Urology Practice Questions

Q: Which of the following statements is true regarding bladder stones?

Treatment involves lithopexy.. Bladder stones (vesical calculi) are a common urological condition, often associated with urinary stasis or infection. **Explanation of the Correct Option:** **Option B (Treatment involves lithopexy)** is the correct statement. **Lithopexy** (or cystolitholapaxy) is the surgical procedure where bladder stones are crushed using a lithotrite (mechanical, ultrasonic, or laser) and then irrigated out. For very large or hard stones, open suprapubic cystolithotomy may be required. **Explanation of Incorrect Options:** * **Option A:** Bladder stones are significantly **more common in boys** than girls. This is primarily due to the longer, narrower male urethra and the higher incidence of posterior urethral valves or bladder outlet obstruction in male children. * **Option C:** While some stones migrate from the kidneys (secondary stones), many bladder stones form **de novo** in the bladder (primary stones) due to stasis (e.g., BPH, neurogenic bladder) or foreign bodies (e.g., indwelling catheters). * **Option D:** Bladder stones are **rarely asymptomatic**. They typically present with the classic triad of frequency, dysuria, and **sudden interruption of the urinary stream** accompanied by referred pain to the tip of the penis (in males) or labia (in females). **High-Yield Clinical Pearls for NEET-PG:** * **Composition:** Most bladder stones are composed of **ammonium uric acid**, calcium oxalate, or magnesium ammonium phosphate (struvite). * **Jackstone Calculus:** A specific type of calcium oxalate dihydrate stone with a "spiky" appearance, often found in the bladder. * **Radiology:** Most bladder stones are radio-opaque; however, pure uric acid stones are radiolucent on X-ray but visible on CT or Ultrasound. * **Associated Risk:** Chronic irritation from long-standing bladder stones is a known risk factor for **Squamous Cell Carcinoma** of the bladder.

Q: Which of the following is NOT a characteristically brilliantly transilluminant swelling?

Lipoma. **Explanation:** The core concept behind **transillumination** is the ability of a swelling to allow light to pass through it. This occurs when the contents are clear, serous fluid and the covering is thin. **Why Lipoma is the Correct Answer:** A **Lipoma** is a benign tumor composed of **adipose (fat) tissue**. Because fat is a solid, opaque substance, it does not allow light to pass through. Therefore, lipomas are characteristically **non-transilluminant**. On clinical examination, they are typically soft, lobulated, and exhibit a "slippery sign." **Analysis of Incorrect Options:** * **Hydrocele:** This is a collection of clear serous fluid between the layers of the tunica vaginalis. It is the classic example of a **brilliantly transilluminant** swelling in the scrotum. * **Meningocele:** This involves the protrusion of meninges containing **Cerebrospinal Fluid (CSF)** through a vertebral defect. Since CSF is a clear fluid, these swellings are transilluminant. * **Cystic Hygroma:** A congenital multilocular lymphatic malformation (usually in the neck) filled with clear lymph. Due to its clear fluid content and thin walls, it is **brilliantly transilluminant**. **NEET-PG High-Yield Pearls:** 1. **Brilliantly Transilluminant Swellings:** Hydrocele, Cystic hygroma, Meningocele, Ranula, and Epididymal cyst. 2. **The "Slippery Sign":** Pathognomonic for Lipoma; the edge of the tumor eludes the finger on pressure. 3. **Differential Diagnosis:** If a scrotal swelling is *not* transilluminant, consider a Hematocele (blood), Pyocele (pus), or Testicular Tumor (solid tissue). 4. **Exception:** A long-standing hydrocele with a thickened, calcified wall may lose its transillumination.

Q: Orchiectomy is not indicated in which of the following conditions?

Tubercular epididymitis. The core principle behind performing an orchiectomy is either the removal of a primary malignancy or the elimination of the primary source of testosterone (androgen ablation) in hormone-dependent cancers. **Why Tubercular Epididymitis is the Correct Answer:** Tubercular epididymitis is a **granulomatous inflammatory condition**, not a neoplastic one. The mainstay of treatment is **Antitubercular Therapy (ATT)**. Surgical intervention is rarely required and is reserved only for complications like cold abscess formation or persistent sinuses. Removing the testis (orchiectomy) is not indicated as the pathology primarily involves the epididymis, and the infection is medically manageable. **Analysis of Incorrect Options:** * **Seminoma Testis:** This is a germ cell tumor. Radical Inguinal Orchiectomy is the **gold standard** treatment and the first step for both diagnosis and local control. * **Prostatic Carcinoma:** Prostate cancer is androgen-dependent. **Bilateral Orchidectomy** (surgical castration) is a standard method of Androgen Deprivation Therapy (ADT) to reduce serum testosterone levels and inhibit tumor growth [1]. * **Male Breast Cancer:** Similar to prostate cancer, many male breast cancers are hormone-receptor positive. Orchiectomy may be used as a palliative hormonal therapy to reduce estrogen/androgen levels that fuel the tumor. **NEET-PG High-Yield Pearls:** * **Radical Inguinal Orchiectomy:** Always performed via an inguinal incision (never scrotal) in suspected testicular tumors to prevent lymphatic spread to scrotal lymph nodes. * **Epididymis vs. Testis:** In TB, the epididymis is affected first (tail > head). In syphilis, the testis is affected first. * **Investigation of Choice:** For TB epididymitis, Ultrasound (USG) shows a heterogeneously hypoechoic enlarged epididymis; definitive diagnosis is via USG-guided FNAC or biopsy.

Q: The prostatic growth in benign prostatic hypertrophy is due to:

Dihydrotestosterone. **Explanation:** The development of Benign Prostatic Hyperplasia (BPH) is an androgen-dependent process. The primary mediator of prostatic growth is **Dihydrotestosterone (DHT)**. Inside the prostate, the enzyme **5-alpha reductase (Type 2)** converts circulating testosterone into DHT. DHT is significantly more potent than testosterone because it has a higher affinity for androgen receptors and forms a more stable receptor-ligand complex. Once bound, it induces the transcription of growth factors (like TGF-β and FGF) that lead to the hyperplasia of stromal and epithelial cells, particularly in the **transition zone** of the prostate. **Analysis of Options:** * **A. Testosterone:** While it is the precursor, testosterone itself does not directly stimulate significant prostatic growth. In men with a genetic deficiency of 5-alpha reductase, the prostate remains small despite normal testosterone levels. * **B & D. 17-estradiol/Oestrogen:** Although estrogen levels increase with age and may sensitize the prostate to DHT by increasing androgen receptor expression, they are not the primary drivers of growth in BPH. **High-Yield Clinical Pearls for NEET-PG:** * **Anatomical Site:** BPH occurs in the **Transition Zone**, whereas Prostate Cancer typically occurs in the **Peripheral Zone**. * **Pharmacology Link:** **Finasteride and Dutasteride** are 5-alpha reductase inhibitors used to treat BPH by lowering intraprostatic DHT levels, effectively shrinking the gland. * **Histology:** BPH is a true hyperplastic process (increase in cell number), not hypertrophy (increase in cell size), despite the name. * **Key Risk Factors:** Aging and the presence of functioning testes (androgens).

Q: In male patients, genital tuberculosis preferentially affects which of the following organs?

Epididymis. **Explanation:** Genital tuberculosis (TB) in males is almost always secondary to a primary focus elsewhere, usually the lungs or the urinary tract (kidneys). **Why Epididymis is the correct answer:** The **epididymis** is the most common site of involvement in male genital TB. The infection typically reaches the epididymis via two routes: 1. **Hematogenous spread:** The most common route, where bacilli lodge in the highly vascular globus minor (tail) of the epididymis. 2. **Retrograde spread:** Infected urine from the prostate or seminal vesicles travels via the vas deferens. Clinically, it presents as a "painless, hard, craggy" swelling. Because the epididymis is the primary site, the infection often spreads to the testis only later in the disease course. **Analysis of Incorrect Options:** * **B. Orchitis (Testis):** Isolated TB orchitis is rare. The testis is usually involved secondary to the epididymis (epididymo-orchitis) because the blood-testis barrier provides some initial protection against hematogenous seeding. * **C. Prostatitis:** While the prostate is frequently involved in the overall complex of urogenital TB, it is rarely the primary or most prominent site of clinical presentation compared to the epididymis. * **D. Penis:** Tuberculosis of the penis is extremely rare and usually occurs due to direct inoculation or as a secondary complication of advanced systemic TB. **High-Yield Clinical Pearls for NEET-PG:** * **Pathognomonic sign:** "Beaded appearance" of the vas deferens due to multiple granulomatous strictures. * **Scrotal Findings:** TB often leads to a "cold abscess" which may rupture to form a **posterior scrotal sinus**. * **Urinary Findings:** Sterile pyuria (pus cells in urine but negative routine culture) is a classic hallmark of renal TB, which often coexists with genital TB. * **Infertility:** Genital TB is a significant cause of obstructive azoospermia in males.

Q: A 58-year-old male presents with acute onset of varicocele on the left side. What is the most probable cause?

Carcinoma of kidney. The correct answer is **Carcinoma of Kidney (Renal Cell Carcinoma - RCC)**. [1] **1. Why Carcinoma of Kidney is correct:** The left testicular vein drains at a right angle into the **left renal vein**, whereas the right testicular vein drains directly into the Inferior Vena Cava (IVC). In cases of Renal Cell Carcinoma, a tumor thrombus can extend into the left renal vein, causing an obstruction to the outflow of the left testicular vein. This leads to venous congestion and the sudden development of a **secondary varicocele**. [1] A key clinical indicator is that a secondary varicocele (unlike primary) typically **does not decompress** when the patient lies supine. [1] **2. Why other options are incorrect:** * **Carcinoma of Testis:** While it may cause a scrotal mass, it does not typically cause a varicocele unless there is extensive retroperitoneal lymphadenopathy obstructing the renal vein, which is less common than direct RCC involvement. * **Epididymitis:** This is an inflammatory condition presenting with pain, fever, and swelling (Prehn’s sign positive), not a varicocele. * **Inguinal Lymphadenopathy:** While it can cause lymphatic obstruction (leading to lymphedema), it does not obstruct the deep venous drainage of the pampiniform plexus required to form a varicocele. **3. High-Yield Clinical Pearls for NEET-PG:** * **Sudden onset varicocele in an elderly patient** is a classic "red flag" for Renal Cell Carcinoma. [1] * **Right-sided varicocele:** If isolated, it is highly suspicious of a retroperitoneal mass or situs inversus, as the right testicular vein usually drains directly into the IVC. * **Primary Varicocele:** Most common on the left side (90%) due to the "Nutcracker effect" (compression of the left renal vein between the SMA and Aorta). * **Investigation of Choice:** Contrast-Enhanced CT (CECT) of the Abdomen to rule out a renal mass.

Q: A 58-year-old male presents with hematuria. He is diagnosed with bladder cancer that extends into the muscle layer. What is the best treatment?

Neoadjuvant chemotherapy followed by radical cystectomy. **Explanation:** The clinical scenario describes **Muscle-Invasive Bladder Cancer (MIBC)**, defined as a tumor invading the detrusor muscle (Stage T2 or higher). **1. Why Option B is Correct:** The gold standard treatment for MIBC is **Radical Cystectomy (RC)** with pelvic lymph node dissection. However, current evidence-based guidelines (NCCN/EAU) strongly recommend **Neoadjuvant Chemotherapy (NAC)**—typically cisplatin-based—prior to surgery. NAC treats micrometastatic disease and has been shown to improve overall 5-year survival by approximately 5-8% compared to surgery alone. **2. Why Other Options are Incorrect:** * **Option A (Intravesical Chemotherapy):** This is indicated for Non-Muscle Invasive Bladder Cancer (NMIBC), specifically low-to-intermediate risk cases (e.g., Stage Ta/T1) to prevent recurrence. It cannot penetrate the muscle layer. * **Option C (Radiotherapy):** While used in "Bladder Preservation Protocols" (Trimodality therapy), it is generally reserved for patients who are unfit for surgery or refuse cystectomy. It is not the primary "best" treatment. * **Option D (Transurethral Resection of Bladder Tumor - TURBT):** TURBT is the initial diagnostic and staging tool. While it can "clear" NMIBC, it is insufficient for MIBC as it cannot ensure complete eradication of deep muscle invasion. **3. High-Yield Clinical Pearls for NEET-PG:** * **Most common histological type:** Transitional Cell Carcinoma (Urothelial Carcinoma). * **Staging:** T2 indicates invasion into the muscularis propria (the "muscle-invasive" threshold). * **Radical Cystectomy Limits:** In males, it involves removal of the bladder, prostate, seminal vesicles, and distal ureters. In females, it includes the bladder, urethra, uterus, ovaries, and anterior vaginal wall. * **Gold Standard for NMIBC (High Risk):** Intravesical BCG (Bacillus Calmette-Guérin).

Q: Which of the following renal stones is purely radiolucent?

Xanthine. **Explanation:** The radiopacity of a renal stone depends on its effective atomic number and density. Stones containing calcium or heavy elements appear radiopaque, while those composed of organic compounds without such elements are radiolucent. **Why Xanthine is Correct:** Xanthine stones are **purely radiolucent**. They occur due to a rare genetic deficiency of the enzyme xanthine oxidase or as a side effect of Allopurinol therapy. Because xanthine is a pure organic compound lacking high-atomic-weight minerals, it does not attenuate X-rays and remains invisible on plain radiographs (KUB). **Analysis of Incorrect Options:** * **Struvite (Magnesium Ammonium Phosphate):** These are **radiopaque**. Often associated with Proteus infections and staghorn calculi, they contain magnesium and phosphate which provide moderate density. * **Cystine:** These are **faintly radiopaque** (often described as "ground-glass" appearance). While organic, they contain sulfur atoms which provide enough density to be visible on X-rays. * **Calcium Oxalate:** These are **highly radiopaque**. As the most common type of renal stone, the high calcium content makes them easily visible on plain films. **High-Yield Clinical Pearls for NEET-PG:** * **Mnemonic for Radiolucent Stones (U.X.):** **U**ric acid and **X**anthine. (Note: Uric acid is the most common radiolucent stone; Xanthine is the rarest). * **Matrix Stones:** These are also radiolucent but rare, typically seen in patients with chronic UTIs. * **Investigation of Choice:** Non-contrast CT (NCCT) is the gold standard for all stones, as even "radiolucent" stones like uric acid and xanthine are visible (hyperdense) on CT. * **Indinavir Stones:** These are the only stones that are truly **radiolucent even on CT scan**.

Q: Which of the following is not a component of the classic triad associated with renal cell carcinoma?

Pyrexia. **Explanation:** The classic clinical triad of **Renal Cell Carcinoma (RCC)**, also known as Guyon’s triad, consists of **Hematuria, Flank Pain, and a Palpable Abdominal Mass**. **Pyrexia (Option D)** is the correct answer because, while it is a common systemic symptom of RCC (occurring in about 20% of cases as a paraneoplastic phenomenon due to IL-6 production), it is **not** part of the "classic triad." **Analysis of Options:** * **Hematuria (Option C):** The most common presenting symptom (approx. 40-50%). It is typically gross, painless, and intermittent. * **Pain (Option B):** Usually described as a dull ache in the flank region, caused by the stretching of the renal capsule. * **Mass (Option A):** A palpable, firm, non-tender mass in the loin. **Clinical Pearls for NEET-PG:** 1. **The "Too Late" Triad:** The classic triad is now seen in only **10% of patients** and usually indicates advanced or metastatic disease. Most RCCs today are detected incidentally via imaging ("incidentalomas"). 2. **Paraneoplastic Syndromes:** RCC is known as the **"Internist's Tumor"** because it produces various hormones. Common findings include erythrocytosis (EPO), hypercalcemia (PTHrP), and hypertension (Renin). 3. **Stauffer’s Syndrome:** Reversible hepatic dysfunction (elevated LFTs) in the absence of liver metastases. 4. **Left-sided Varicocele:** May occur if the tumor obstructs the left gonadal vein entry into the left renal vein.

Question 1

Which of the following statements is true regarding bladder stones?

Accepted Answer

Treatment involves lithopexy.

Answer

More common in girls than boys.

Answer

Always form in the kidneys and pass down to the bladder.

Answer

Usually asymptomatic.

Question 2

Which of the following is NOT a characteristically brilliantly transilluminant swelling?

Accepted Answer

Lipoma

Answer

Hydrocele

Answer

Meningocele

Answer

Cystic hygroma

Question 3

Orchiectomy is not indicated in which of the following conditions?

Accepted Answer

Tubercular epididymitis

Answer

Seminoma testis

Answer

Prostatic carcinoma

Answer

Male breast cancer

Question 4

The prostatic growth in benign prostatic hypertrophy is due to:

Accepted Answer

Dihydrotestosterone

Answer

Testosterone

Answer

17 estradiol

Answer

Oestrogen

Question 5

In male patients, genital tuberculosis preferentially affects which of the following organs?

Accepted Answer

Epididymis

Answer

Orchitis

Answer

Prostatitis

Answer

Penis

Question 6

A 58-year-old male presents with acute onset of varicocele on the left side. What is the most probable cause?

Accepted Answer

Carcinoma of kidney

Answer

Carcinoma of testis

Answer

Epididymitis

Answer

Inguinal lymphadenopathy

Question 7

A 58-year-old male presents with hematuria. He is diagnosed with bladder cancer that extends into the muscle layer. What is the best treatment?

Accepted Answer

Neoadjuvant chemotherapy followed by radical cystectomy

Answer

Intravesical Chemotherapy

Answer

Radiotherapy

Answer

Transurethral resection

Question 8

Which of the following renal stones is purely radiolucent?

Accepted Answer

Xanthine

Answer

Struvite

Answer

Cystine

Answer

Calcium oxalate

Question 9

Which of the following is not a component of the classic triad associated with renal cell carcinoma?

Accepted Answer

Pyrexia

Answer

Mass

Answer

Pain

Answer

Hematuria

Question 10

A 28-year-old white male presents with asymptomatic testicular enlargement. Which of the following statement(s) is/are true concerning his diagnosis and management?

Accepted Answer

The diagnosis of seminoma should be followed by postoperative radiation therapy

Answer

Tumour markers, beta-fetoprotein (AFP) and human chorionic gonadotropin (HCG) will both be of value in the patient regardless of his ultimate tissue type

Answer

Orchiectomy should be performed via a scrotal approach

Answer

With current adjuvant chemotherapy regimens, retroperitoneal lymphadenectomy is no longer indicated for non-seminomatous testicular tumours

Urology — MCQs

Urology — MCQs

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