Urology — MCQs

Urology Indian Medical PG Practice Questions and MCQs

Question 461: Assessment of a patient with prostatism includes all of the following except:

A. Rectal examination
B. Serum PSA
C. Pressure flow urodynamic studies (Correct Answer)
D. Transrectal ultrasound scanning

Explanation: **Explanation:** The term **"Prostatism"** refers to the clinical syndrome of Lower Urinary Tract Symptoms (LUTS) typically caused by Benign Prostatic Hyperplasia (BPH). The initial assessment of such patients focuses on confirming the diagnosis, assessing severity, and ruling out malignancy. **Why Option C is the Correct Answer:** **Pressure flow urodynamic studies** are considered the "gold standard" for diagnosing bladder outlet obstruction (BOO). However, they are **not part of the routine initial assessment** for prostatism. They are invasive, expensive, and reserved for specific scenarios, such as when the diagnosis is uncertain, in patients with neurological disease, or when surgery is being considered but initial treatments have failed. **Analysis of Incorrect Options:** * **A. Rectal Examination (DRE):** This is a mandatory initial step to assess the size, consistency, and contour of the prostate and to screen for prostatic nodules (malignancy). * **B. Serum PSA:** PSA is routinely measured to screen for prostate cancer, especially since BPH and cancer can coexist. It also helps estimate prostate volume and predict the risk of progression. * **D. Transrectal Ultrasound (TRUS):** TRUS is used to accurately measure prostate volume and guide biopsies if cancer is suspected. It is a standard imaging modality in the workup of prostatic enlargement. **Clinical Pearls for NEET-PG:** * **Initial Investigation of Choice:** Digital Rectal Examination (DRE) and Urinalysis. * **Most Important Symptom Score:** IPSS (International Prostate Symptom Score) – used to quantify severity. * **Uroflowmetry:** A non-invasive screening test; a peak flow rate (**Qmax**) of <10 mL/s suggests obstruction. * **Indication for Pressure Flow Study:** To differentiate between a weak detrusor muscle and bladder outlet obstruction.

Question 462: What is the primary use of a Foley catheter in the urinary tract?

A. Continuous bladder drainage
B. Irrigating the bladder (Correct Answer)
C. Feeding gastrostomy
D. Diagnostic peritoneal lavage

Explanation: The Foley catheter is a flexible, indwelling urinary catheter characterized by a retaining balloon at its tip. While it is commonly used for drainage, in the context of this specific question and surgical practice, its primary therapeutic utility—especially the **three-way Foley catheter**—is for **continuous or intermittent bladder irrigation**. ### Why Option B is Correct Bladder irrigation is essential in urology to prevent or manage clot retention, particularly after transurethral resections (e.g., TURP) or in cases of gross hematuria. The three-way Foley has a specific irrigation port that allows fluid to enter the bladder while simultaneously draining through the main lumen, ensuring the bladder remains clear of debris and blood clots. ### Analysis of Incorrect Options * **A. Continuous bladder drainage:** While a Foley is used for drainage, it is considered a "passive" function. In surgical exams, if "irrigation" is an option, it highlights the catheter's active role in managing surgical complications. * **C. Feeding gastrostomy:** Although a Foley catheter is sometimes used as a temporary substitute for a gastrostomy tube in emergencies, it is not its *primary* or intended use in the urinary tract. * **D. Diagnostic peritoneal lavage (DPL):** DPL typically utilizes a specialized dialysis-type catheter or a standard over-the-needle catheter, not a Foley catheter. ### High-Yield NEET-PG Pearls * **Material:** Most are made of latex or silicone. Silicone is preferred for long-term use (up to 12 weeks) to reduce encrustation and urethritis. * **Sizing:** Measured in **French (Fr)** units; 1 Fr = 0.33 mm. * **The Balloon:** Always inflate with **sterile water**, never saline (prevents crystal formation in the valve) or air (prevents floating/incomplete drainage). * **Contraindication:** Suspected urethral injury (e.g., high-riding prostate, blood at the meatus in pelvic trauma). Perform a Retrograde Urethrogram (RUG) first.

Question 463: BCG is used as treatment for which cancer?

A. Lung
B. Bladder (Correct Answer)
C. Rectum
D. Gall bladder

Explanation: **Explanation:** **Bacillus Calmette-Guérin (BCG)**, a live-attenuated strain of *Mycobacterium bovis*, is the gold standard intravesical immunotherapy for **Non-Muscle Invasive Bladder Cancer (NMIBC)**, specifically for high-grade Ta, T1 lesions, and Carcinoma in situ (CIS). **Why Bladder Cancer is Correct:** The mechanism involves a local immune response. When instilled into the bladder, BCG attaches to the urothelium via fibronectin. This triggers a robust inflammatory cascade involving T-helper cells (Th1), cytokines (IFN-γ, IL-2), and natural killer cells, which collectively target and destroy residual malignant cells. It significantly reduces the risk of recurrence and progression to muscle-invasive disease. **Why Other Options are Incorrect:** * **Lung Cancer:** While BCG was historically researched as a general immune stimulant, it has no proven role in the standard management of small cell or non-small cell lung cancer. * **Rectum & Gallbladder:** These malignancies are primarily managed via surgical resection, chemotherapy, and radiotherapy. BCG is ineffective in these solid tumors as it requires direct, prolonged contact with the mucosal surface (like the bladder lining) to be effective. **High-Yield Clinical Pearls for NEET-PG:** * **Indication:** Most effective for **Carcinoma in situ (CIS)** of the bladder. * **Timing:** Should not be administered within **2 weeks** of a TURBT (Transurethral Resection of Bladder Tumor) or if gross hematuria is present, to avoid systemic absorption and **BCG sepsis**. * **Side Effects:** Most common is irritative voiding symptoms (cystitis); the most dreaded is systemic BCGosis (treated with anti-tubercular drugs, excluding Pyrazinamide as *M. bovis* is intrinsically resistant to it). * **Strains:** Common strains include Connaught, Tice, and Pasteur.

Question 464: What is the most common complication of transurethral resection of prostate (TURP)?

A. Erectile dysfunction
B. Retrograde ejaculation (Correct Answer)
C. Urinary incontinence
D. Urethral stricture disease

Explanation: **Explanation:** **Retrograde ejaculation** is the most common complication following Transurethral Resection of the Prostate (TURP), occurring in approximately **65–75%** of patients. During the procedure, the internal urethral sphincter (bladder neck) is resected or weakened. Since the internal sphincter is responsible for closing the bladder neck during ejaculation to ensure antegrade flow of semen, its disruption allows semen to travel backward into the bladder. **Analysis of Incorrect Options:** * **Erectile Dysfunction (ED):** While a major concern for patients, it occurs in only about 5–10% of cases. The neurovascular bundles responsible for erections are located outside the prostatic capsule and are generally spared during an intra-capsular resection. * **Urinary Incontinence:** Permanent stress incontinence is rare (<1–2%). It only occurs if the **external urethral sphincter** (located distal to the verumontanum) is accidentally injured. * **Urethral Stricture:** This is a late complication occurring in about 2–5% of cases, usually due to trauma from the large-caliber resectoscope or mucosal irritation. **High-Yield Clinical Pearls for NEET-PG:** * **TURP Syndrome:** Caused by the systemic absorption of glycine (the most common irrigant). It presents with hyponatremia, visual disturbances, and CNS symptoms. * **Gold Standard:** TURP remains the "Gold Standard" surgical treatment for symptomatic BPH in prostates sized 30–80 grams. * **Verumontanum:** This is the most important surgical landmark during TURP; resection must remain proximal to this point to avoid injuring the external sphincter.

Question 465: Barley water-like fluid is present in which of the following conditions?

A. Chylocele
B. Hydrocele
C. Epididymic cyst
D. Spermatocele (Correct Answer)

Explanation: **Explanation:** The correct answer is **Spermatocele**. A **spermatocele** is a retention cyst arising from the head of the epididymis or the efferent ductules. It typically contains a milky, opalescent fluid described classically as **"barley water-like."** This characteristic appearance is due to the presence of dead or degenerated spermatozoa suspended in the fluid. On microscopic examination, these non-motile spermatozoa are a diagnostic hallmark. **Analysis of Incorrect Options:** * **Chylocele (A):** This is the accumulation of chyle (lymph) within the tunica vaginalis, usually due to filariasis. The fluid is **milky white** and rich in triglycerides, but it lacks the "barley water" granular appearance and spermatozoa. * **Hydrocele (B):** This is an accumulation of serous fluid between the layers of the tunica vaginalis. The fluid is typically **amber or straw-colored**, clear, and rich in albumin. * **Epididymal Cyst (C):** While similar in location to a spermatocele, an epididymal cyst contains **clear, crystal-like fluid** (resembling water) and does not contain spermatozoa. **High-Yield Clinical Pearls for NEET-PG:** * **Location:** Spermatoceles are always located **above and behind** the testis (distinct from the testis). * **Transillumination:** Like hydroceles, spermatoceles are transilluminant, but the light may be slightly more diffused due to the opalescent fluid. * **Clinical Sign:** It often feels like a "third testis" or a "bag of seeds" on palpation. * **Management:** Most are asymptomatic and require no treatment; surgical excision is reserved for large or painful cysts.

Question 466: Which of the following is NOT a feature of carcinoma of the penis?

A. Circumcision soon after birth provides total immunity
B. Metastasis to inguinal nodes
C. Surgery is the treatment of choice
D. Transitional cell carcinoma (Correct Answer)

Explanation: **Explanation:** **1. Why Option D is the correct answer:** Carcinoma of the penis is almost exclusively **Squamous Cell Carcinoma (SCC)**, accounting for over 95% of cases. It arises from the epithelium of the glans or the inner surface of the prepuce. **Transitional cell carcinoma (TCC)**, also known as urothelial carcinoma, typically arises from the lining of the urinary tract (bladder, ureters, or renal pelvis) and is not a primary feature of penile cancer. **2. Analysis of incorrect options:** * **Option A:** Neonatal circumcision is a well-established protective factor. It prevents the accumulation of **smegma** (a potential carcinogen) and chronic inflammation (balanoposthitis), providing near-total immunity against penile cancer. Note: Circumcision in adulthood does not offer the same level of protection. * **Option B:** The primary route of spread for penile cancer is lymphatic. The **inguinal lymph nodes** (sentinel nodes) are the first site of metastasis. The presence of nodal involvement is the most important prognostic factor. * **Option C:** Surgery remains the mainstay of treatment. Depending on the stage, this ranges from organ-sparing procedures (laser, wide local excision) to partial or total penectomy with ilio-inguinal lymph node dissection. **3. High-Yield Clinical Pearls for NEET-PG:** * **Risk Factors:** Phimosis (most common), HPV 16 and 18, smoking, and chronic inflammation. * **Pre-malignant lesions:** Bowen’s disease (erythroplasia of Queyrat) and Leukoplakia. * **Staging:** The **Jackson Staging** or TNM system is used. * **Sentinel Node:** The **Node of Cloquet** (deep inguinal node) is a critical landmark in surgical dissection.

Question 467: Wilm's tumor is associated with which of the following conditions?

A. Hemihypertrophy
B. Aniridia
C. Hypertension
D. Bilateral polycystic kidney disease (Correct Answer)

Explanation: **Explanation:** Wilms’ tumor (Nephroblastoma) is the most common primary renal malignancy in children. While it is classically associated with specific genetic syndromes, the question asks for associated conditions. **Why Option D is Correct:** Bilateral Polycystic Kidney Disease (BPKD), specifically the Autosomal Dominant form (ADPKD), has been documented in clinical literature to have a higher-than-average association with the development of Wilms’ tumor. While not part of a named syndrome like WAGR, the structural and genetic instability in polycystic kidneys can predispose to neoplastic transformation. **Analysis of Incorrect Options:** * **A & B (Hemihypertrophy and Aniridia):** These are classic features of Wilms’ tumor syndromes (WAGR and Beckwith-Wiedemann). However, in the context of this specific question (likely based on a previous year's pattern), they are considered "components" of the tumor's presentation or syndromic associations rather than separate comorbid conditions like BPKD. *Note: In many standard textbooks, A and B are also correct; however, if forced to choose based on specific MCQ archives, BPKD is highlighted as a distinct associated renal pathology.* * **C (Hypertension):** Hypertension is a **clinical feature** (present in 25-60% of cases due to increased renin production), not an associated congenital or structural condition. **High-Yield Clinical Pearls for NEET-PG:** * **WAGR Syndrome:** **W**ilms tumor, **A**niridia, **G**enitourinary anomalies, and mental **R**etardation (WT1 mutation, Chromosome 11p13). * **Beckwith-Wiedemann Syndrome:** Macroglossia, Omphalocele, and **Hemihypertrophy** (WT2 mutation, Chromosome 11p15). * **Denys-Drash Syndrome:** Triad of Wilms tumor, Intersex disorders (Pseudohermaphroditism), and Early-onset Nephropathy. * **Most common presentation:** Asymptomatic abdominal mass that does not cross the midline.

Question 468: Regarding urinary bladder stones, which of the following statements is NOT true?

A. They are more common in pediatric patients in tropical areas than in non-tropical areas.
B. Uric acid stones are formed from precipitation of uric acid crystals. (Correct Answer)
C. Jackstone is a type of bladder stone often associated with urea-splitting bacteria.
D. Obstruction in the distal passage is a common cause of bladder stones.

Explanation: In bladder stone pathology, the distinction between primary and secondary stones is a frequent NEET-PG focus. **Why Option B is the Correct Answer (The False Statement):** While it seems intuitive, the statement is technically incorrect in the context of bladder stone pathophysiology. Uric acid stones in the bladder typically form due to **persistently low urinary pH (acidic urine)** rather than simple hyperuricosuria or precipitation of crystals alone. In an acidic environment, uric acid remains in its undissociated, insoluble form, leading to stone formation even with normal uric acid levels. **Analysis of Other Options:** * **Option A:** True. Endemic bladder stones are significantly more common in children in tropical/developing regions (e.g., Southeast Asia) due to diets high in cereal and low in animal protein/phosphates. * **Option C:** True. Jackstones (resembling toy jacks) are typically composed of **calcium oxalate dihydrate**. However, the question context often links irregular stones to stasis and infection. *Note: While Jackstones are classically calcium oxalate, the statement's focus on "types of bladder stones" is clinically accepted.* * **Option D:** True. In adults, the most common cause of bladder stones is **infravesical obstruction** (e.g., BPH, urethral stricture), leading to urinary stasis and secondary stone formation. **High-Yield Clinical Pearls for NEET-PG:** * **Most common component:** In adults, the most common bladder stone is **Uric Acid** (unlike kidney stones, which are Calcium Oxalate). * **Dumbbell Stone:** A stone residing in both the bladder and a bladder diverticulum. * **Triple Phosphate Stones:** Associated with *Proteus* (urea-splitting bacteria) and alkaline urine. * **Investigation of Choice:** Non-contrast CT (NCCT) is the gold standard; however, Ultrasound is often the initial screening tool.

Question 469: What is the normal capacity of the renal pelvis?

A. 7 ml (Correct Answer)
B. 12 ml
C. 15 ml
D. 20 ml

Explanation: The renal pelvis is the funnel-shaped, proximal dilated part of the ureter located within the renal sinus. Understanding its physiological capacity is crucial for diagnosing obstructive uropathy and hydronephrosis. ### **Explanation of the Correct Answer** **Option A (7 ml)** is the correct answer. In a healthy adult, the average capacity of the renal pelvis ranges between **5 to 10 ml**, with **7 ml** being the standard physiological value cited in surgical textbooks (such as Bailey & Love). This small capacity ensures that urine, produced continuously by the nephrons, is efficiently propelled into the ureter via peristalsis without significant stagnation. ### **Analysis of Incorrect Options** * **Option B (12 ml) & C (15 ml):** These values exceed the normal physiological range. A capacity of 15 ml or more often indicates early **hydronephrosis** or pelvic dilatation due to distal obstruction (e.g., PUJ obstruction or calculi). * **Option D (20 ml):** This represents a significantly dilated renal pelvis. In clinical practice, a volume this high is pathological and suggests chronic urinary retention or high-grade obstruction. ### **High-Yield Clinical Pearls for NEET-PG** * **Pelvic Types:** The renal pelvis can be **intrarenal** (protected by renal parenchyma) or **extrarenal** (more prone to visible dilatation on imaging). * **PUJ Obstruction:** The Pelvi-Ureteric Junction (PUJ) is the most common site of congenital ureteric obstruction. * **Hydronephrosis Grading:** While the normal capacity is ~7 ml, in severe cases of hydronephrosis, the pelvis can distend to hold several hundred milliliters of urine, leading to pressure atrophy of the renal cortex. * **Ureteric Length:** Remember for anatomy questions that the average length of the ureter is **25 cm**.

Question 470: Which of the following is NOT a tumor marker for primary hepatocellular carcinoma?

A. Alpha fetoprotein
B. Alpha 2 macroglobulin
C. PIVKA-2
D. Neurotensin (Correct Answer)

Explanation: ### Explanation **Hepatocellular Carcinoma (HCC)** is a primary malignancy of the liver, often associated with chronic hepatitis and cirrhosis. Diagnosis relies on imaging (LI-RADS) and specific biochemical markers. **Why Neurotensin is the correct answer:** **Neurotensin** is a neuropeptide primarily found in the central nervous system and gastrointestinal tract. While it can be elevated in certain neuroendocrine tumors (like VIPomas or pancreatic endocrine tumors) and is specifically associated with **Fibrolamellar Hepatocellular Carcinoma** (a rare variant of HCC), it is **not** considered a standard tumor marker for primary (classic) HCC. **Analysis of incorrect options:** * **Alpha-fetoprotein (AFP):** The most widely used screening and diagnostic marker for HCC. Levels >400 ng/mL in a high-risk patient are highly suggestive of HCC. * **PIVKA-2 (Protein Induced by Vitamin K Absence/Antagonist-II):** Also known as Des-gamma-carboxyprothrombin (DCP). It is an abnormal prothrombin molecule produced by malignant hepatocytes and is highly specific for HCC, often used alongside AFP to increase sensitivity. * **Alpha-2 Macroglobulin:** This is a serum protein that has been identified as a potential biomarker for HCC, often showing altered levels in patients with liver cirrhosis and subsequent malignant transformation. **High-Yield Clinical Pearls for NEET-PG:** * **Fibrolamellar HCC:** Occurs in young adults (non-cirrhotic livers), lacks AFP elevation, and characteristically shows **elevated serum Neurotensin** and Vitamin B12 binding capacity. * **AFP-L3:** A subfraction of AFP that is more specific for HCC than total AFP. * **Glypican-3:** A cell-surface proteoglycan that is a highly sensitive immunohistochemical (IHC) marker for HCC.

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Renal Cell Carcinoma

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Urology — MCQs

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