Urology — MCQs

Urology Indian Medical PG Practice Questions and MCQs

Question 721: What fluid is typically used during Transurethral Resection of the Prostate (TURP)?

A. Normal Saline (NS)
B. Glycine (Correct Answer)
C. Hemaccel
D. Methylcellulose

Explanation: **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**.

Question 722: What is the best treatment modality for squamous cell carcinoma (SCC) of the bladder?

A. Chemotherapy
B. Radiotherapy
C. Radical cystectomy (Correct Answer)
D. Transurethral resection of bladder tumor (TURBT)

Explanation: **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.

Question 723: Which of the following is NOT true about extraperitoneal urinary bladder rupture?

A. It is often associated with pelvic fracture.
B. It is more common than intraperitoneal bladder rupture.
C. It is commonly associated with posterior urethral rupture. (Correct Answer)
D. It can sometimes be managed conservatively without surgical intervention.

Explanation: ### Explanation **1. Why Option C is the Correct Answer (The False Statement)** While both extraperitoneal bladder rupture and posterior urethral injuries are frequently associated with pelvic fractures, they are **not commonly associated with each other** in the same patient. Statistically, only about 10–15% of patients with a pelvic fracture-related bladder injury will have a concomitant urethral injury. Therefore, stating they are "commonly associated" is clinically inaccurate for exam purposes. **2. Analysis of Incorrect Options (True Statements)** * **Option A:** Pelvic fractures are the leading cause of extraperitoneal rupture. The mechanism usually involves direct bony spicules piercing the bladder or the "burst effect" from pelvic ring distortion. * **Option B:** Extraperitoneal rupture is the most common type of bladder injury, accounting for approximately **60–65%** of cases, whereas intraperitoneal rupture accounts for about 25–30%. * **Option D:** Unlike intraperitoneal ruptures (which require mandatory surgery), uncomplicated extraperitoneal ruptures can often be managed **conservatively** with large-bore foley catheter drainage for 10–14 days, provided the urine is clear and there are no associated injuries requiring exploration. **3. High-Yield Clinical Pearls for NEET-PG** * **Gold Standard Investigation:** Retrograde Cystography (showing "sunburst" or "flame-shaped" contrast extravasation in extraperitoneal types). * **Intraperitoneal Rupture:** Usually occurs due to a blow to a **full bladder**; contrast outlines bowel loops on imaging. Requires immediate surgical repair. * **Molar Tooth Sign:** Seen on CT cystography in extraperitoneal rupture, where contrast tracks into the prevesical space (Space of Retzius). * **Triad of Bladder Rupture:** Gross hematuria, suprapubic pain, and difficulty voiding in the setting of trauma.

Question 724: Barrett's esophagus is commonly associated with which of the following malignancies?

A. Adenocarcinoma (Correct Answer)
B. Squamous cell carcinoma
C. Sarcoma
D. Gastrointestinal stromal tumor

Explanation: **Explanation:** **Barrett’s Esophagus (BE)** is a premalignant condition resulting from chronic Gastroesophageal Reflux Disease (GERD). The underlying pathophysiology involves **intestinal metaplasia**, where the normal stratified squamous epithelium of the lower esophagus is replaced by simple columnar epithelium with goblet cells. This metaplastic change is a defensive response to chronic acid exposure but significantly increases the risk of genetic mutations leading to the **Adenocarcinoma** sequence. * **Why Adenocarcinoma is correct:** The transformation follows the Metaplasia → Dysplasia → Adenocarcinoma sequence. Since the metaplastic tissue is glandular (columnar) in nature, the resulting malignancy is an adenocarcinoma, typically involving the distal third of the esophagus. * **Why other options are incorrect:** * **Squamous cell carcinoma (SCC):** This arises from the native squamous lining. Major risk factors include smoking and alcohol, not BE. * **Sarcoma & GIST:** These are mesenchymal tumors arising from the connective tissue or interstitial cells of Cajal in the esophageal wall, respectively. They are not related to epithelial metaplasia. **High-Yield Clinical Pearls for NEET-PG:** 1. **Diagnosis:** Gold standard is Endoscopy + Biopsy showing **Goblet cells**. 2. **Prague Criteria:** Used to grade the extent of BE (C = Circumferential, M = Maximal length). 3. **Surveillance:** Patients with BE require regular endoscopic surveillance. If high-grade dysplasia is found, endoscopic mucosal resection (EMR) or radiofrequency ablation (RFA) is indicated. 4. **Location:** Adenocarcinoma (Distal 1/3rd); SCC (Middle 1/3rd).

Question 725: Which of the following is NOT a complication of urethral stricture?

A. Periurethral abscess
B. Inguinal hernia
C. Hydronephrosis
D. Papilloma of the bladder (Correct Answer)

Explanation: **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.

Question 726: Ormond's disease is defined as:

A. Idiopathic lymphadenopathy
B. Retractile testis
C. Idiopathic retroperitoneal fibrosis (Correct Answer)
D. Idiopathic mediastinitis

Explanation: **Explanation:** **Ormond’s disease** is the eponym for **idiopathic retroperitoneal fibrosis (RPF)**. It is a rare condition characterized by the proliferation of dense fibrous tissue in the retroperitoneum, which typically encases and compresses the ureters, great vessels (Aorta and IVC), and nerves. 1. **Why Option C is correct:** In approximately 70% of RPF cases, no specific cause is found, hence the term "idiopathic" or Ormond’s disease. It is currently considered part of the **IgG4-related systemic diseases**. The fibrosis typically starts at the level of the aortic bifurcation and spreads superiorly, characteristically pulling the ureters medially (**medial deviation of ureters**). 2. **Why other options are incorrect:** * **Option A:** Idiopathic lymphadenopathy refers to conditions like Castleman disease, not Ormond’s. * **Option B:** Retractile testis is a physiological variant where a hyperactive cremasteric reflex pulls the testis into the inguinal canal; it is unrelated to retroperitoneal pathology. * **Option C:** While idiopathic mediastinitis (fibrosing mediastinitis) shares a similar histopathological profile with RPF, it is a distinct clinical entity involving the thoracic cavity. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Triad on IVP:** Hydronephrosis, medial deviation of the middle third of the ureters, and extrinsic ureteral compression. * **Diagnosis:** Contrast-enhanced CT/MRI is the investigation of choice. Biopsy is required to rule out malignancy. * **Management:** Medical management involves **Corticosteroids** (first-line) or immunosuppressants (Tamoxifen, Azathioprine). Surgical intervention (Ureterolysis with Omental wrapping) is reserved for refractory cases or severe obstruction. * **Associated Drugs:** Methysergide (classic association), Beta-blockers, and Hydralazine.

Question 727: 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?

A. Extracorporeal Shock Wave Lithotripsy (ESWL)
B. Percutaneous Nephrolithotomy (PCNL) (Correct Answer)
C. Open pyelolithotomy
D. Dissolution with oral potassium solution

Explanation: **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:** ESWL or RIRS (Retrograde Intrarenal Surgery) are preferred. * **Stone 1–2 cm:** ESWL, RIRS, or PCNL can be considered based on stone density (Hounsfield units) and location (Lower pole stones >1 cm favor PCNL/RIRS). * **Stone >2 cm:** PCNL is the treatment of choice. * **Staghorn Calculi:** PCNL is the primary management strategy.

Question 728: What is an indication for surgery in benign prostatic hyperplasia?

A. Post-void residual urine volume of 200 ml (Correct Answer)
B. Weakened urinary stream
C. Dysuria
D. Residual urine volume less than 100 ml

Explanation: 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 <10 ml/s suggests obstruction). * **Gold Standard Surgery:** Transurethral Resection of the Prostate (TURP). For glands >80–100g, Open Prostatectomy or HoLEP is preferred.

Question 729: Which of the following is NOT true about struvite stones?

A. Also known as staghorn calculus
B. These are triple phosphate stones
C. Common in infected urine
D. Usually seen in acidic urine (Correct Answer)

Explanation: **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.

Question 730: 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?

A. Oral sildenafil citrate trial (Correct Answer)
B. Cavernosonometry
C. Doppler study
D. Neurological testing

Explanation: **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).

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Urinary Calculi

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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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Urology — MCQs

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