the absence of growth on routine aerobic culture media. In **Renal Tuberculosis (Genitourinary TB)**, the *Mycobacterium tuberculosis* bacilli cause chronic inflammation and ulceration of the urothelium, leading to the shedding of WBCs. However, because *M. tuberculosis* does not grow on standard agar used for common pyogenic bacteria (like *E. coli*), the routine culture remains "sterile." This is a classic hallmark of GU-TB. **2. Why Other Options are Incorrect:** * **Chronic Hydronephrosis:** This is a structural dilatation of the renal pelvis and calyces. While it can predispose to infection, it does not characteristically present with sterile pyuria unless a specific secondary infection is present. * **Wilm’s Tumor (Nephroblastoma):** This is a pediatric renal malignancy. It typically presents as an asymptomatic abdominal mass or hematuria, not pyuria. * **Neuroblastoma:** This is an extra-renal tumor (usually arising from the adrenal medulla). It may displace the kidney but does not cause intrinsic pyuria. **3. Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** For Renal TB, the gold standard is a culture on **Lowenstein-Jensen (LJ) medium**, though automated liquid cultures (MGIT) are faster. * **Imaging:** Look for "moth-eaten" calyces on IVP (early sign) or a "Putty kidney" (autonephrectomy) in end-stage disease. * **Other causes of Sterile Pyuria:** Partially treated UTI, Urolithiasis, Chlamydia/Ureaplasma infections, and Interstitial Cystitis. * **Most common site:** The **epididymis** is the most common site of TB in the male reproductive tract, while the **kidney** is the most common site in the urinary tract.

Q: What is the best investigation to detect renal stones?

CT scan. **Explanation:** The investigation of choice for detecting renal and ureteric stones is a **Non-Contrast Computed Tomography (NCCT) of the Kidney, Ureter, and Bladder (KUB)**. **Why CT Scan is the Correct Answer:** NCCT KUB is the gold standard due to its extremely high sensitivity (95-100%) and specificity. It can detect almost all types of stones, including **radiolucent stones** (like uric acid stones) that are invisible on X-rays. Furthermore, CT provides critical information for surgical planning, such as the stone's precise size, location, skin-to-stone distance, and **Hounsfield Units (HU)**, which indicate stone density/hardness. **Why Other Options are Incorrect:** * **X-ray (KUB):** It can only detect radiopaque stones (e.g., Calcium oxalate). It misses radiolucent stones and small stones obscured by bowel gas. Approximately 10-15% of urinary stones are radiolucent. * **Ultrasound (USG):** While it is the initial investigation of choice in pregnant women and children (to avoid radiation), it is operator-dependent and often misses small ureteric stones. It is excellent for detecting hydronephrosis but less sensitive for stone sizing. * **MRI:** Most urinary stones do not yield a signal on MRI, making them appear as signal voids. It is expensive, time-consuming, and significantly inferior to CT for stone detection. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard/Best Investigation:** NCCT KUB. * **Investigation of Choice in Pregnancy:** Ultrasound (1st line); MRI (2nd line if USG is inconclusive). * **Most Radiopaque Stone:** Calcium phosphate (Apatite). * **Purely Radiolucent Stones:** Uric acid, Xanthine, and Indinavir stones (Indinavir stones are the only ones not seen even on CT). * **Steinhagen Sign:** A CT finding where a "rim" of soft tissue edema surrounds a ureteric stone, helping differentiate it from a phlebolith.

Q: Which of the following substances forms radiopaque stones?

Oxalate. **Explanation:** The radiopacity of a urinary stone depends on its atomic weight and density. Calcium, having a high atomic number, is the primary element responsible for making stones visible on a plain X-ray (KUB). **1. Why Oxalate is Correct:** Calcium Oxalate (both monohydrate and dihydrate) is the most common type of urinary stone. Because it contains **calcium**, it is highly **radiopaque**. Calcium oxalate monohydrate stones are typically very hard and appear as dense shadows on radiographs. **2. Why Incorrect Options are Wrong:** * **Uric Acid:** These are the classic **radiolucent** stones. They are formed in acidic urine and do not contain heavy metals or calcium, making them invisible on plain X-rays (though they are visible on NCCT). * **Xanthine:** These are rare stones caused by a genetic deficiency of xanthine oxidase or the use of Allopurinol. Like uric acid, they are **radiolucent**. **3. NEET-PG High-Yield Pearls:** To master stone radiopacity, remember this hierarchy (from most opaque to least): * **Radiopaque:** Calcium Phosphate (most opaque) > Calcium Oxalate > Magnesium Ammonium Phosphate (Struvite/Triple Phosphate). * **Radiolucent (Pure):** **U**ric acid, **X**anthine, **I**ndinavir (HIV medication), and **M**atrix stones. (Mnemonic: **U**n-**X**-rayable **I**nvisibles). * **Semi-opaque/Ground Glass:** Cystine stones (due to sulfur content). **Clinical Note:** While uric acid stones are radiolucent on X-ray, **Non-Contrast CT (NCCT) KUB** is the gold standard investigation because it can detect almost all stones (except Indinavir stones).

Q: Orchiectomy is not indicated in which of the following conditions?

Tubercular epididymitis. **Explanation:** The correct answer is **Tubercular epididymitis** because it is a medical condition treated primarily with **Antitubercular Therapy (ATT)**. Surgery is reserved only for complications like cold abscesses or persistent sinuses. Orchiectomy is avoided because the goal is to preserve testicular function, as the infection usually starts in the epididymis and the testis is often involved only secondarily. **Analysis of Options:** * **Seminoma Testis:** High Inguinal Orchidectomy (HIO) is the gold standard treatment for all malignant testicular tumors. A trans-scrotal approach is contraindicated to prevent lymphatic spread to inguinal nodes. * **Prostatic Carcinoma:** Bilateral Orchidectomy (Therapeutic Castration) is a form of **Androgen Deprivation Therapy (ADT)**. It is indicated in metastatic prostate cancer to remove the primary source of testosterone, which fuels tumor growth. * **Male Breast Cancer:** Historically, bilateral orchidectomy was performed as palliative hormonal therapy to reduce estrogen/androgen levels, as male breast cancers are frequently hormone-receptor positive. **NEET-PG High-Yield Pearls:** 1. **High Inguinal Orchidectomy (HIO):** The incision is made at the internal inguinal ring; the spermatic cord is clamped first to prevent intraoperative seedling of tumor cells. 2. **TB Epididymitis:** Characterized by a "beaded" vas deferens and a "craggy" epididymis. It is the most common site of urogenital TB in males. 3. **Subcapsular Orchidectomy:** A variation used in prostate cancer where only the glandular tissue is removed, leaving the tunica albuginea for better cosmetic/psychological outcomes.

Q: A patient presents with a 'bag of worms' sensation in the scrotum. What is the most likely diagnosis?

Varicocele. **Explanation:** **Varicocele** is the correct diagnosis. It refers to the abnormal dilation and tortuosity of the pampiniform plexus of veins within the spermatic cord. The classic clinical description of a **"bag of worms"** sensation is due to these engorged, palpable veins. It is most commonly found on the **left side** (approx. 90%) due to the left testicular vein entering the left renal vein at a right angle, leading to increased hydrostatic pressure. **Why the other options are incorrect:** * **Hydrocele:** This is a collection of fluid within the tunica vaginalis. It presents as a smooth, fluctuant, non-tender swelling that **transilluminates** brightly, unlike the "worm-like" texture of a varicocele. * **Torsion of Testis:** This is a surgical emergency characterized by sudden, agonizing pain, a high-riding testis, and a negative Prehn’s sign. It does not present with a chronic "bag of worms" sensation. * **Congenital Hernia:** An indirect inguinal hernia presents as a swelling that may extend into the scrotum. It typically has an expansile cough impulse and is reducible, rather than feeling like a cluster of veins. **High-Yield Clinical Pearls for NEET-PG:** * **Infertility:** Varicocele is the most common reversible cause of male infertility (due to increased scrotal temperature and oxidative stress). * **Diagnosis:** Gold standard is **Color Doppler Ultrasound**. * **Grading:** Grade I (palpable only during Valsalva), Grade II (palpable while standing), Grade III (visible through scrotal skin). * **Red Flag:** A sudden onset, right-sided varicocele in an older man should raise suspicion of **Renal Cell Carcinoma (RCC)** obstructing the IVC.

Question 1

Which of the following is used for the prevention of struvite stones?

Accepted Answer

Acetohydroxamic acid

Answer

Urine alkalinizer

Answer

Tiopronin

Answer

D-Penicillamine

Question 2

Which of the following is a common presentation of genitourinary tuberculosis in a male patient?

Accepted Answer

Bacteriuria without pyuria

Answer

Painful and tender epididymis

Answer

Renal cysts (unilateral)

Answer

Microscopic hematuria

Question 3

Which of the following statements about paraphimosis is true?

Accepted Answer

All of the above

Answer

It can be induced by a urinary catheter.

Answer

Circumcision is a treatment for paraphimosis.

Answer

Hyaluronidase injection is a treatment for paraphimosis.

Question 4

In which of the following diseases is overall survival increased by screening procedures?

Accepted Answer

Colon cancer

Answer

Prostate cancer

Answer

Lung cancer

Answer

Ovarian cancer

Question 5

Persistent urachus is a risk factor for which type of bladder cancer?

Accepted Answer

Adenocarcinoma of the bladder

Answer

Transitional cell carcinoma of the bladder

Answer

Squamous cell carcinoma of the bladder

Answer

Undifferentiated carcinoma of the bladder

Question 6

Sterile pyuria is characteristically seen in?

Accepted Answer

Renal Tuberculosis

Answer

Chronic Hydronephrosis

Answer

Wilm's Tumor

Answer

Neuroblastoma

Question 7

What is the best investigation to detect renal stones?

Accepted Answer

CT scan

Answer

X-ray

Answer

MRI

Answer

Ultrasound

Question 8

Which of the following substances forms radiopaque stones?

Accepted Answer

Oxalate

Answer

Xanthine

Answer

Uric acid

Answer

None of the above

Question 9

Orchiectomy is not indicated in which of the following conditions?

Accepted Answer

Tubercular epididymitis

Answer

Seminoma testis

Answer

Prostatic carcinoma

Answer

Male breast cancer

Question 10

A patient presents with a 'bag of worms' sensation in the scrotum. What is the most likely diagnosis?

Accepted Answer

Varicocele

Answer

Hydrocele

Answer

Torsion of testis

Answer

Congenital hernia

Urology — MCQs

Urology — MCQs

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