Urology — MCQs

Urology Indian Medical PG Practice Questions and MCQs

Question 301: A child presents with complaints of abdominal colic and hematuria. Ultrasonography showed a renal stone 2.5 cm in diameter in the renal pelvis. What is the next step in the management of this case?

A. Extracorporeal Shock Wave Lithotripsy (ESWL) (Correct Answer)
B. Pyelolithotomy
C. Nephroureterostomy
D. Conservative management

Explanation: **Explanation:** The management of pediatric urolithiasis differs significantly from adults due to the smaller anatomy but higher clearance rates of stone fragments. **1. Why ESWL is the correct answer:** In the pediatric population, **Extracorporeal Shock Wave Lithotripsy (ESWL)** is the first-line treatment for most renal stones, even those up to **2.5 cm** in diameter. Children have more elastic tissues and a shorter distance from the skin to the stone, which allows for more efficient fragmenting. Furthermore, their ureters are more distensible, facilitating the passage of larger fragments (the "Steinstrasse" phenomenon is less common or better tolerated in children than in adults). For a 2.5 cm stone in the renal pelvis, ESWL offers a non-invasive approach with high success rates. **2. Why other options are incorrect:** * **Pyelolithotomy:** This is an open surgical procedure. With the advent of minimally invasive techniques (ESWL and PCNL), open surgery is reserved only for complex staghorn calculi or cases with concomitant anatomical abnormalities (e.g., UPJ obstruction). * **Nephroureterostomy:** This is a diversion procedure (placing a tube) to relieve obstruction or provide drainage; it does not treat the underlying stone. * **Conservative management:** Stones >5-7 mm are unlikely to pass spontaneously, especially a 2.5 cm stone in the pelvis which requires active intervention to prevent recurrent colic and renal damage. **Clinical Pearls for NEET-PG:** * **Adults vs. Children:** In adults, ESWL is typically preferred for stones <2 cm. In children, the threshold is higher (up to 2.5 cm). * **PCNL in Children:** Percutaneous Nephrolithotomy (PCNL) is considered for stones >2.5 cm or when ESWL fails. * **Lower Pole Stones:** If the stone were in the lower pole and >1 cm, PCNL might be preferred over ESWL due to poor gravity-dependent clearance.

Question 302: All of the following are true about prostate-specific antigen except?

A. Normal level is 10-14 ng/ml (Correct Answer)
B. It may be elevated in BPH and Ca Prostate
C. It is produced by the prostate
D. It is a glycoprotein

Explanation: **Explanation** Prostate-Specific Antigen (PSA) is a vital biomarker in urological practice. The correct answer is **Option A** because the statement is factually incorrect; the normal reference range for serum PSA is generally considered to be **0–4 ng/ml**. Levels between 4–10 ng/ml are often referred to as the "gray zone," while levels above 10 ng/ml significantly increase the suspicion of malignancy. **Analysis of other options:** * **Option B:** PSA is organ-specific but not cancer-specific. It can be elevated in both **Benign Prostatic Hyperplasia (BPH)** and **Carcinoma Prostate**, as well as in prostatitis, urinary retention, or following digital rectal examination (DRE) and biopsy. * **Option C:** It is produced by the **ductal and acinar epithelium** of the prostate gland. Its physiological function is to liquefy the seminal coagulum. * **Option D:** PSA is biochemically a **serine protease** (kallikrein-like) and is structurally a **glycoprotein**. **High-Yield Clinical Pearls for NEET-PG:** * **PSA Velocity:** An increase of >0.75 ng/ml per year is suspicious for malignancy, even if the total PSA is <4 ng/ml. * **PSA Density:** Calculated as Serum PSA divided by Prostate Volume (via TRUS). A value >0.15 is suggestive of cancer. * **Free/Total PSA Ratio:** In prostate cancer, the percentage of free PSA decreases. A ratio **<15-20%** is suspicious for malignancy. * **Age-specific PSA:** Normal limits increase with age (e.g., <2.5 for 40-49 years; <6.5 for 70-79 years) due to increasing prostate volume.

Question 303: What is the standard treatment for seminoma?

A. High inguinal orchidectomy with radiotherapy (Correct Answer)
B. Radiotherapy alone
C. Chemotherapy alone
D. Trans scrotal resection of the testis

Explanation: **Explanation:** The management of **Seminoma**, the most common germ cell tumor (GCT) of the testis, is based on its extreme sensitivity to both radiation and chemotherapy. **1. Why Option A is Correct:** The gold standard for any suspected testicular malignancy is a **High Inguinal Orchidectomy**. This procedure allows for definitive histological diagnosis and local control while preventing the risk of lymphatic spread to scrotal/inguinal nodes. Following surgery, **Radiotherapy (RT)** to the retroperitoneal lymph nodes (para-aortic) is the traditional standard for Stage I seminoma to prevent recurrence, as seminomas are highly radiosensitive. **2. Why Other Options are Incorrect:** * **Option B & C:** Surgery is the mandatory first step for diagnosis and primary treatment. Radiotherapy or Chemotherapy are *adjuvant* modalities and cannot replace orchidectomy. * **Option D:** Trans-scrotal resection is **contraindicated** in testicular cancer. Violating the scrotum alters the lymphatic drainage, potentially leading to inguinal lymph node metastasis (the testis normally drains to para-aortic nodes). **High-Yield Clinical Pearls for NEET-PG:** * **Tumor Markers:** Seminomas may show elevated **hCG** (in 10-15% of cases) but **never** elevated Alpha-Fetoprotein (AFP). If AFP is high, it is a Non-Seminomatous GCT (NSGCT). * **Radiosensitivity:** Seminoma = Radiosensitive; NSGCT = Radioresistant. * **Modern Trend:** While RT is the classic answer, single-dose **Carboplatin** or active surveillance are now increasingly used for Stage I seminoma to avoid long-term radiation side effects. * **Advanced Disease:** For Stage IIb and III, the treatment of choice is **BEP Chemotherapy** (Bleomycin, Etoposide, Cisplatin).

Question 304: Which of the following is the most common cause of delayed urinary tract obstructive symptoms after TURP?

A. Stricture of the Navicular fossa
B. Stricture of the membranous urethra
C. Stricture of the bulb of urethra
D. Bladder neck stenosis (Correct Answer)

Explanation: **Explanation:** **Bladder neck stenosis (BNS)**, also known as bladder neck contracture, is the most common cause of delayed urinary tract obstruction following Transurethral Resection of the Prostate (TURP). It typically occurs due to excessive resection or over-cauterization at the 6 o'clock and 12 o'clock positions, leading to circumferential scarring and fibrosis at the vesical neck. It is particularly common in patients with smaller prostate glands (<30 grams). **Analysis of Options:** * **Bladder neck stenosis (Correct):** It is the most frequent late complication (incidence 2–3%). The symptoms usually manifest months to years after the procedure as a progressive weakening of the urinary stream. * **Stricture of the Navicular fossa (Incorrect):** This is usually caused by using a large-diameter resectoscope sheath or inadequate lubrication at the meatus. While common, it is less frequent than bladder neck issues. * **Stricture of the bulb of urethra (Incorrect):** Bulbar strictures are often related to pressure necrosis from the resectoscope or electrical "leaks" due to poor insulation. While a known complication, it ranks behind bladder neck stenosis in frequency. * **Stricture of the membranous urethra (Incorrect):** This is rare after TURP. The membranous urethra is the site of the external sphincter; injury here usually results in **incontinence**, not a delayed stricture. **High-Yield Pearls for NEET-PG:** * **Most common early complication of TURP:** Hemorrhage. * **Most common late complication of TURP:** Retrograde ejaculation (up to 70–80%). * **TURP Syndrome:** Caused by the absorption of glycine (hypotonic solution), leading to dilutional hyponatremia and CNS symptoms. * **Triad of BNS:** Small prostate, excessive resection, and delayed obstructive symptoms.

Question 305: Carcinoma of the testis, to which anatomical location does lymphatic metastasis typically occur first?

A. Para-aortic lymph nodes (Correct Answer)
B. Superficial inguinal nodes
C. Deep inguinal nodes
D. Internal iliac nodes

Explanation: **Explanation:** The lymphatic drainage of the testis is determined by its embryological origin. During fetal development, the testes originate in the retroperitoneum near the level of the **L2 vertebra** and subsequently descend into the scrotum. As they descend, they carry their original blood supply (testicular arteries from the aorta) and lymphatic drainage with them. 1. **Why Para-aortic nodes are correct:** The primary lymphatic drainage of the testis follows the testicular veins back to the retroperitoneum. Specifically, the lymphatics drain into the **para-aortic (lumbar) lymph nodes** at the level of the renal hilum (L1-L2). For the right testis, the primary station is the inter-aortocaval nodes; for the left, it is the para-aortic nodes. 2. **Why other options are incorrect:** * **Superficial and Deep Inguinal Nodes:** These nodes drain the **scrotal skin**, not the testis itself. They only become involved in testicular cancer if the tumor invades the scrotal wall or if there has been prior inguinal/scrotal surgery (altering the drainage pathway). * **Internal Iliac Nodes:** These typically drain pelvic organs like the prostate, bladder base, and upper rectum, but not the testis. **High-Yield Clinical Pearls for NEET-PG:** * **Scrotal Biopsy Contraindication:** Never perform a trans-scrotal biopsy for a suspected testicular mass. This "seeds" the tumor into the inguinal lymph nodes, changing the natural lymphatic spread. The standard approach is **Radical Inguinal Orchidectomy**. * **Choriocarcinoma:** This specific germ cell tumor is notorious for early **hematogenous spread** (to lungs/brain) rather than just lymphatic spread. * **Left vs. Right:** The left testicular vein drains into the left renal vein, while the right drains directly into the IVC. This anatomical difference is also why varicoceles are more common on the left side.

Question 306: A patient with a suspected pelvic fracture presents with urethral bleeding and inability to pass urine. What is the immediate management step?

A. Encourage voiding after administration of antibiotics and analgesics.
B. Immediate catheterization in the ward.
C. Application of a hot water bottle followed by carbachol injection.
D. Prepare for surgery and attempt catheterization in the operating theatre. (Correct Answer)

Explanation: ### Explanation **1. Why Option D is Correct:** The clinical presentation of **pelvic fracture, urethral bleeding (urethrorrhagia), and inability to void** is a classic triad suggesting a **Posterior Urethral Injury (PUI)**. In such cases, blind catheterization in the ward is strictly contraindicated as it may convert a partial urethral tear into a complete transection. The standard protocol is to attempt a single, gentle catheterization by an experienced surgeon under sterile conditions in the **Operating Theatre (OT)**. If the catheter passes, it acts as a stent; if it meets resistance, the attempt is abandoned to avoid further trauma, and a **Suprapubic Cystostomy (SPC)** is performed. **2. Why Other Options are Incorrect:** * **Option A:** Encouraging voiding is dangerous. If the urethra is ruptured, urine will extravasate into the pelvic space, leading to chemical cellulitis and potential sepsis. * **Option B:** Blind catheterization in the ward is the most common "distractor" and a major clinical error. It risks worsening the injury and introducing infection into a pelvic hematoma. * **Option C:** Carbachol (a cholinergic) and heat are used for functional urinary retention (e.g., post-operative atony). In trauma, the obstruction is mechanical/structural; stimulating bladder contraction against a ruptured urethra will cause massive urinary extravasation. **3. NEET-PG High-Yield Pearls:** * **Gold Standard Investigation:** Retrograde Urethrogram (RUG) is the investigation of choice to diagnose the site and severity of the tear. * **Classic Sign:** "High-riding prostate" on Digital Rectal Examination (DRE) due to disruption of puboprostatic ligaments. * **Associated Fracture:** PUI is most commonly associated with "Malgaigne fractures" or "Open-book" pelvic fractures. * **Management Priority:** Always stabilize the patient (ABCDE) and the pelvic ring before definitive urethral repair.

Question 307: A 10-year-old girl was evaluated for recurrent UTI and dysuria. An IVP finding is shown. What is the preferred treatment option for this case?

A. Endoscopic incision (Correct Answer)
B. Nephrectomy with pyeloureterectomy
C. STING operation
D. Lich-Gregoir technique

Explanation: ***Endoscopic incision*** - **Endoscopic incision** is the preferred first-line treatment for **ureterocele** (cobra head sign on IVP) in children, offering minimal invasivity with excellent success rates. - It provides immediate drainage relief and preserves **renal function** while avoiding major surgical complications in pediatric patients. *Nephrectomy with pyeloureterectomy* - This is an **extreme surgical approach** reserved for cases with **non-functioning kidneys** or severe complications, not as first-line treatment. - **Unnecessary loss of renal tissue** in a child when simpler endoscopic options can effectively treat the ureterocele. *STING operation* - **Subureteral injection** is used for **vesicoureteral reflux** treatment, not for ureterocele management. - Does not address the **anatomical obstruction** caused by the ureterocele that requires decompression. *Lich-Gregoir technique* - This **ureteroneocystostomy** technique is used for **ureteral reimplantation** in cases of reflux or ureteral strictures. - **Not indicated** for ureterocele treatment where endoscopic decompression is the preferred initial approach.

Question 308: Operative management of varicocele is indicated in all of the following conditions except?

A. Ipsilateral testis of small size
B. Oligospermia on semen analysis
C. Grade 3 varicocele (large size)
D. Signs or symptoms absent (Correct Answer)

Explanation: **Explanation:** The management of varicocele is primarily conservative unless specific clinical criteria are met. The goal of surgery (Varicocelectomy) is to prevent progressive testicular damage and improve fertility potential. **Why "Signs or symptoms absent" is the correct answer:** Asymptomatic varicoceles (especially subclinical ones detected only on ultrasound) do not require surgical intervention. In the absence of pain, testicular atrophy, or infertility, the standard of care is observation and periodic reassessment. Surgery is not indicated for the mere presence of dilated veins if they are not causing physiological or clinical harm. **Analysis of Incorrect Options:** * **Ipsilateral testis of small size:** This indicates testicular atrophy or growth arrest (common in adolescents). A difference of >20% in volume between the two testes is a strong indication for surgery to allow for "catch-up" growth. * **Oligospermia on semen analysis:** Varicoceles are the most common reversible cause of male infertility. Surgery is indicated when there is abnormal semen parameters (low count, motility, or morphology) in a patient trying to conceive. * **Grade 3 varicocele:** Large, visible varicoceles (Grade 3) are more likely to cause progressive damage and discomfort compared to Grade 1 or 2. In many clinical guidelines, a high-grade varicocele associated with symptoms or potential fertility issues warrants surgery. **Clinical Pearls for NEET-PG:** * **Most common side:** Left side (due to the left spermatic vein entering the left renal vein at a right angle). * **Sudden onset right-sided varicocele:** Always rule out **Renal Cell Carcinoma (RCC)** obstructing the IVC. * **Gold Standard Investigation:** Color Doppler Ultrasound. * **Surgery of Choice:** Microsurgical Subinguinal Varicocelectomy (lowest recurrence and complication rates).

Question 309: Which of the following is an alkaline type of renal calculi?

A. Calcium stone (Correct Answer)
B. Uric acid stone
C. Cystine stone
D. All of the above

Explanation: In renal stone pathology, the **urinary pH** plays a critical role in the precipitation of specific crystals. **Correct Option: A (Calcium stone)** Calcium-based stones, specifically **Calcium Phosphate**, typically form in **alkaline urine** (pH > 7.2). While Calcium Oxalate stones (the most common type) are relatively independent of pH, they are frequently grouped under alkaline-associated stones in competitive exams because their counterparts (Uric acid and Cystine) are strictly associated with acidic environments. Additionally, **Struvite stones** (Triple phosphate) are the classic alkaline stones, often associated with urea-splitting organisms like *Proteus*. **Incorrect Options:** * **B. Uric acid stone:** These form exclusively in **acidic urine** (pH < 5.5). Uric acid is poorly soluble in acidic medium; thus, the primary treatment involves urinary alkalinization using Potassium Citrate. * **C. Cystine stone:** These are caused by an autosomal recessive defect in the COLA transporter. They precipitate in **acidic urine**. Management requires aggressive hydration and alkalinization of urine to a pH > 7.5 to increase cystine solubility. **High-Yield Clinical Pearls for NEET-PG:** * **Radiopacity:** Calcium and Struvite stones are **Radiopaque** (visible on X-ray). Uric acid stones are **Radiolucent** (invisible on X-ray, seen on CT). Cystine stones are **Semi-opaque** (ground-glass appearance). * **Morphology:** * Calcium Oxalate Dihydrate: Envelope/Star-shaped. * Calcium Oxalate Monohydrate: Dumbbell-shaped. * Struvite: Coffin-lid appearance. * Cystine: Hexagonal crystals. * Uric acid: Rhomboid/Rosette shape. * **Most common stone:** Calcium Oxalate (specifically the Monohydrate form is the hardest).

Question 310: A patient presents with urethral bleeding and perineal swelling following a straddle injury, indicative of a ruptured bulbar urethra. Which of the following statements regarding his management is FALSE?

A. Suprapubic cystostomy may be required.
B. Immediate urethral catheterization is indicated. (Correct Answer)
C. Urethrography is a useful diagnostic tool.
D. Management should be symptomatic and supportive.

Explanation: In a patient with a suspected **straddle injury** and signs of **bulbar urethral rupture** (urethral bleeding, perineal hematoma, or "butterfly" bruising), the primary goal is to avoid converting a partial tear into a complete transection. ### Why Option B is the Correct (False) Statement **Immediate urethral catheterization is contraindicated** in cases of suspected urethral trauma. Blind insertion of a Foley catheter can worsen the injury, introduce infection into the hematoma, or complete a partial tear. A catheter should only be attempted after a **Retrograde Urethrography (RUG)** has confirmed urethral integrity or if a single, gentle attempt by an experienced urologist is deemed necessary. ### Explanation of Other Options * **A. Suprapubic cystostomy (SPC):** This is the preferred method for bladder drainage in acute urethral injuries. It diverts urine away from the site of injury, preventing extravasation and allowing the hematoma to resolve. * **C. Urethrography:** Retrograde Urethrography (RUG) is the **gold standard diagnostic tool** to confirm the site and severity (partial vs. complete) of the urethral tear. * **D. Management should be symptomatic and supportive:** For partial tears, conservative management with urinary diversion (SPC) often allows the urethra to heal spontaneously without immediate surgical reconstruction. ### High-Yield Clinical Pearls for NEET-PG * **Classic Triad of Urethral Injury:** Blood at the external meatus, inability to void, and a palpable distended bladder. * **Anatomical Landmark:** The bulbar urethra is the most common site of injury in **straddle injuries** (crushed against the pubic symphysis), whereas the membranous urethra is typically injured in **pelvic fractures**. * **Buck’s Fascia:** If Buck’s fascia remains intact, the extravasation is confined to the penis. If ruptured, urine/blood tracks into the scrotum and perineum, limited by **Colles' fascia** (Butterfly hematoma).

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Urological Anatomy

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Hematuria Evaluation

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Urinary Calculi

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Benign Prostatic Hyperplasia

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Prostate Cancer

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Bladder Cancer

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Renal Cell Carcinoma

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Testicular Tumors

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Urinary Tract Infections

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Urinary Incontinence

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