Urology Practice Questions

Q: Bladder outlet obstruction (BOO) is defined by:

Urine flow rate <10 mL/second. **Explanation:** Bladder Outlet Obstruction (BOO) is a clinical diagnosis characterized by the resistance to urine flow during voiding. The gold standard for diagnosing BOO is a **Pressure-Flow Study (Urodynamics)**, which demonstrates high voiding pressures in the presence of low flow rates. **1. Why Option B is Correct:** The hallmark of BOO is a reduced urinary flow rate. In clinical practice and for NEET-PG purposes, a **peak flow rate (Qmax) of 150 mL). A Qmax between 10–15 mL/s is considered equivocal, while >15 mL/s is usually normal. **2. Analysis of Incorrect Options:** * **Option A (PSA-10 mmol):** PSA is a marker for prostatic volume or malignancy, not a functional measure of obstruction. Furthermore, PSA is measured in ng/mL, not mmol. * **Option C (Urine voiding pressure decreased):** This is the most common distractor. In BOO, the detrusor muscle must contract harder to overcome the resistance; therefore, **voiding pressure is increased**, not decreased. A decreased pressure with low flow suggests *detrusor underactivity* (hypocontractility), not obstruction. * **Option D (Retained urine):** While Post-Void Residual (PVR) urine is often present in BOO, it is a *consequence* of the obstruction or bladder failure, not the definition itself. Many patients with BOO can still empty their bladders completely through high-pressure compensation. **High-Yield Clinical Pearls for NEET-PG:** * **Abrams-Griffiths Nomogram:** The graphical tool used to plot voiding pressure vs. flow rate to diagnose BOO. * **Most common cause:** Benign Prostatic Hyperplasia (BPH) in elderly males; Posterior Urethral Valves (PUV) in male infants. * **Urodynamic Triad of BOO:** Low Qmax + High Detrusor Pressure ($P_{det}Q_{max}$) + Delayed opening time.

Q: Urinary catheterization is indicated in cases of acute retention of urine, except in which of the following conditions?

Postoperative state. **Explanation:** The primary goal of urinary catheterization in acute retention of urine (ARU) is to relieve bladder distension. However, the procedure is contraindicated when there is a risk of further injury or when the underlying pathology prevents safe passage of the catheter. **Why "Postoperative state" is the correct answer:** In the postoperative state, acute retention of urine is a common complication (often due to anesthesia, pain, or anticholinergic drugs). In these cases, urinary catheterization is **indicated** and is the standard of care to drain the bladder and prevent myogenic damage. The question asks for the exception; since catheterization *is* indicated here, it stands out against conditions where it is contraindicated. **Analysis of Incorrect Options:** * **Rupture (Urethral):** This is an absolute **contraindication** for urethral catheterization. In cases of suspected urethral injury (e.g., pelvic fracture, blood at the meatus, high-riding prostate), a catheter should never be forced as it can convert a partial tear into a complete rupture. A Suprapubic Cystostomy (SPC) is preferred. * **Stricture:** While not an absolute contraindication, a known urethral stricture makes routine catheterization difficult and potentially hazardous. Forcing a catheter against a stricture can cause "false passages" and bleeding. These cases often require specialized dilation or suprapubic drainage rather than standard catheterization. **Clinical Pearls for NEET-PG:** * **Gold Standard for Urethral Injury:** If urethral rupture is suspected, the first investigation is a **Retrograde Urethrogram (RUG)**. * **Classic Triad of Urethral Injury:** Blood at the external meatus, inability to void, and a palpable distended bladder (often with a high-riding prostate on DRE). * **Management:** In ARU due to stricture or rupture, **Suprapubic Catheterization (SPC)** is the safest alternative to relieve the bladder.

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

Oral sildenafil trial. **Explanation:** The management of erectile dysfunction (ED) follows a stepwise approach. In a 30-year-old patient where the basic screening (history, physical exam, and baseline labs like glucose and testosterone) is unremarkable, the most likely etiology is either psychogenic or early vasculogenic. **1. Why Oral Sildenafil is the correct next step:** Current clinical guidelines (AUA/EAU) recommend a **trial of Oral Phosphodiesterase-5 (PDE5) inhibitors**, such as Sildenafil, as both a first-line treatment and a diagnostic tool. If the patient responds well to Sildenafil, it confirms that the corporal tissue is functional and the blood supply is sufficient, often obviating the need for invasive, expensive, or specialized testing. **2. Why other options are incorrect:** * **Doppler study (Option C):** Penile Duplex Ultrasound is indicated only if the patient fails oral therapy or if there is a history of pelvic trauma/Peyronie’s disease. It is not a first-line investigation. * **Cavernosometry (Option B):** This is a highly invasive procedure used to diagnose venous leak (venous-occlusive dysfunction). It is reserved for surgical candidates and is never a primary step. * **Neurological testing (Option D):** This is indicated only if there is a specific history of spinal cord injury, pelvic surgery, or abnormal findings on neurological examination (e.g., decreased perianal sensation). **Clinical Pearls for NEET-PG:** * **First-line treatment for ED:** Lifestyle modifications + PDE5 inhibitors. * **Mechanism of Sildenafil:** Inhibits PDE5, increasing **cGMP** levels, leading to smooth muscle relaxation and increased blood flow. * **Contraindication:** Never co-administer PDE5 inhibitors with **Nitrates** (risk of severe hypotension). * **Psychogenic ED:** Characterized by sudden onset and the presence of **nocturnal/morning erections**.

Q: Steinstrasse is defined as:

Ureteric obstruction due to stone fragments in the ureter. ### Explanation **Steinstrasse** (German for "Stone Street") is a specific complication that occurs most commonly following **Extracorporeal Shock Wave Lithotripsy (ESWL)** for large renal calculi. **1. Why the Correct Answer is Right:** When a large kidney stone (usually >2 cm) is fragmented by ESWL, the resulting small pieces (gravel) pass into the ureter simultaneously. If these fragments become wedged and accumulate, they form a continuous column of debris that obstructs the ureter. This "street of stones" prevents the normal flow of urine, leading to hydroureteronephrosis and potentially colicky pain or infection. **2. Analysis of Incorrect Options:** * **Option A:** "Staining of stones" is a literal but incorrect interpretation of the prefix "Stein." There is no clinical condition by this name. * **Option B:** "Stones because of stress" is incorrect. While metabolic stress can influence stone formation, Steinstrasse refers to a mechanical arrangement of fragments, not an etiology. * **Option C:** While Steinstrasse is a *complication* of ESWL, it does not define the "failure" of the procedure itself. In many cases, the stone was successfully fragmented; the failure lies in the clearance of those fragments. **3. High-Yield Clinical Pearls for NEET-PG:** * **Incidence:** Most common when treating stones >2 cm without a pre-procedural stent. * **Prevention:** Placement of a **Double-J (DJ) stent** prior to ESWL significantly reduces the risk of Steinstrasse in patients with large stone burdens. * **Management:** * Asymptomatic: Observation (fragments may pass spontaneously). * Symptomatic/Obstructive: Nephrostomy or Ureteroscopy (URS) to clear the "street." * **Imaging:** Classically seen on KUB (Kidney, Ureter, Bladder) X-ray as a linear radio-opaque column in the line of the ureter.

Q: Peyronie's disease affects which organ?

Penis. **Explanation:** **Peyronie’s Disease** is a connective tissue disorder characterized by the formation of fibrous inelastic scar tissue (collagen plaques) within the **Tunica Albuginea** of the **Penis**. This results in a palpable nodule, painful erections, and a characteristic curvature of the penis during erection, which can lead to erectile dysfunction or difficulty with intercourse. **Analysis of Options:** * **Option B (Penis):** This is the correct site. The disease specifically involves the sheath surrounding the corpora cavernosa. * **Option A (Prostate):** Diseases of the prostate typically involve hyperplasia (BPH) or adenocarcinoma, presenting with lower urinary tract symptoms (LUTS), not anatomical curvature. * **Option C (Urinary Bladder):** Bladder pathologies usually involve transitional cell carcinoma or cystitis, affecting storage and voiding. * **Option D (Kidneys):** Renal pathologies involve filtration issues, stones, or tumors (RCC), unrelated to penile fibrous plaques. **High-Yield Clinical Pearls for NEET-PG:** * **Associated Condition:** It is frequently associated with **Dupuytren’s contracture** (fibrosis of the palmar fascia) in about 10-20% of cases. * **Pathophysiology:** Often attributed to repetitive micro-vascular trauma during intercourse in predisposed individuals. * **Clinical Presentation:** Pain, curvature (chordee), and a palpable plaque on the dorsal aspect (most common). * **Management:** * *Medical:* Vitamin E, Potaba, or Intralesional Collagenase (*Clostridium histolyticum*). * *Surgical:* Indicated if the deformity persists >12 months or prevents intercourse. Procedures include **Nesbit’s procedure** (plication of the unaffected side) or plaque excision with grafting.

Q: A 50-year-old male with a positive family history of prostate cancer presents for a screening test. Which is the most sensitive screening test to detect prostate cancer?

Digital Rectal Examination (DRE) + PSA. **Explanation:** The screening for prostate cancer relies on the principle that combining a biochemical marker with a physical examination significantly increases the **sensitivity** and **positive predictive value (PPV)** compared to using either test alone. 1. **Why Option C is Correct:** * **PSA (Prostate-Specific Antigen):** It is a highly sensitive organ-specific marker but lacks specificity for cancer (it can be elevated in BPH or prostatitis). * **DRE (Digital Rectal Examination):** It can detect tumors in the posterior and lateral aspects of the prostate, even when PSA levels are within the normal range (approximately 25% of men with prostate cancer have a PSA <4 ng/mL). * **Synergy:** Combining DRE + PSA is the gold standard for screening because it captures cases that one modality might miss, achieving the highest sensitivity for early detection. 2. **Why Other Options are Incorrect:** * **Option A (DRE alone):** It is subjective and often misses small or non-palpable (T1 stage) tumors. * **Option B (PSA alone):** While more sensitive than DRE, relying solely on PSA misses cancers in patients with low PSA production. * **Option D (MRI):** While Multiparametric MRI (mpMRI) is excellent for localization and staging (PI-RADS scoring), it is not used as a primary screening tool due to high costs and lack of accessibility. **High-Yield Clinical Pearls for NEET-PG:** * **Age to start screening:** Usually 50 years; however, in high-risk patients (positive family history or African American ethnicity), screening should start at **40–45 years**. * **PSA Velocity:** A rise of **>0.75 ng/mL per year** is suspicious, even if the total PSA is 25% suggests BPH. * **Definitive Diagnosis:** Always requires a **TRUS-guided biopsy** (usually 12-core).

Q: A patient presents with complains of sciatica. On radiological examination, there are sclerotic lesions on his skull. Which of the following is most likely to be elevated in this patient?

Prostate specific antigen. **Explanation:** The clinical presentation of **sciatica** (often caused by nerve root compression) combined with **sclerotic (osteoblastic) lesions** on the skull or spine in an elderly male is a classic hallmark of **Metastatic Prostate Cancer**. 1. **Why PSA is correct:** Prostate cancer is the most common malignancy to produce **osteoblastic (bone-forming) metastases**. These lesions appear radiodense or "sclerotic" on X-ray. **Prostate-Specific Antigen (PSA)** is the specific tumor marker used for screening, monitoring, and diagnosing prostate adenocarcinoma. In the context of bony metastasis, PSA levels are typically significantly elevated. 2. **Why other options are incorrect:** * **CEA (Carcinoembryonic Antigen):** Primarily a marker for colorectal carcinoma. While it can be elevated in various cancers, it is not associated with sclerotic bone lesions. * **Alkaline Phosphatase (ALP):** While ALP *would* be elevated in this patient (due to increased osteoblastic activity), the question asks for the "most likely" specific marker. PSA is the definitive marker for the underlying primary malignancy (Prostate CA) causing these specific lesions. (Note: In some exams, if PSA isn't an option, ALP is the next best choice for bone turnover). * **Alpha-1 Antitrypsin:** A protease inhibitor; deficiency leads to emphysema and liver cirrhosis, not sclerotic bone lesions. **Clinical Pearls for NEET-PG:** * **Osteoblastic (Sclerotic) Metastases:** Think Prostate Cancer (Most common), Breast Cancer (can be mixed), or Carcinoid. * **Osteolytic (Lucent) Metastases:** Think Multiple Myeloma, Renal Cell Carcinoma, Lung Cancer, and Thyroid Cancer. * **Acid Phosphatase (Tartrate-resistant):** Historically used for prostate cancer, but now replaced by the more sensitive PSA.

Q: A 20-year-old male presents with a scrotal mass. What is the first investigation to be done?

Clinical evaluation (Palpation and transillumination). **Explanation:** In clinical surgery, the diagnostic sequence always begins with a thorough physical examination. For a scrotal mass, **Clinical Evaluation (Palpation and Transillumination)** is the mandatory first step to differentiate between testicular (solid) and extra-testicular (often cystic) pathologies. * **Why Option A is Correct:** Palpation helps determine if the mass is separate from the testis (like an epididymal cyst) or part of the testis itself (suggestive of malignancy). **Transillumination** is a bedside test that immediately identifies fluid-filled structures like hydroceles. This clinical assessment guides the necessity and urgency of further imaging. * **Why Options B, C, and D are Incorrect:** * **Ultrasound (USG):** While USG is the *investigation of choice* (most accurate) for scrotal masses, it is the *second* step after clinical suspicion is established. * **Biopsy:** This is **strictly contraindicated** in suspected testicular tumors. Scrotal biopsy or aspiration risks "scrotal seeding," where tumor cells spread to the inguinal lymph nodes, altering the lymphatic drainage and worsening the prognosis. * **AFP Level:** This is a tumor marker used for diagnosis and staging of Non-Seminomatous Germ Cell Tumors (NSGCT), but it is performed only after a mass is clinically and radiologically identified. **Clinical Pearls for NEET-PG:** * **Gold Standard/IOC:** Scrotal Ultrasound (High-frequency linear probe). * **Rule of Thumb:** Any firm, non-tender mass within the substance of the testis in a young male is **testicular cancer** until proven otherwise. * **Surgical Approach:** If malignancy is suspected, the definitive procedure is **Radical Inguinal Orchidectomy** (never trans-scrotal).

Q: Whitaker test is done for diagnosing which of the following conditions?

Hydronephrosis. **Explanation:** The **Whitaker test** is a percutaneous pressure-flow study used to differentiate between **obstructive hydronephrosis** and **non-obstructive dilation** (such as a prominent extrarenal pelvis or residual dilation after surgery). **Why Hydronephrosis is Correct:** In cases where imaging (like IVU or Ultrasound) shows a dilated collecting system but cannot definitively confirm a functional obstruction, the Whitaker test provides a definitive diagnosis. It involves placing a needle into the renal pelvis and a catheter into the bladder. Saline is infused into the renal pelvis at a constant rate (10 ml/min). The pressure difference between the renal pelvis and the bladder is measured. A pressure gradient **>22 cm H₂O** confirms a significant mechanical obstruction requiring intervention. **Why Other Options are Incorrect:** * **Renal Carcinoma & Wilms Tumor:** These are solid malignancies. Diagnosis is primarily based on imaging (CT/MRI) and histopathology, not urodynamic pressure studies. * **Renal Tuberculosis:** This is a chronic granulomatous infection. Diagnosis relies on urine microscopy (AFB), culture (Lowenstein-Jensen medium), and imaging showing "putty kidney" or "moth-eaten" calyces. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard:** While the Whitaker test is the "gold standard" for confirming the *presence* of obstruction, it is invasive. * **Non-invasive Alternative:** The **DTPA or MAG3 Diuretic Renogram** (Nuclear scan) is the preferred first-line non-invasive investigation to differentiate obstructive from non-obstructive hydronephrosis. * **Indications:** It is most commonly used today when nuclear scans are equivocal or in patients with significantly impaired renal function where scans are unreliable.

Question 1

Bladder outlet obstruction (BOO) is defined by:

Accepted Answer

Urine flow rate <10 mL/second

Answer

PSA-10 mmol

Answer

Urine voiding pressure decreased

Answer

Retained urine

Question 2

Urinary catheterization is indicated in cases of acute retention of urine, except in which of the following conditions?

Accepted Answer

Postoperative state

Answer

Stricture

Answer

Rupture

Answer

All of the above

Question 3

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

Accepted Answer

Oral sildenafil trial

Answer

Cavernosometry

Answer

Doppler study

Answer

Neurological testing

Question 4

Steinstrasse is defined as:

Accepted Answer

Ureteric obstruction due to stone fragments in the ureter

Answer

Staining of stones

Answer

Stones because of stress

Answer

Failure of extracorporeal shock wave lithotripsy (ESWL)

Question 5

Peyronie's disease affects which organ?

Accepted Answer

Penis

Answer

Prostate

Answer

Urinary bladder

Answer

Kidneys

Question 6

A 50-year-old male with a positive family history of prostate cancer presents for a screening test. Which is the most sensitive screening test to detect prostate cancer?

Accepted Answer

Digital Rectal Examination (DRE) + PSA

Answer

Digital Rectal Examination (DRE)

Answer

Prostate-Specific Antigen (PSA)

Answer

Endorectal Coil MRI with T1W and T2W images

Question 7

A 35-year-old male presents to a health clinic with fever, difficulty in urination, and associated pain in the groin. On digital rectal examination, extreme tenderness is felt on the anterior aspect. Laboratory examination of urine revealed leucocytosis and findings consistent with bacterial infection. What is the most likely diagnosis for this condition?

Accepted Answer

Prostatitis

Answer

Pyelonephritis

Answer

Urinary tract infection

Answer

Benign prostatic hyperplasia

Question 8

A patient presents with complains of sciatica. On radiological examination, there are sclerotic lesions on his skull. Which of the following is most likely to be elevated in this patient?

Accepted Answer

Prostate specific antigen

Answer

CEA

Answer

Alkaline phosphatase

Answer

Alpha 1 antitrypsin

Question 9

A 20-year-old male presents with a scrotal mass. What is the first investigation to be done?

Accepted Answer

Clinical evaluation (Palpation and transillumination)

Answer

Ultrasound (USG)

Answer

Biopsy

Answer

Alpha-fetoprotein (AFP) level

Question 10

Whitaker test is done for diagnosing which of the following conditions?

Accepted Answer

Hydronephrosis

Answer

Renal carcinoma

Answer

Renal tuberculosis

Answer

Wilms tumor

Urology — MCQs

Urology — MCQs

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