Urology Practice Questions

Q: A prenatal ultrasound showed bilateral hydronephrosis in a male fetus. A repeat ultrasound scan done a few days later showed bilateral hydronephrosis with a full bladder and reduced amniotic fluid. An emergency Cesarean section was conducted. What is the first likely investigation for the newborn?

Micturating Cystourethrogram. **Explanation:** The clinical presentation of a male fetus with **bilateral hydronephrosis, a distended (full) bladder, and oligohydramnios** (reduced amniotic fluid) is the classic triad for **Posterior Urethral Valves (PUV)**. PUV is the most common cause of bladder outlet obstruction in male newborns and represents a urological emergency. 1. **Why Micturating Cystourethrogram (MCUG) is correct:** MCUG is the **gold standard** and the investigation of choice for diagnosing PUV. It confirms the diagnosis by demonstrating a dilated posterior urethra, a "valve" member, and a thick-walled, trabeculated bladder. It also helps assess for associated Vesicoureteral Reflux (VUR), which occurs in nearly 50% of these cases. 2. **Why other options are incorrect:** * **Ultrasonography (USG):** While USG is the initial screening tool (often showing the "keyhole sign"), it cannot definitively diagnose the cause of obstruction or differentiate between PUV and other conditions like prune belly syndrome. * **DMSA Scan:** This is a nuclear medicine scan used to detect renal scarring or functional cortical mass. It is not used in the acute diagnostic phase of outlet obstruction. * **Renal Doppler:** This assesses blood flow to the kidneys (e.g., renal artery stenosis) and has no role in diagnosing anatomical bladder outlet obstructions. **Clinical Pearls for NEET-PG:** * **Keyhole Sign:** On prenatal USG, the dilated posterior urethra and thick-walled bladder resemble a keyhole; this is highly suggestive of PUV. * **Initial Management:** The first step in management after birth is **bladder catheterization** (using a small feeding tube) to decompress the system, followed by an MCUG for diagnosis. * **Definitive Treatment:** Primary endoscopic fulguration of the valves. * **Potter Sequence:** Severe oligohydramnios due to PUV can lead to pulmonary hypoplasia, the most common cause of death in these neonates.

Q: Which of the following is NOT true about torsion of the testis?

Is commonly associated with pyuria.. **Explanation:** Testicular torsion is a surgical emergency caused by the twisting of the spermatic cord, leading to vascular compromise and potential infarction of the testis. **Why Option B is the Correct Answer (The False Statement):** Pyuria (pus cells in urine) is a hallmark of **Urinary Tract Infection (UTI) or Acute Epididymo-orchitis**, which is the primary differential diagnosis for torsion. Testicular torsion is a mechanical/vascular event, not an infectious one; therefore, the urinalysis is typically normal. The presence of pyuria strongly points away from torsion and toward an inflammatory etiology. **Analysis of Incorrect Options (True Statements):** * **Option A:** Torsion typically presents with a **sudden, agonizing onset of pain** in the groin or lower abdomen, often associated with nausea and vomiting. * **Option C:** **Color Doppler Ultrasound** is the investigation of choice. A positive finding for torsion is the absence or significant reduction of arterial blood flow to the affected testis. * **Option D:** Torsion often occurs due to a congenital anatomical anomaly known as the **"Bell-clapper deformity"** (high investment of tunica vaginalis). Since this anatomical defect is usually bilateral, **prophylactic contralateral orchidopexy** is mandatory to prevent future torsion on the opposite side. **High-Yield Clinical Pearls for NEET-PG:** * **Golden Period:** Salvage rate is nearly 100% if detorsion occurs within **6 hours**; it drops to <10% after 24 hours. * **Prehn’s Sign:** Negative in torsion (pain is not relieved by elevating the testis) but positive in epididymo-orchitis. * **Cremasteric Reflex:** Characteristically **absent** in testicular torsion. * **Angel’s Sign:** The affected testis lies in a high, horizontal position.

Q: What is the period of trial required for maximum response when treating benign prostatic hyperplasia with finasteride?

6 months. **Explanation:** **Finasteride** is a 5-alpha reductase inhibitor (5-ARI) used in the management of Benign Prostatic Hyperplasia (BPH). Its mechanism involves inhibiting the conversion of testosterone to dihydrotestosterone (DHT), the primary androgen responsible for prostatic growth. **Why 6 months is correct:** Unlike Alpha-blockers (e.g., Tamsulosin), which provide rapid symptomatic relief by relaxing smooth muscles, 5-ARIs work by inducing **epithelial atrophy**, leading to a physical reduction in prostate volume (approximately 20–25%). This process is slow and time-dependent. Clinical studies demonstrate that while some improvement may be seen earlier, it takes **6 months** of continuous therapy to achieve the **maximum clinical response** and significant reduction in prostate size. **Analysis of Incorrect Options:** * **1 month (A):** Too short for any significant structural change or volume reduction. * **3 months (B):** Onset of action begins, but peak efficacy regarding symptom score improvement and flow rate is not yet reached. * **18 months (D):** While the drug is taken long-term to prevent progression, the "trial period" to assess maximum initial response is established at 6 months. **High-Yield Clinical Pearls for NEET-PG:** * **Indication:** Best suited for patients with large prostates (**>30-40 grams**). * **PSA Effect:** Finasteride reduces serum PSA levels by **50%**. For screening purposes, the measured PSA in a patient on Finasteride should be **doubled** to estimate the true value. * **Clinical Benefits:** Reduces the risk of acute urinary retention (AUR) and the need for surgical intervention (TURP). * **Side Effects:** Erectile dysfunction, decreased libido, and gynecomastia.

Q: What is the sentinel lymph node for carcinoma of the penis called?

Cloquet's node. **Explanation:** **Correct Answer: C. Cloquet’s node** The lymphatic drainage of the penis primarily occurs via the superficial and deep inguinal lymph nodes. The **sentinel lymph node** for carcinoma of the penis is **Cloquet’s node** (also known as Rosenmüller’s node). It is the highest of the deep inguinal lymph nodes, located within the femoral canal, medial to the femoral vein and just below the inguinal ligament. It serves as a critical clinical marker; if this node is involved, it indicates a high likelihood of spread to the pelvic (iliac) lymph nodes. **Analysis of Incorrect Options:** * **A. Delphian node:** This is a midline prelaryngeal lymph node located on the cricothyroid membrane. It is the sentinel node for **carcinoma of the thyroid** and larynx. * **B. Darwin’s node:** This is not a lymph node. It is a congenital ear condition (Darwin's tubercle), a cartilaginous protuberance on the helix of the ear. * **C. Virchow’s node:** Also known as the "Signal node," this is a left supraclavicular lymph node. Its enlargement (Troisier’s sign) is classically associated with **metastatic gastric cancer** and other abdominal malignancies. **High-Yield Clinical Pearls for NEET-PG:** * **Drainage Pattern:** Glans penis and distal urethra drain directly to **deep inguinal nodes** (including Cloquet’s), while the skin of the penis drains to **superficial inguinal nodes**. * **Cabanas' Node:** Historically, a specific superficial inguinal node was called the sentinel node by Cabanas, but modern surgical practice identifies the **deep inguinal nodes (Cloquet’s)** as the more reliable sentinel indicators. * **EAU Guidelines:** In penile cancer, if inguinal nodes are non-palpable (cN0), Dynamic Sentinel Node Biopsy (DSNB) is the gold standard for staging.

Q: Which of the following is not an appropriate investigation for anterior urethral stricture?

Magnetic Resonance Imaging. **Explanation:** The diagnosis and evaluation of an **anterior urethral stricture** focus on defining the location, length, and depth of the stricture. **Why MRI is the correct answer (Not appropriate):** While MRI (specifically MR Urethrography) can provide detailed images of the pelvic anatomy, it is **not** a routine or appropriate investigation for anterior urethral strictures. It is expensive, time-consuming, and offers no significant advantage over conventional imaging for the anterior segment. MRI is generally reserved for complex **posterior** urethral distractions (e.g., pelvic fracture urethral injuries) to assess prostatic displacement and fibrosis. **Analysis of other options:** * **Retrograde Urethrogram (RGU):** This is the **gold standard** for evaluating anterior urethral strictures. It accurately defines the site and length of the stricture by injecting contrast through the meatus. * **Micturating Cystourethrogram (MCU/VCUG):** While RGU shows the distal end of a stricture, MCU is essential to visualize the **proximal** extent of the stricture and the posterior urethra during voiding. A combination of RGU + MCU is often used to map the stricture completely. * **High-frequency Ultrasound (Sonourethrography):** This is highly effective for the anterior urethra. It is the best modality to assess the degree of **spongiofibrosis** (scarring of the corpus spongiosum), which helps in planning the type of urethroplasty. **Clinical Pearls for NEET-PG:** * **Gold Standard for diagnosis:** Retrograde Urethrogram (RGU). * **Best for Spongiofibrosis:** Sonourethrography (USG). * **Most common site of post-inflammatory stricture:** Bulbar urethra. * **Most common cause of stricture (overall):** Iatrogenic (e.g., catheterization, transurethral surgery). * **Definitive Management:** Urethroplasty (End-to-end anastomosis for 2cm).

Q: Which of the following conditions is characterized by a "golf-hole ureter"?

Genitourinary Tuberculosis. **Explanation:** **Genitourinary Tuberculosis (GUTB)** is the correct answer. The "golf-hole ureter" is a classic cystoscopic finding in chronic renal tuberculosis. It occurs due to extensive fibrosis and cicatrization of the peri-ureteric tissues and the ureter itself. This scarring leads to a shortened, thickened, and rigid ureter that pulls the ureteric orifice upward and outward into a fixed, gaping, and dilated position, resembling a golf hole. **Analysis of Incorrect Options:** * **Ureterocele:** This is a cystic dilatation of the distal intramural ureter. On imaging (IVP), it typically presents with a **"Cobra-head"** or "Adder-head" appearance, not a gaping orifice. * **Vesicoureteric Reflux (VUR):** While VUR involves an incompetent ureterovesical junction, the characteristic cystoscopic finding is often a **"Stadium" or "Horseshoe"** shaped orifice, rather than the rigid, retracted "golf-hole" appearance of TB. * **Carcinoma of the Bladder:** This typically presents as a papillary or solid mass. While it can involve the ureteric orifice causing obstruction, it does not classically produce the specific retracted "golf-hole" morphology. **High-Yield Clinical Pearls for GUTB:** * **Most common site:** Kidney (via hematogenous spread); however, the **Epididymis** is the most common site of clinical presentation in males. * **Urinalysis:** Characterized by **"Sterile Pyuria"** (pus cells present, but routine cultures are negative). * **Putty Kidney:** Refers to autonephrectomy where the kidney becomes a small, shrunken, calcified sac. * **Thimble Bladder:** A small-capacity, fibrotic bladder resulting from chronic TB cystitis.

Q: A young couple has been unsuccessful in conceiving a child over a 4-month period. The 28-year-old wife has had no abnormalities detected in previous investigations. The husband's semen analysis revealed a low volume and azotemia, with a normal follicle-stimulating hormone (FSH) level. What is the most likely diagnosis?

Congenital absence of the vas deferens. **Explanation:** The clinical presentation of **low semen volume** and **azoospermia** (absence of sperm) in the presence of **normal FSH levels** is a classic indicator of **obstructive azoospermia**. 1. **Why Option B is Correct:** Congenital Bilateral Absence of the Vas Deferens (CBAVD) results in an obstruction where sperm cannot reach the ejaculate. Since the seminal vesicles are often also absent or atrophic in these cases (as they develop from the same Wolffian duct), the semen volume is characteristically low (<1.5 ml) and acidic. FSH levels remain normal because spermatogenesis in the testes is typically preserved; the issue is purely structural/transport-related. 2. **Why Incorrect Options are Wrong:** * **Bilateral Testicular Atrophy:** This would result in primary testicular failure (non-obstructive azoospermia), which is characterized by **elevated FSH levels** due to the loss of negative feedback from inhibin and testosterone. * **Hydrocele:** This is a collection of fluid in the tunica vaginalis. While it causes scrotal swelling, it does not typically cause azoospermia or low semen volume. * **Varicocele:** This is a dilation of the pampiniform plexus. While it is a common cause of male infertility (due to increased scrotal temperature), it usually presents with **oligospermia** (low count) or poor motility, not complete azoospermia with low volume. **Clinical Pearls for NEET-PG:** * **CBAVD Association:** Strongly associated with mutations in the **CFTR gene** (Cystic Fibrosis). Always screen for CFTR mutations in these patients. * **FSH as a Marker:** In male infertility, a normal FSH suggests obstructive azoospermia, while a high FSH suggests primary testicular failure (Sertoli cell dysfunction). * **Fructose Test:** Semen in CBAVD is typically **fructose-negative** because fructose is produced in the seminal vesicles, which are usually absent.

Q: Which of the following features are NOT seen in a case of carcinoma of the penis?

Distant metastasis is common. **Explanation:** **Carcinoma of the penis** is primarily a **Squamous Cell Carcinoma (SCC)**. Understanding its natural history is crucial for NEET-PG. **Why Option D is the correct answer:** Distant metastasis is actually **uncommon** in penile cancer, especially in the early stages. The disease primarily spreads via **lymphatic channels** to the inguinal lymph nodes. When distant metastasis does occur (late stages), it typically involves the lungs, liver, or bones, but this is seen in less than 10% of cases at presentation. **Analysis of other options:** * **Option A (Circumcision is protective):** This is a well-established fact. Neonatal circumcision significantly reduces the risk of penile cancer by preventing **phimosis** and the accumulation of **smegma**, which acts as a chronic irritant and carcinogen. * **Option B (Lesion is painless to begin with):** Most penile cancers present as a painless ulcer or a fungating growth. Pain usually develops only if there is secondary infection or deep invasion into the corpora cavernosa. * **Option C (Commonest site is glans penis):** The glans is the most frequent site of origin (approx. 48%), followed by the prepuce (21%). **Clinical Pearls for NEET-PG:** 1. **Lymphatic Spread:** The first site of spread is the **Inguinal Lymph Nodes** (Horizontal group of superficial nodes). 2. **Sentinel Node:** The **Sentinel node of Cabanas** (located near the superficial epigastric vein) was historically considered the first node involved. 3. **Etiology:** Strongly associated with **HPV types 16 and 18**. 4. **Staging:** The most important prognostic factor is the presence and extent of inguinal lymph node metastasis.

Q: A 33-year-old woman presents with severe right flank pain that started 3 hours ago. The pain occasionally radiates to her right iliac fossa. She also reports nausea and a low-grade fever. What is the most appropriate investigation?

Abdominal ultrasound (US) scan. **Explanation:** The clinical presentation of acute-onset severe flank pain radiating to the iliac fossa (ureteric colic) in a young woman strongly suggests **urolithiasis**. **1. Why Option D is Correct:** In the context of NEET-PG and standard clinical guidelines (like EAU/AUA), **Non-Contrast Computed Tomography (NCCT) KUB** is generally the gold standard for diagnosing renal stones. However, in female patients of reproductive age, **Abdominal Ultrasound (USG)** is the preferred initial investigation to avoid ionizing radiation and to rule out differential diagnoses like ovarian torsion or ectopic pregnancy. USG is highly effective at detecting hydronephrosis (secondary to obstruction) and stones in the pelvic-ureteric or vesico-ureteric junctions. **2. Why Other Options are Incorrect:** * **Abdominal X-ray (KUB):** While useful for follow-up of radiopaque stones, it misses radiolucent stones (uric acid) and small stones obscured by bowel gas. It has low sensitivity for acute diagnosis. * **MRI Scan:** MRI is excellent for soft tissue but poor at visualizing calcified stones. It is reserved only for specific cases, such as pregnant patients where USG is inconclusive. * **Intravenous Urography (IVU):** Historically the gold standard, it is now obsolete in acute settings due to the risk of contrast-induced nephropathy and the time required for the procedure. **Clinical Pearls for NEET-PG:** * **Gold Standard Investigation:** NCCT KUB (highest sensitivity and specificity). * **First-line in Pregnancy/Children:** Ultrasound. * **Most common site of stone impaction:** Vesico-ureteric junction (VUJ) — the narrowest part of the ureter. * **Radiolucent stones on X-ray:** "Pure" Uric acid, Xanthine, and Matrix stones (Mnemonic: **U**n**X**-rayable).

Question 1

A prenatal ultrasound showed bilateral hydronephrosis in a male fetus. A repeat ultrasound scan done a few days later showed bilateral hydronephrosis with a full bladder and reduced amniotic fluid. An emergency Cesarean section was conducted. What is the first likely investigation for the newborn?

Accepted Answer

Micturating Cystourethrogram

Answer

Ultrasonography

Answer

DMSA Scan

Answer

Renal Doppler

Question 2

Which of the following is NOT true about torsion of the testis?

Accepted Answer

Is commonly associated with pyuria.

Answer

Presents with sudden pain in the testis.

Answer

Doppler ultrasound shows decreased blood flow to the testis.

Answer

Simultaneous orchidopexy of the contralateral testis should also be done.

Question 3

What is the period of trial required for maximum response when treating benign prostatic hyperplasia with finasteride?

Accepted Answer

6 months

Answer

1 month

Answer

3 months

Answer

18 months

Question 4

During an operation on an unstable, critically ill patient, the left ureter is lacerated through 50% of its circumference. If the patient's condition is too serious to allow time for definitive repair, what is an alternative method of management?

Accepted Answer

Ligation of the injured ureter and ipsilateral nephrostomy

Answer

Ipsilateral nephrectomy

Answer

Placement of a catheter from the distal ureter through an abdominal wall stab wound

Answer

Placement of a suction drain adjacent to the injury without further manipulation

Question 5

What is the sentinel lymph node for carcinoma of the penis called?

Accepted Answer

Cloquet's node

Answer

Delphian node

Answer

Darwin's node

Answer

Virchow's node

Question 6

Which of the following is not an appropriate investigation for anterior urethral stricture?

Accepted Answer

Magnetic Resonance Imaging

Answer

Retrograde urethrogram

Answer

Micturating cystourethrogram

Answer

High frequency ultrasound

Question 7

Which of the following conditions is characterized by a "golf-hole ureter"?

Accepted Answer

Genitourinary Tuberculosis

Answer

Ureterocele

Answer

Vesicoureteric reflux

Answer

Carcinoma of the bladder

Question 8

A young couple has been unsuccessful in conceiving a child over a 4-month period. The 28-year-old wife has had no abnormalities detected in previous investigations. The husband's semen analysis revealed a low volume and azotemia, with a normal follicle-stimulating hormone (FSH) level. What is the most likely diagnosis?

Accepted Answer

Congenital absence of the vas deferens

Answer

Bilateral testicular atrophy

Answer

Hydrocele

Answer

Varicocele

Question 9

Which of the following features are NOT seen in a case of carcinoma of the penis?

Accepted Answer

Distant metastasis is common

Answer

Circumcision is protective

Answer

Lesion is painless to begin with

Answer

Commonest site is glans penis

Question 10

A 33-year-old woman presents with severe right flank pain that started 3 hours ago. The pain occasionally radiates to her right iliac fossa. She also reports nausea and a low-grade fever. What is the most appropriate investigation?

Accepted Answer

Abdominal ultrasound (US) scan

Answer

Abdominal x-ray

Answer

Magnetic resonance imaging (MRI) scan

Answer

Intravenous urography

Urology — MCQs

Urology — MCQs

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