Urology — MCQs
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A 55-year-old male patient underwent cholecystectomy for gallstone calculus. During surgery, the patient's pulse was irregularly irregular, 160/min, BP = 80/50 mm Hg, temp = 40°C. On examination, a swelling in the neck was found. What is the most likely diagnosis?
In which of the following conditions is neo-adjuvant chemotherapy NOT used?
Percutaneous nephrostomy is indicated in:
Which of the following statements about renal cell carcinoma is false?
A 40-year-old patient with a pelvic injury presents with a 1.5 cm length stricture of the bulbar urethra. What would be the management?
In Winter's classification of impacted teeth, what does the "red line" represent?
What is the treatment of choice for TURP syndrome?
Which germ cell tumor is not seen in males?
Which of the following statements about posterior urethral valves in a neonate is true?
Which of the following is NOT an intravesical chemotherapeutic agent?
Urology Indian Medical PG Practice Questions and MCQs
Question 191: A 55-year-old male patient underwent cholecystectomy for gallstone calculus. During surgery, the patient's pulse was irregularly irregular, 160/min, BP = 80/50 mm Hg, temp = 40°C. On examination, a swelling in the neck was found. What is the most likely diagnosis?
- A. Thyroid storm (Correct Answer)
- B. Myocardial infarction
- C. Arrhythmia
- D. Stridor
Explanation: ### Explanation The clinical presentation describes a classic case of **Thyroid Storm** (Thyrotoxic Crisis), a life-threatening hypermetabolic state. **1. Why Thyroid Storm is the Correct Answer:** Thyroid storm is often precipitated by the stress of surgery (like cholecystectomy) in a patient with unrecognized or poorly controlled hyperthyroidism. The diagnosis is clinical, characterized by the "Triad" seen here: * **Hyperpyrexia:** Temperature of 40°C (104°F) is a hallmark. * **Tachyarrhythmia:** An irregularly irregular pulse at 160/min indicates **Atrial Fibrillation**, the most common arrhythmia in thyrotoxicosis. * **Cardiovascular Collapse:** Hypotension (80/50 mm Hg) indicates high-output heart failure or shock. * **Physical Sign:** The presence of a **neck swelling** (goiter) strongly points toward an underlying thyroid pathology. **2. Why Other Options are Incorrect:** * **Myocardial Infarction (MI):** While MI can cause hypotension and arrhythmias, it does not typically present with extreme hyperpyrexia (40°C) or a neck swelling. * **Arrhythmia:** This is a *finding* (Atrial Fibrillation), not the primary diagnosis. The arrhythmia here is secondary to the thyrotoxic state. * **Stridor:** This is a physical sign of upper airway obstruction (high-pitched sound). While a large goiter can cause stridor, it does not explain the systemic symptoms of fever and tachycardia. **3. NEET-PG High-Yield Pearls:** * **Burch-Wartofsky Point Scale (BWPS):** Used to diagnose thyroid storm clinically (Score >45 is highly suggestive). * **Management (The "P"s):** 1. **P**ropylthiouracil (PTU) – Inhibits hormone synthesis and peripheral T4 to T3 conversion. 2. **P**ropranolol – Controls tachycardia and inhibits T4 to T3 conversion. 3. **P**otassium Iodide (Lugol’s) – Blocks hormone release (give *after* PTU). 4. **P**rednisolone (Steroids) – Treats relative adrenal insufficiency and inhibits T4 to T3 conversion. * **Avoid Aspirin:** It displaces thyroid hormones from binding proteins, worsening the storm. Use Acetaminophen for fever.
Question 192: In which of the following conditions is neo-adjuvant chemotherapy NOT used?
- A. Osteosarcoma
- B. Chest wall PNET
- C. Breast cancer stage 2 (Correct Answer)
- D. Ovarian cancer stage 3
Explanation: **Explanation:** The core concept of **Neoadjuvant Chemotherapy (NACT)** is to administer systemic treatment *before* definitive local therapy (surgery or radiotherapy) to downstage a tumor, improve resectability, and treat micrometastases early. **Why Option C is the correct answer:** In **Breast Cancer Stage 2** (T2N0, T2N1, or T3N0), the standard of care is typically **upfront surgery** (Breast Conserving Surgery or Modified Radical Mastectomy) followed by adjuvant therapy. NACT is generally reserved for Stage 3 (Locally Advanced Breast Cancer - LABC) to shrink large tumors for breast conservation or to make inoperable tumors operable. While NACT *can* be used in Stage 2 for specific subtypes (like Triple Negative or HER2+), it is not the standard requirement compared to the other conditions listed. **Analysis of Incorrect Options:** * **Osteosarcoma (A):** NACT is the gold standard. It facilitates limb-salvage surgery and allows for the assessment of histological response (Huvos grade), which is a major prognostic factor. * **Chest wall PNET/Ewing’s Sarcoma (B):** These are highly chemosensitive but aggressive systemic diseases. NACT is mandatory to shrink the primary mass and address occult metastases before surgical resection. * **Ovarian Cancer Stage 3 (D):** In advanced ovarian cancer where primary cytoreduction (debulking) is not feasible due to extensive peritoneal spread or poor performance status, NACT followed by Interval Debulking Surgery (IDS) is a standard evidence-based approach. **High-Yield Clinical Pearls for NEET-PG:** * **LABC (Stage 3 Breast Cancer):** Always starts with NACT. * **Wilms Tumor:** In the UK/SIOP protocol, NACT is given first; in the US/NWTS protocol, surgery is first. * **Bladder Cancer:** Neoadjuvant Cisplatin-based chemo is preferred for Muscle Invasive Bladder Cancer (T2-T4a) before radical cystectomy. * **Esophageal/Rectal Cancer:** Neoadjuvant **Chemoradiotherapy** is the standard for locally advanced stages.
Question 193: Percutaneous nephrostomy is indicated in:
- A. Polycystic kidney disease
- B. Solitary adenocarcinoma
- C. Simple hydronephrosis
- D. Pyonephrosis (Correct Answer)
Explanation: **Explanation:** Percutaneous Nephrostomy (PCN) is a procedure where a catheter is inserted through the skin into the renal pelvis to provide external drainage of the collecting system. **Why Pyonephrosis is the Correct Answer:** Pyonephrosis is a surgical emergency characterized by the presence of infected, purulent material (pus) under pressure in an obstructed collecting system. If left undrained, it rapidly leads to urosepsis and irreversible renal damage. PCN is the **gold standard emergency treatment** for pyonephrosis as it provides immediate decompression and drainage of the infected focus, stabilizing the patient before definitive management of the underlying obstruction (e.g., stones). **Analysis of Incorrect Options:** * **Polycystic Kidney Disease (PKD):** PCN is not a standard treatment for PKD. Management focuses on blood pressure control and managing complications like cyst hemorrhage or infection. PCN is only used if a specific cyst becomes infected and is refractory to antibiotics, or if there is secondary obstruction. * **Solitary Adenocarcinoma:** Renal Cell Carcinoma (RCC) is managed surgically via partial or radical nephrectomy. PCN is generally avoided in malignant tumors due to the risk of **needle-track seeding**. * **Simple Hydronephrosis:** While PCN can drain hydronephrosis, it is not routinely indicated unless the condition is symptomatic, bilateral (causing azotemia), or associated with infection. Most simple hydronephrosis cases are managed by treating the primary cause (e.g., DJ stenting for stones). **Clinical Pearls for NEET-PG:** * **Most common indication for PCN:** Supravesical obstruction (e.g., ureteric calculi, pelvic malignancies). * **Absolute Contraindication:** Uncorrected coagulopathy. * **Imaging Guidance:** PCN is most commonly performed under **Ultrasonography (USG)** or Fluoroscopy guidance. * **Triad of Pyonephrosis:** Fever, loin pain, and a palpable tender mass.
Question 194: Which of the following statements about renal cell carcinoma is false?
- A. It is radiosensitive. (Correct Answer)
- B. It is also known as Grawitz tumor.
- C. Tumors less than 4 cm are typically treated with partial nephrectomy.
- D. It arises from the proximal convoluted tubule.
Explanation: ### Explanation **Renal Cell Carcinoma (RCC)** is the most common primary renal malignancy in adults. Understanding its biological behavior and management is crucial for NEET-PG. **Why Option A is the Correct Answer (False Statement):** Renal Cell Carcinoma is notoriously **radioresistant**. Conventional external beam radiation therapy has very limited efficacy in treating the primary tumor. While radiotherapy may be used palliatively for painful bone metastases or brain involvement, it is not a primary treatment modality for the tumor itself. **Analysis of Other Options:** * **Option B (Grawitz Tumor):** This is a historical synonym for RCC. It was named after Paul Grawitz, who originally (and incorrectly) proposed that these tumors arose from adrenal rests within the kidney, leading to the term "hypernephroma." * **Option C (Partial Nephrectomy):** Current guidelines recommend **Nephron Sparing Surgery (NSS)** or partial nephrectomy as the gold standard for T1a tumors (size **<4 cm**). It provides oncological outcomes equivalent to radical nephrectomy while preserving renal function. * **Option D (Proximal Convoluted Tubule):** The most common histological subtype, **Clear Cell RCC** (75-80%), originates specifically from the epithelial cells of the **proximal convoluted tubule (PCT)**. (Note: Collecting duct carcinoma is an exception, arising from the distal nephron). **High-Yield Clinical Pearls for NEET-PG:** * **Risk Factors:** Smoking (most significant), obesity, hypertension, and von Hippel-Lindau (VHL) syndrome. * **Classic Triad:** Hematuria, flank pain, and a palpable mass (seen in only 10% of cases, usually indicates advanced disease). * **Paraneoplastic Syndromes:** RCC is the "Internist’s Tumor" because it can secrete EPO (polycythemia), PTHrP (hypercalcemia), and Renin (hypertension). * **Stauffer Syndrome:** Reversible hepatic dysfunction (elevated LFTs) in the absence of liver metastases. * **Metastasis:** Most common site is the **Lung** ("Cannonball" secondaries). It spreads primarily via the hematogenous route (renal vein invasion).
Question 195: A 40-year-old patient with a pelvic injury presents with a 1.5 cm length stricture of the bulbar urethra. What would be the management?
- A. Urethral dilatation
- B. Excision and end-to-end urethroplasty (Correct Answer)
- C. Patch graft urethroplasty
- D. Urethrotomy
Explanation: The management of urethral strictures depends primarily on the **location, length, and etiology** of the stricture. ### **Why Option B is Correct** For **bulbar urethral strictures** that are short (**< 2 cm**), the gold standard treatment is **Excision and Primary End-to-End Urethroplasty (EPA)**. * **The Concept:** The bulbar urethra is mobile and surrounded by the bulbospongiosus muscle, allowing for the mobilization and tension-free anastomosis of the two healthy ends after the fibrotic segment is excised. * **Success Rate:** This procedure has the highest long-term success rate (over 90-95%) for short, traumatic bulbar strictures. ### **Why Other Options are Incorrect** * **A & D (Urethral Dilatation & Urethrotomy):** While Direct Vision Internal Urethrotomy (DVIU) or dilatation can be used for very short (< 1 cm), soft, primary strictures, they have high recurrence rates (up to 50-60%) for traumatic strictures. In a 40-year-old with a 1.5 cm post-traumatic lesion, definitive surgery is preferred. * **C (Patch Graft Urethroplasty):** Substitution urethroplasty (using Buccal Mucosa Grafts) is indicated for **long strictures (> 2 cm)** where an end-to-end anastomosis would cause chordee or excessive tension. ### **Clinical Pearls for NEET-PG** * **Gold Standard for Bulbar Stricture (< 2 cm):** Excision and primary anastomosis (EPA). * **Gold Standard for Bulbar Stricture (> 2 cm):** Substitution urethroplasty (Buccal Mucosa Graft is the preferred material). * **Most common site of traumatic urethral stricture:** Bulbar urethra (due to straddle injury). * **Most common site of post-gonococcal stricture:** Bulbar urethra. * **Initial investigation of choice:** Retrograde Urethrogram (RUG) to define the site and length.
Question 196: In Winter's classification of impacted teeth, what does the "red line" represent?
- A. The depth at which the impacted tooth is located. (Correct Answer)
- B. The angulation of the second molar.
- C. The summit of the alveolar bone covering the impacted tooth.
- D. The relationship of the third molar to the ramus.
Explanation: In the assessment of impacted mandibular third molars, **George Winter’s classification** (specifically the WAR lines) is a fundamental radiographic tool used to predict surgical difficulty. ### **Explanation of the Correct Answer** The **Red Line** represents the **depth of the impacted tooth** within the mandible. It is a vertical line dropped perpendicularly from the "Amber Line" (which represents the alveolar bone crest) to the specific point of application for an elevator on the impacted tooth. * **Clinical Significance:** The longer the red line (measured in millimeters), the deeper the tooth is embedded, indicating a more difficult surgical extraction and the need for more extensive bone removal. ### **Analysis of Incorrect Options** * **Option B:** The angulation of the tooth is determined by the **long axis** of the third molar relative to the second molar (e.g., mesioangular, distoangular), not the red line. * **Option C:** This describes the **Amber Line**, which is drawn from the alveolar crest of the second molar to the external oblique ridge. * **Option D:** This refers to the **Pell and Gregory Classification** (Class I, II, III), which assesses the relationship between the third molar and the anterior border of the ramus. ### **High-Yield NEET-PG Pearls** * **White Line:** Represents the occlusal plane of the erupted mandibular molars. * **Amber Line:** Represents the height of the alveolar bone (bone level). * **Red Line:** Represents the depth of impaction (difficulty level). * **Rule of Thumb:** A red line length of **5mm or more** usually indicates a complex extraction requiring significant guttering of bone.
Question 197: What is the treatment of choice for TURP syndrome?
- A. Normal saline
- B. 1.5% NaCl
- C. Furosemide (Correct Answer)
- D. Thiazides
Explanation: **Explanation:** **TURP Syndrome** is a clinical complication caused by the excessive systemic absorption of non-conductive irrigation fluid (traditionally 1.5% Glycine) through opened prostatic venous sinuses. This leads to **dilutional hyponatremia** and **hypervolemic fluid overload**. **Why Furosemide is the Correct Answer:** The primary goal in managing TURP syndrome is to address the fluid overload and promote the excretion of excess free water. **Furosemide (a loop diuretic)** is the treatment of choice because it rapidly induces diuresis, reducing the intravascular volume and helping to correct the dilutional state. In mild to moderate cases, fluid restriction and Furosemide are often sufficient to allow the body to naturally re-equilibrate sodium levels. **Analysis of Incorrect Options:** * **Normal Saline (0.9% NaCl):** While it contains sodium, it adds to the volume overload, potentially worsening pulmonary edema or congestive heart failure. * **1.5% NaCl:** This is a hypotonic solution relative to the body's needs in this scenario. If sodium replacement is required for severe symptoms (e.g., seizures), **Hypertonic Saline (3% NaCl)** is used, not 1.5%. * **Thiazides:** These are less potent than loop diuretics and can further lower serum sodium levels by inhibiting sodium reabsorption in the distal tubule, making them inappropriate for treating hyponatremia. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Triad:** Hypertension (early), Bradycardia, and Mental status changes (due to cerebral edema). * **Severe Cases:** If sodium levels are <120 mEq/L or the patient has seizures, use **3% Hypertonic Saline** at a slow rate (not exceeding 10–12 mEq/L in 24 hours) to avoid **Central Pontine Myelinolysis**. * **Prevention:** Modern practice uses **Bipolar TURP** with Normal Saline irrigation, which significantly reduces the risk of this syndrome.
Question 198: Which germ cell tumor is not seen in males?
- A. Choriocarcinoma
- B. Seminoma
- C. Sertoli cell tumor (Correct Answer)
- D. Teratoma
Explanation: **Explanation:** The classification of testicular tumors is divided into **Germ Cell Tumors (GCTs)** and **Sex Cord-Stromal Tumors**. 1. **Why Sertoli Cell Tumor is the correct answer:** The question asks which *germ cell tumor* is not seen in males. **Sertoli cell tumors** are derived from the sex cord-stromal cells (the supportive cells of the testis), not from the primordial germ cells. Therefore, while they occur in males, they are classified as **Sex Cord-Stromal Tumors**, making them the outlier in a list of Germ Cell Tumors. 2. **Analysis of Incorrect Options (Germ Cell Tumors):** * **Seminoma (Option B):** The most common pure germ cell tumor in adults (ages 30–40). It is highly radiosensitive and carries a good prognosis. * **Teratoma (Option D):** A germ cell tumor composed of all three germ layers (ectoderm, mesoderm, endoderm). In prepubertal males, they are usually benign; in post-pubertal males, they are considered malignant. * **Choriocarcinoma (Option A):** A highly aggressive non-seminomatous germ cell tumor (NSGCT) characterized by early hematogenous spread and high levels of β-hCG. **High-Yield Clinical Pearls for NEET-PG:** * **Most common testicular tumor:** Seminoma. * **Most common testicular tumor in infants/children:** Yolk Sac Tumor (Endodermal Sinus Tumor); associated with elevated **Alpha-Fetoprotein (AFP)**. * **Reinke Crystals:** Pathognomonic histological finding in **Leydig Cell Tumors** (another type of Sex Cord-Stromal tumor). * **Schiller-Duval Bodies:** Characteristic histological finding in Yolk Sac Tumors. * **AFP is NEVER elevated in pure Seminomas.** If AFP is high, a non-seminomatous component is present.
Question 199: Which of the following statements about posterior urethral valves in a neonate is true?
- A. Bilateral hydronephrosis may be present. (Correct Answer)
- B. Creatinine and urea levels remain normal.
- C. They enlarge and widen the prostatic urethra.
- D. They are more common in girls.
Explanation: **Explanation:** **Posterior Urethral Valves (PUV)** are the most common cause of bladder outlet obstruction in male infants. They consist of abnormal mucosal folds in the distal prostatic urethra that act as a one-way valve, impeding urinary flow. 1. **Why Option A is Correct:** The obstruction at the level of the urethra causes high intravesical pressure, which is transmitted retrogradely to the ureters and kidneys. This leads to **bilateral hydroureteronephrosis** and bladder wall hypertrophy. In severe cases, this pressure causes renal dysplasia and can lead to Potter sequence (due to oligohydramnios). 2. **Why Option B is Incorrect:** Because PUV causes significant bilateral renal obstruction and potential parenchymal damage, **creatinine and urea levels are typically elevated** (azotemia) in the neonatal period. Monitoring the "nadir creatinine" after drainage is a key prognostic indicator. 3. **Why Option C is Incorrect:** While the valves do cause **dilation (ballooning) of the prostatic urethra** proximal to the obstruction, they do not "enlarge" the urethra in a physiological sense; rather, they are the obstructing membranes themselves. 4. **Why Option D is Incorrect:** PUV occurs **exclusively in males**. In females, the embryological equivalent is rare and presents differently. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Presentation:** Poor urinary stream (dribbling), palpable bladder, and bilateral renal masses. * **Gold Standard Investigation:** **Voiding Cystourethrogram (VCUG)** showing a dilated prostatic urethra ("spinning top" appearance) and the valve itself. * **Initial Management:** Catheterization (using a small feeding tube) to decompress the system, followed by **Endoscopic Fulguration** of the valves. * **Key Sign on Ultrasound:** The **"Keyhole Sign"** (dilated bladder and dilated posterior urethra).
Question 200: Which of the following is NOT an intravesical chemotherapeutic agent?
- A. Adriamycin (Correct Answer)
- B. Mitomycin C
- C. BCG
- D. Thiotepa
Explanation: The correct answer is **A. Adriamycin**. ### **Explanation** The question asks to identify which agent is **NOT** typically used for intravesical chemotherapy in the management of Non-Muscle Invasive Bladder Cancer (NMIBC). While **Adriamycin (Doxorubicin)** is a potent systemic chemotherapeutic agent used in various malignancies, it is rarely used intravesically today due to its high molecular weight (leading to poor absorption into the bladder wall) and significant local toxicity (chemical cystitis). In the context of standard NEET-PG curriculum and clinical guidelines (like EAU/AUA), the primary intravesical agents are Mitomycin C, BCG, and Thiotepa. ### **Analysis of Options** * **B. Mitomycin C:** This is the most common **antitumor antibiotic** used for immediate post-operative instillation (within 6 hours) to prevent "seeding" of tumor cells. It inhibits DNA synthesis. * **C. BCG (Bacillus Calmette-Guérin):** This is the "gold standard" **immunotherapy** (not technically a chemical drug, but categorized under intravesical therapy) for high-risk NMIBC and Carcinoma in situ (CIS). It works by inducing a local T-cell mediated immune response. * **D. Thiotepa:** An **alkylating agent** that was historically the first drug used for intravesical therapy. Though less common now due to its risk of systemic absorption and bone marrow suppression (myelosuppression), it remains a recognized intravesical agent. ### **High-Yield Clinical Pearls for NEET-PG** * **Immediate Post-op Instillation:** Mitomycin C is the drug of choice to reduce recurrence rates. * **BCG Contraindications:** Do not give BCG if there is gross hematuria, traumatic catheterization, or if the patient is immunocompromised (risk of BCG-osis/Sepsis). * **Valrubicin:** Currently the only FDA-approved intravesical chemotherapy specifically for BCG-refractory CIS. * **Gemcitabine:** Increasingly used as a modern intravesical alternative with lower toxicity than Mitomycin C.
Practice by Chapter
Urological Anatomy
Practice Questions
Hematuria Evaluation
Practice Questions
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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Genitourinary Trauma
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Pediatric Urology Basics
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