Urology Practice Questions

Q: What fluid is typically used during Transurethral Resection of the Prostate (TURP)?

Glycine. **Explanation:** The primary goal of irrigation fluid during **Transurethral Resection of the Prostate (TURP)** is to maintain a clear surgical field by washing away blood and debris while distending the prostatic urethra. **Why Glycine is the Correct Answer:** Glycine (1.5%) is a non-electrolytic, non-hemolytic, and transparent solution. Because TURP involves the use of **monopolar electrocautery**, the irrigation fluid must be **non-conductive**. If a conductive fluid (like Normal Saline) were used, the electrical current would dissipate into the fluid rather than cutting the tissue. Glycine provides excellent visibility and safety for monopolar cautery. **Analysis of Incorrect Options:** * **Normal Saline (NS):** Being an isotonic electrolyte solution, it is highly conductive. It is avoided in conventional monopolar TURP but is the fluid of choice for **Bipolar TURP**, which allows for safer resection and reduces the risk of TURP syndrome. * **Hemaccel:** This is a plasma expander used for volume replacement in shock; it is not used as a surgical irrigant. * **Methylcellulose:** This is a viscoelastic agent used primarily in ophthalmic surgeries (e.g., cataract surgery) to maintain anterior chamber depth, not for urological irrigation. **High-Yield Clinical Pearls for NEET-PG:** * **TURP Syndrome:** Caused by the systemic absorption of large volumes of Glycine. It presents with **dilutional hyponatremia**, confusion, visual disturbances (due to glycine’s role as an inhibitory neurotransmitter in the retina), and fluid overload. * **Ideal Irrigant Properties:** Isotonic, non-conductive, non-hemolytic, and transparent. * **Other Options:** Sorbitol and Mannitol can also be used, but Glycine is the most common. * **Bipolar TURP:** The "Gold Standard" for preventing TURP syndrome because it allows the use of **Normal Saline**.

Q: What is the best treatment modality for squamous cell carcinoma (SCC) of the bladder?

Radical cystectomy. **Explanation:** **Squamous Cell Carcinoma (SCC)** of the bladder is the second most common histological type of bladder cancer globally, though it is highly prevalent in regions where *Schistosoma haematobium* is endemic. Unlike the more common Urothelial (Transitional Cell) Carcinoma, SCC of the bladder is characterized by its aggressive local behavior and poor response to non-surgical treatments. **Why Radical Cystectomy is the Correct Answer:** Radical cystectomy with urinary diversion is the **gold standard and treatment of choice** for SCC of the bladder. This is because SCC typically presents at an advanced stage, is deeply invasive into the bladder wall at the time of diagnosis, and is notoriously **chemoresistant and radioresistant**. Surgical extirpation offers the only realistic chance for long-term survival and local disease control. **Why Other Options are Incorrect:** * **Chemotherapy (A) & Radiotherapy (B):** SCC of the bladder shows a very poor response to standard cisplatin-based chemotherapy and conventional radiation. These are generally reserved for palliative intent or as part of experimental protocols, but they are never the primary treatment of choice. * **TURBT (D):** While TURBT is essential for the initial diagnosis and staging (biopsy), it is insufficient as a definitive treatment for SCC because these tumors are almost always muscle-invasive at presentation. **High-Yield Clinical Pearls for NEET-PG:** * **Risk Factors:** Chronic irritation is the key. Think of **Schistosomiasis** (most common cause worldwide), long-term indwelling catheters, and chronic bladder stones. * **Pathology:** Look for "keratin pearls" and intercellular bridges on histology. * **Prognosis:** Generally poorer than urothelial carcinoma because it is usually diagnosed at a higher stage (T3 or T4). * **Key Association:** In India, non-schistosomal SCC is often associated with chronic cystitis and bladder calculi.

Q: Which of the following is NOT a complication of urethral stricture?

Papilloma of the bladder. **Explanation:** Urethral stricture is a narrowing of the urethra caused by scarring, leading to **bladder outlet obstruction (BOO)**. The complications of stricture arise from chronic high-pressure voiding and urinary stasis. **Why Papilloma of the bladder is the correct answer:** A papilloma is a neoplastic growth (benign tumor). While chronic irritation from stones or infections (common in strictures) can predispose to Squamous Cell Carcinoma, a **Papilloma** is not a direct complication of the mechanical obstruction or the resulting stasis caused by a stricture. **Analysis of Incorrect Options:** * **Periurethral abscess:** High voiding pressure can cause infected urine to extravasate into the periurethral glands or through small mucosal tears, leading to abscess formation and potentially "Watering Can Perineum." * **Inguinal hernia:** To overcome the resistance of the stricture, patients must use the abdominal muscle pump (Valsalva maneuver) to void. This chronic increase in intra-abdominal pressure weakens the inguinal canal, leading to hernias. * **Hydronephrosis:** Chronic obstruction leads to increased intravesical pressure, causing bladder wall hypertrophy, trabeculations, and eventually vesicoureteral reflux or ureteric obstruction, resulting in bilateral hydroureteronephrosis and potential renal failure. **NEET-PG High-Yield Pearls:** * **Most common site:** Bulbar urethra (especially post-inflammatory/gonococcal). * **Most common cause (Overall):** Idiopathic or Iatrogenic (e.g., prolonged catheterization, TURP). * **Gold Standard Investigation:** Retrograde Urethrogram (RGU) to define the site and length; Micturating Cystourethrogram (MCU) to see the proximal extent. * **Watering Can Perineum:** A classic complication where multiple fistulae form in the perineum due to neglected periurethral abscesses.

Q: A 35-year-old male patient presents with colicky abdominal pain and a 3 cm stone in the renal pelvis. There is no hydronephrosis, no distal obstruction, and his renal parameters are normal. What is the management of choice for this patient?

Percutaneous Nephrolithotomy (PCNL). **Explanation:** The management of renal stones is primarily determined by the **size, location, and composition** of the stone. According to current urological guidelines (EAU/AUA), **Percutaneous Nephrolithotomy (PCNL)** is the gold standard and treatment of choice for renal pelvic stones **>2 cm** in diameter. 1. **Why PCNL is correct:** For a 3 cm stone, PCNL offers the highest stone-free rate (SFR) in a single session. Large stones have a high stone burden that exceeds the effective clearance capacity of less invasive methods. 2. **Why other options are incorrect:** * **ESWL:** Generally reserved for stones **<2 cm**. For a 3 cm stone, ESWL has a high failure rate, often requires multiple sessions, and carries a significant risk of *Steinstrasse* (stone street), where fragmented debris obstructs the ureter. * **Open Pyelolithotomy:** This is a highly invasive surgical procedure. It is now reserved only for complex cases where minimally invasive techniques (PCNL/RIRS) have failed or are anatomically impossible. * **Dissolution therapy:** This is only effective for **Uric Acid stones**. Most renal stones are Calcium Oxalate (radio-opaque), and a 3 cm stone requires active surgical intervention rather than medical management alone. **High-Yield Clinical Pearls for NEET-PG:** * **Stone 1 cm favor PCNL/RIRS). * **Stone >2 cm:** PCNL is the treatment of choice. * **Staghorn Calculi:** PCNL is the primary management strategy.

Q: What is an indication for surgery in benign prostatic hyperplasia?

Post-void residual urine volume of 200 ml. In Benign Prostatic Hyperplasia (BPH), the decision for surgical intervention (typically TURP) is based on the presence of **absolute** or **relative indications** that signify bladder decompensation or complications. ### **Explanation of the Correct Option** **A. Post-void residual (PVR) urine volume of 200 ml:** A high PVR volume is a sign of chronic urinary retention and bladder outlet obstruction. While there is no universal cutoff, a PVR **>100–200 ml** is generally considered a relative indication for surgery. It suggests that the bladder musculature (detrusor) is failing to overcome the urethral resistance, increasing the risk of urinary tract infections (UTIs) and bladder stones. ### **Explanation of Incorrect Options** * **B & C (Weakened stream and Dysuria):** These are **Lower Urinary Tract Symptoms (LUTS)**. While bothersome, they are subjective and initially managed with medical therapy (Alpha-blockers or 5-Alpha-reductase inhibitors). Surgery is only considered if these symptoms are refractory to medical treatment. * **D (Residual urine <100 ml):** This is often considered within an acceptable range for elderly patients or those with mild BPH and does not warrant surgical intervention. ### **High-Yield Clinical Pearls for NEET-PG** * **Absolute Indications for Surgery (VOIDC):** 1. **V**esical Calculi (Bladder stones) 2. **O**utflow obstruction causing Renal Failure (Hydronephrosis/Azotemia) 3. **I**ntractable Gross Hematuria 4. **D**ecompensated Bladder (Recurrent UTIs) 5. **C**omplete Urinary Retention (Failure of at least one catheter trial) * **Gold Standard Investigation:** Uroflowmetry (Qmax 80–100g, Open Prostatectomy or HoLEP is preferred.

Q: Which of the following is NOT true about struvite stones?

Usually seen in acidic urine. **Explanation:** Struvite stones are primarily associated with **alkaline urine**, not acidic urine. This is the fundamental pathophysiological concept tested here. **1. Why Option D is the Correct Answer (The False Statement):** Struvite stones form only when the urinary pH is high (**pH > 7.2**). They are caused by urea-splitting organisms (e.g., *Proteus mirabilis*, *Klebsiella*) that produce the enzyme **urease**. Urease hydrolyzes urea into ammonia and carbon dioxide. The ammonia then increases the hydroxyl ion concentration, making the urine alkaline. This alkalinity reduces the solubility of magnesium ammonium phosphate, leading to stone precipitation. **2. Analysis of Other Options:** * **Option A (Staghorn Calculus):** Because these stones form in the presence of infection and can grow rapidly, they often fill the entire renal pelvis and branched calyces, taking the shape of a deer's horn (Staghorn). * **Option B (Triple Phosphate):** Chemically, struvite is **Magnesium Ammonium Phosphate (MAP)**. It is called "triple phosphate" because it historically referred to the combination of magnesium, ammonium, and phosphate ions. * **Option C (Infected Urine):** These are classic "infection stones." Without the presence of urease-producing bacteria, the specific alkaline environment required for struvite formation does not occur. **High-Yield Clinical Pearls for NEET-PG:** * **Microscopy:** Characterized by **"Coffin-lid"** shaped crystals. * **Radiology:** They are **Radio-opaque** (though less dense than calcium oxalate). * **Gender Predilection:** More common in **females** due to the higher incidence of Urinary Tract Infections (UTIs). * **Treatment:** Complete surgical removal (often via PCNL) is necessary because the stone itself acts as a reservoir for bacteria, leading to recurrent infections.

Q: A 30-year-old male presents to the OPD with erectile dysfunction. Basic screening evaluation is unremarkable. What is the next step in the evaluation or management?

Oral sildenafil citrate trial. **Explanation:** The management of Erectile Dysfunction (ED) follows a stepwise approach. In a young patient with an unremarkable basic screening (history, physical exam, and basic labs like glucose and lipid profile), the **first-line management** is the administration of **Oral Phosphodiesterase-5 (PDE-5) inhibitors**, such as Sildenafil. **Why Option A is correct:** Current clinical guidelines (AUA/EAU) recommend a trial of PDE-5 inhibitors as both a therapeutic step and a diagnostic indicator. If the patient responds well, further invasive testing is unnecessary. Since the basic evaluation is unremarkable, the most likely etiology is either psychogenic or early vasculogenic, both of which typically respond to oral therapy. **Why other options are incorrect:** * **Options B & C (Cavernosonometry & Doppler):** These are specialized vascular studies. Duplex Doppler is used to assess arterial inflow, while Cavernosonometry/Cavernosography evaluates venous leak. These are **second-line investigations** reserved for patients who fail oral therapy or those being considered for vascular surgery. * **Option D (Neurological testing):** This is only indicated if the initial history or physical examination (e.g., bulbocavernosus reflex, sensory loss) suggests a neurological deficit (e.g., post-pelvic surgery or spinal cord injury). **High-Yield Clinical Pearls for NEET-PG:** 1. **First-line treatment for ED:** Lifestyle modifications + Oral PDE-5 inhibitors. 2. **Mechanism of Sildenafil:** Inhibits PDE-5, increasing **cGMP** levels, leading to smooth muscle relaxation and increased blood flow. 3. **Contraindication:** Never co-administer PDE-5 inhibitors with **Nitrates** (leads to severe hypotension). 4. **Most common cause of ED:** Historically thought to be psychogenic, but now recognized as **vasculogenic** (often an early marker of Coronary Artery Disease).

Q: What is the most important diagnostic investigation for renal cell carcinoma?

CT scan of abdomen and pelvis. **Explanation:** The gold standard and most important diagnostic investigation for Renal Cell Carcinoma (RCC) is a **Contrast-Enhanced CT (CECT) scan of the abdomen and pelvis**. **1. Why CT Scan is the Correct Answer:** A CECT is the primary modality for diagnosis, staging, and surgical planning. It provides critical information regarding: * **Tumor Characteristics:** RCC typically shows significant enhancement (wash-in) during the arterial phase followed by washout. * **Staging:** It accurately assesses local extension, lymph node involvement, and the presence of venous thrombus in the renal vein or Inferior Vena Cava (IVC). * **Anatomy:** It helps in planning a partial vs. radical nephrectomy by mapping the vascular anatomy. **2. Why Other Options are Incorrect:** * **USG (Ultrasound):** Usually the **initial** investigation or screening tool for incidental findings, but it lacks the sensitivity and detail required for definitive staging and surgical planning. * **MRI:** Reserved for specific cases, such as patients with contrast allergies, renal failure, or when there is a need to better define the extent of a thrombus in the IVC. It is not the first-line "most important" test. * **PET CT:** Not routinely used for the primary diagnosis of RCC as many renal tumors are not FDG-avid. Its role is limited to detecting distant metastases or monitoring recurrence. **Clinical Pearls for NEET-PG:** * **Triad of RCC:** Hematuria, flank pain, and palpable mass (seen in <10% of cases; signifies advanced disease). * **Most common histological type:** Clear cell carcinoma (originates from Proximal Convoluted Tubule). * **Staging:** Robson’s classification (historical) and TNM staging (current). * **Paraneoplastic syndromes:** RCC is known as the "Internist's tumor" due to associations with polycythemia (EPO), hypercalcemia (PTHrP), and Stauffer’s syndrome (non-metastatic hepatic dysfunction).

Q: A 50-year-old female presents with abdominal pain and anuria. Radiological studies reveal bilateral impacted ureteric stones with hydronephrosis. Urine analysis shows RBCs and pus cells. Serum creatinine is 16 mg/dL and blood urea is 200 mmol/L. What should be the immediate treatment?

J stent drainage. **Explanation:** The patient presents with **obstructive uropathy** leading to acute renal failure (Creatinine 16 mg/dL, Urea 200 mmol/L) and potential sepsis (pus cells in urine). In cases of bilateral ureteric obstruction with azotemia, the immediate priority is **decompression of the collecting system** to restore renal function and prevent permanent nephron damage. **1. Why C is correct:** **Double J (DJ) stenting** or Percutaneous Nephrostomy (PCN) are the gold-standard emergency treatments for obstructive uropathy. Stenting bypasses the obstruction, allows infected urine to drain, and stabilizes the patient’s renal parameters. Once the creatinine levels normalize and the infection is controlled, definitive stone management can be planned. **2. Why other options are incorrect:** * **A & B (Lithotripsy/URS):** These are definitive treatments for stones. However, they are **contraindicated** in the acute phase of obstruction with renal failure and infection. Performing these procedures on an unstable, uremic patient significantly increases the risk of urosepsis and surgical complications. * **D (Hemodialysis):** While the creatinine is very high, the underlying cause is **post-renal (obstructive)**. Dialysis may temporarily lower toxins but does not address the mechanical obstruction. Decompression (DJ stent) often leads to a rapid decline in creatinine, potentially making dialysis unnecessary. **Clinical Pearls for NEET-PG:** * **Emergency Urology Triad:** Fever + Flank Pain + High Creatinine = Surgical Emergency (Needs immediate drainage). * **Choice of Drainage:** DJ stent is preferred if the patient is stable; PCN is preferred if the patient is in septic shock or if stenting fails. * **Post-obstructive Diuresis:** After relief of bilateral obstruction, monitor the patient for massive diuresis and electrolyte imbalances.

Q: What is the most common type of renal stone?

Calcium oxalate. **Explanation:** **Calcium oxalate** is the most common type of renal stone worldwide, accounting for approximately **75–80%** of all urinary calculi. These stones typically form in acidic or neutral urine. They are radiopaque (visible on X-ray) and are further classified into two types: Calcium oxalate monohydrate (Whewellite), which are hard and dumbbell-shaped, and Calcium oxalate dihydrate (Weddellite), which are envelope-shaped. **Analysis of Incorrect Options:** * **Triple phosphate & Struvite stones (Options B & C):** These terms are often used interchangeably. Struvite stones (Magnesium Ammonium Phosphate) account for about 10–15% of cases. They are "infection stones" associated with urea-splitting organisms like *Proteus* and *Klebsiella* and often form large **Staghorn calculi** in alkaline urine. * **Urate stones (Option D):** Uric acid stones account for about 5–10% of stones. They are unique because they are **radiolucent** (not seen on X-ray) but visible on CT scans. They form in persistently acidic urine and are associated with gout or high cell turnover. **High-Yield Clinical Pearls for NEET-PG:** * **Most common constituent:** Calcium oxalate (specifically Monohydrate is more common than Dihydrate). * **Most common cause of Calcium stones:** Idiopathic hypercalciuria (not hyperparathyroidism). * **Appearance on Microscopy:** * Calcium oxalate dihydrate: **Envelope/Pyramid** shape. * Calcium oxalate monohydrate: **Dumbbell/Oval** shape. * Struvite: **Coffin-lid** appearance. * Cystine: **Hexagonal** (associated with "benzene ring" shape). * **Investigation of Choice:** Non-Contrast Enhanced CT (NCCT) KUB is the gold standard for all renal stones.

Question 1

What fluid is typically used during Transurethral Resection of the Prostate (TURP)?

Accepted Answer

Glycine

Answer

Normal Saline (NS)

Answer

Hemaccel

Answer

Methylcellulose

Question 2

What is the best treatment modality for squamous cell carcinoma (SCC) of the bladder?

Accepted Answer

Radical cystectomy

Answer

Chemotherapy

Answer

Radiotherapy

Answer

Transurethral resection of bladder tumor (TURBT)

Question 3

Which of the following is NOT a complication of urethral stricture?

Accepted Answer

Papilloma of the bladder

Answer

Periurethral abscess

Answer

Inguinal hernia

Answer

Hydronephrosis

Question 4

A 35-year-old male patient presents with colicky abdominal pain and a 3 cm stone in the renal pelvis. There is no hydronephrosis, no distal obstruction, and his renal parameters are normal. What is the management of choice for this patient?

Accepted Answer

Percutaneous Nephrolithotomy (PCNL)

Answer

Extracorporeal Shock Wave Lithotripsy (ESWL)

Answer

Open pyelolithotomy

Answer

Dissolution with oral potassium solution

Question 5

What is an indication for surgery in benign prostatic hyperplasia?

Accepted Answer

Post-void residual urine volume of 200 ml

Answer

Weakened urinary stream

Answer

Dysuria

Answer

Residual urine volume less than 100 ml

Question 6

Which of the following is NOT true about struvite stones?

Accepted Answer

Usually seen in acidic urine

Answer

Also known as staghorn calculus

Answer

These are triple phosphate stones

Answer

Common in infected urine

Question 7

A 30-year-old male presents to the OPD with erectile dysfunction. Basic screening evaluation is unremarkable. What is the next step in the evaluation or management?

Accepted Answer

Oral sildenafil citrate trial

Answer

Cavernosonometry

Answer

Doppler study

Answer

Neurological testing

Question 8

What is the most important diagnostic investigation for renal cell carcinoma?

Accepted Answer

CT scan of abdomen and pelvis

Answer

MRI

Answer

USG

Answer

PET CT

Question 9

A 50-year-old female presents with abdominal pain and anuria. Radiological studies reveal bilateral impacted ureteric stones with hydronephrosis. Urine analysis shows RBCs and pus cells. Serum creatinine is 16 mg/dL and blood urea is 200 mmol/L. What should be the immediate treatment?

Accepted Answer

J stent drainage

Answer

Lithotripsy

Answer

Ureteroscopic removal of stones

Answer

Hemodialysis

Question 10

What is the most common type of renal stone?

Accepted Answer

Calcium oxalate

Answer

Triple phosphate

Answer

Struvite stone

Answer

Urate stone

Urology — MCQs

Urology — MCQs

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