Urology Practice Questions

Q: Cystoscopic findings in TB bladder are all except?

Whitish efflux from the ureteric holes. Explanation: The correct answer is **C (Whitish efflux from the ureteric holes)**. In Genitourinary Tuberculosis (GUTB), the efflux from the ureteric orifice is typically **clear**, even in the presence of sterile pyuria. This is because the "pus" cells in TB are microscopic and do not cause the thick, milky, or "whitish" discharge seen in acute pyogenic infections. **Analysis of Options:** * **Thimble Bladder (Option A):** This is a classic late-stage finding. Chronic inflammation and healing by fibrosis lead to a severely contracted, small-capacity, thick-walled bladder, often referred to as a "thimble bladder." * **Golf Hole Ureter (Option B):** Fibrosis and shortening of the ureter lead to the retraction of the ureteric orifice. This causes the orifice to become dilated, circular, and fixed, resembling a "golf hole." * **Cobblestone Mucosa (Option C):** Early cystoscopic findings include hyperemic patches and the formation of "tubercles" (small yellowish nodules). As these coalesce or become surrounded by edema and granulation tissue, the bladder mucosa takes on a "cobblestone" appearance. **High-Yield Clinical Pearls for NEET-PG:** * **Sterile Pyuria:** The hallmark of GUTB (pus cells in urine but negative routine bacterial culture). * **Putty Kidney:** Refers to autonephrectomy where the kidney is replaced by caseous, calcified material. * **Beaded Vas:** Granulomatous involvement of the vas deferens. * **Investigation of Choice:** Contrast-Enhanced CT (CECT) Urography is the gold standard for diagnosis and staging.

Q: Which type of kidney stone is most sensitive to extracorporeal shock wave lithotripsy (ESWL)?

Uric acid stone. **Explanation:** The sensitivity of a kidney stone to **Extracorporeal Shock Wave Lithotripsy (ESWL)** is primarily determined by its **Hounsfield Unit (HU)** value on CT scan and its crystalline structure. Stones with lower density and higher fragility fragment more easily. **Why Uric Acid is the Correct Answer:** Uric acid stones are the most "fragile" or sensitive to ESWL. They have a low density (typically <500 HU) and a non-compact crystalline structure, allowing shock waves to propagate through and shatter them effectively. While uric acid stones are often managed medically via urinary alkalinization (dissolution therapy), if ESWL is performed, they fragment with the least amount of energy. **Analysis of Incorrect Options:** * **Calcium Oxalate:** These are the most common stones. **Calcium oxalate dihydrate** stones are relatively sensitive, but **Calcium oxalate monohydrate** stones are very dense (>1000 HU) and notoriously resistant to ESWL. * **Struvite (Triple Phosphate):** These are associated with infections (Proteus). While they are relatively soft, they are often large (Staghorn calculi), making ESWL less effective as a monotherapy due to the high stone burden and risk of "Steinstrasse." * **Cystine Stone:** These are the **most resistant** to ESWL. They have a "waxy" consistency and a dense crystalline lattice that absorbs shock waves rather than fracturing. **NEET-PG High-Yield Pearls:** * **Order of ESWL Sensitivity:** Uric Acid > Calcium Oxalate Dihydrate > Struvite > Calcium Oxalate Monohydrate > Cystine (Least sensitive). * **Size Limit:** ESWL is generally preferred for stones ** 2 cm or lower pole stones >1 cm, PCNL is the gold standard. * **Contraindications for ESWL:** Pregnancy, uncorrected bleeding diathesis, distal obstruction, and uncontrolled UTI. * **Steinstrasse:** A complication of ESWL where fragmented stone gravel blocks the ureter ("stone street").

Q: Which of the following statements about ureteral duplication is false?

It is typically unilateral.. ### Explanation: Ureteral Duplication Ureteral duplication is the most common congenital anomaly of the urinary tract. Understanding its epidemiology and anatomical rules is crucial for NEET-PG. **Why Option D is the Correct (False) Statement:** Ureteral duplication is **more commonly bilateral** than unilateral. While it can occur on one side, clinical studies and radiological findings indicate a higher prevalence of bilateral involvement in affected individuals. Therefore, stating it is "typically unilateral" is factually incorrect. **Analysis of Other Options:** * **Option A (Females affected more commonly):** This is **true**. There is a strong female predilection, with a female-to-male ratio of approximately 2:1. * **Option B (Follows Weigert-Meyer Rule):** This is **true**. In a complete duplication, the **upper pole ureter** opens ectopically (inferior and medial to the normal orifice) and often ends in a **ureterocele**, while the **lower pole ureter** opens orthotopically (superior and lateral) and is prone to **vesicoureteral reflux (VUR)**. * **Option C (Autosomal Dominant Inheritance):** This is **true**. Ureteral duplication often shows a familial pattern, most commonly inherited in an autosomal dominant fashion with incomplete penetrance. ### High-Yield Clinical Pearls for NEET-PG: * **Weigert-Meyer Rule:** Remember "Upper-Ectopic/Ureterocele" and "Lower-Reflux." * **Most common presentation:** Often asymptomatic, but if symptomatic, it presents with recurrent UTIs or urinary incontinence (in females with an ectopic ureter opening distal to the sphincter). * **Diagnosis:** Voiding Cystourethrogram (VCUG) is the gold standard for diagnosing associated VUR, while IVP or MRU can delineate the anatomy.

Q: A patient with Stage II Transitional Cell carcinoma of the bladder presents with hematuria. Which of the following statements regarding the management of her condition is true?

Radical cystectomy is indicated.. ### Explanation **1. Why Radical Cystectomy is the Correct Answer:** Bladder cancer staging is the primary determinant of management. **Stage II (T2)** Transitional Cell Carcinoma (TCC) signifies **Muscle-Invasive Bladder Cancer (MIBC)**, where the tumor has invaded the muscularis propria. For fit patients with MIBC, the gold standard treatment is **Radical Cystectomy** with pelvic lymph node dissection and urinary diversion. This aggressive approach is necessary because muscle invasion significantly increases the risk of lymphatic spread and systemic metastasis. **2. Analysis of Incorrect Options:** * **Option A:** Cystoscopic fulguration or Transurethral Resection of Bladder Tumor (TURBT) is the standard for **Non-Muscle Invasive Bladder Cancer (NMIBC)** (Stages Ta, T1, or CIS). It is insufficient for Stage II as it cannot ensure complete clearance of deep muscle invasion. * **Option C:** **Smoking** is the most significant risk factor for TCC, increasing the risk 3–4 fold. Other risk factors include exposure to aromatic amines (aniline dyes) and Schistosomiasis (associated with Squamous Cell Carcinoma). * **Option D:** Chemotherapy plays a vital role. **Neoadjuvant Chemotherapy (NAC)** (cisplatin-based) followed by radical cystectomy is the current standard of care for Stage II-III disease, as it improves overall survival compared to surgery alone. **3. Clinical Pearls for NEET-PG:** * **Most common symptom:** Painless gross hematuria (found in 85% of cases). * **Standard of Diagnosis:** Cystoscopy with biopsy. * **Radical Cystectomy boundaries:** In males, it includes the bladder, prostate, and seminal vesicles. In females, it includes the bladder, urethra, uterus, ovaries, and anterior vaginal wall. * **BCG Vaccine:** Used intravesically for high-grade NMIBC (Stage T1/CIS) to prevent recurrence, but not for Stage II.

Q: A tumor invades the corpus spongiosum with or without urethral invasion. To which stage of carcinoma of the penis does this finding belong?

T2. This question tests your knowledge of the **AJCC TNM Staging (8th Edition)** for Carcinoma of the Penis, which is a high-yield topic in Urology. ### **Explanation of the Correct Answer (T2)** The staging of penile cancer depends heavily on the depth of invasion into the anatomical compartments of the penis. * **T2 Stage:** Defined as a tumor invading the **corpus spongiosum** (with or without urethral invasion). * **Key Concept:** The corpus spongiosum is the vascular tissue surrounding the urethra. Invasion here is staged lower than invasion into the corpora cavernosa because the spongiosum is anatomically distinct and less deep than the cavernosa. ### **Why Other Options are Incorrect** * **T1:** The tumor invades the subepithelial connective tissue (lamina propria). It is further divided into **T1a** (no lymphovascular invasion, well-differentiated) and **T1b** (lymphovascular invasion present or poorly differentiated). * **T3:** This stage is reserved for tumors invading the **corpus cavernosum** (with or without urethral invasion). This represents deeper structural involvement than T2. * **T4:** The tumor invades adjacent structures such as the scrotum, prostate, or pubic bone. ### **High-Yield Clinical Pearls for NEET-PG** 1. **Urethral Invasion:** Note that urethral invasion can occur in both T2 and T3. The distinguishing factor is whether the **spongiosum (T2)** or the **cavernosum (T3)** is involved. 2. **Most Common Type:** Squamous Cell Carcinoma (SCC) is the most common histological type. 3. **Risk Factors:** Phimosis, chronic inflammation (balanitis), and HPV (Types 16 and 18) are significant risk factors. 4. **Lymphatic Spread:** Penile cancer primarily spreads to the **inguinal lymph nodes**. The "Sentinel Node" (Cabanas' node) is the first site of metastasis.

Q: Which of the following is the hardest type of renal stone?

Calcium Oxalate. **Explanation:** The hardness of a renal stone is clinically significant as it determines the success rate of Extracorporeal Shock Wave Lithotripsy (ESWL). The harder the stone, the more resistant it is to fragmentation. **1. Why Calcium Oxalate is Correct:** Calcium oxalate stones are the most common and the hardest renal stones. Specifically, **Calcium Oxalate Monohydrate (Whewellite)** is the hardest variety, characterized by a dense, crystalline structure that makes it highly resistant to ESWL. While Calcium Oxalate Dihydrate (Weddellite) is slightly softer, the group as a whole remains the most difficult to break. **2. Analysis of Incorrect Options:** * **Struvite (Magnesium Ammonium Phosphate):** These are "triple phosphate" stones associated with proteus infections. They are typically soft, friable, and radiopaque. They often form large staghorn calculi but fragment easily with lithotripsy. * **Xanthine:** These are rare stones caused by a genetic deficiency of xanthine oxidase. They are generally radiolucent and relatively soft compared to calcium-based stones. * **Cystine:** While cystine stones are notoriously difficult to treat because they have a "smooth" surface that reflects shock waves, they are technically less "hard" on the Mohs scale than calcium oxalate monohydrate. They are often described as having a "waxy" consistency. **Clinical Pearls for NEET-PG:** * **Hardest Stone:** Calcium Oxalate Monohydrate. * **Softest Stone:** Uric Acid (also the most common radiolucent stone). * **Most Common Stone:** Calcium Oxalate (overall). * **Stone most resistant to ESWL:** Calcium Oxalate Monohydrate and Cystine. * **HU (Hounsfield Units) on CT:** Stones >1000 HU (like Calcium Oxalate Monohydrate) predict poor ESWL outcomes.

Q: A stone in the male urinary tract causes pain radiating to the medial side of the thigh and perineum. At which location is the stone most likely lodged?

Pelvic brim. **Explanation:** The location of a ureteric stone determines the site of referred pain due to the specific spinal segments involved. **1. Why Pelvic Brim is Correct:** When a stone is lodged at the **pelvic brim** (where the ureter crosses the common or external iliac artery), it irritates the **genitofemoral nerve** (L1, L2). This nerve provides sensory innervation to the **medial side of the thigh** (via the femoral branch) and the **scrotum/perineum** (via the genital branch). Therefore, pain radiating to these specific areas is a classic clinical sign of a stone at the pelvic brim. **2. Why Other Options are Incorrect:** * **Junction of ureter and renal pelvis (UPJ):** Pain typically remains localized to the **loin** (T10-T12) and does not radiate to the thigh. * **Crossing of gonadal vessels:** While this is a potential site of narrowing, it is not a classic anatomical constriction point associated with this specific radiation pattern. * **Intramural opening (UVJ):** This is the narrowest part of the ureter. Stones here typically cause **vesical irritability** (frequency, urgency) and pain radiating to the tip of the penis or labia majora, rather than the medial thigh. **Clinical Pearls for NEET-PG:** * **Three Anatomical Constrictions of the Ureter:** 1. Ureteropelvic junction (narrowest in some texts), 2. Pelvic brim (crossing iliacs), 3. Ureterovesical junction (narrowest point clinically). * **T11-L2:** The general spinal segments for ureteric colic. * **Boas’ Sign:** Hyperesthesia below the right scapula (associated with cholecystitis, not urolithiasis), often confused in exams with referred pain patterns. * **Imaging:** Non-contrast CT (NCCT) KUB is the gold standard for diagnosing ureteric stones.

Question 1

Cystoscopic findings in TB bladder are all except?

Accepted Answer

Whitish efflux from the ureteric holes

Answer

Thimble bladder

Answer

Golf hole ureter

Answer

Cobblestone mucosa

Question 2

Which type of kidney stone is most sensitive to extracorporeal shock wave lithotripsy (ESWL)?

Accepted Answer

Uric acid stone

Answer

Calcium oxalate stone

Answer

Struvite (triple phosphate) stone

Answer

Cystine stone

Question 3

What is the standard treatment for Stage II testicular teratoma?

Accepted Answer

Orchidectomy + Retroperitoneal Lymph Node Dissection (RPLND)

Answer

Orchidectomy + Chemotherapy

Answer

Orchidectomy

Answer

Radiotherapy

Question 4

Which of the following statements about ureteral duplication is false?

Accepted Answer

It is typically unilateral.

Answer

Females are affected more commonly.

Answer

It follows the Weigert-Meyer rule.

Answer

It is inherited in an autosomal dominant pattern.

Question 5

A patient with Stage II Transitional Cell carcinoma of the bladder presents with hematuria. Which of the following statements regarding the management of her condition is true?

Accepted Answer

Radical cystectomy is indicated.

Answer

Cystoscopic fulguration is the standard treatment.

Answer

History of smoking is not a risk factor.

Answer

Chemotherapy has no role in management.

Question 6

What is the commonest cause of an obliterative stricture of the membranous urethra?

Accepted Answer

Road-traffic accident with fracture pelvis and rupture urethra

Answer

Fall-astride injury

Answer

Prolonged catheterization

Answer

Gonococcal infection

Question 7

A tumor invades the corpus spongiosum with or without urethral invasion. To which stage of carcinoma of the penis does this finding belong?

Accepted Answer

T2

Answer

T1

Answer

T3

Answer

T4

Question 8

Which of the following is the hardest type of renal stone?

Accepted Answer

Calcium Oxalate

Answer

Struvite

Answer

Xanthine

Answer

Cysteine

Question 9

A stone in the male urinary tract causes pain radiating to the medial side of the thigh and perineum. At which location is the stone most likely lodged?

Accepted Answer

Pelvic brim

Answer

Intramural opening of the ureter

Answer

Junction of the ureter and renal pelvis

Answer

Crossing of the gonadal vessels and ureter

Question 10

Rupture of membranous urethra is more commonly due to which of the following factors?

Accepted Answer

Fixity of urethra

Answer

Thin supported wall

Answer

Angulation

Answer

Proximity to bladder

Urology — MCQs

Urology — MCQs

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