Urology Practice Questions

Q: What is the treatment of 'thimble bladder'?

Ileocystoplasty. **Explanation:** **Thimble bladder** (also known as a systolic bladder) is the end-stage manifestation of **Genitourinary Tuberculosis (GUTB)**. Chronic tuberculous infection leads to extensive transmural fibrosis and scarring of the bladder wall, resulting in a severely reduced capacity (often <50 ml) and high intravesical pressures. 1. **Why Ileocystoplasty is correct:** Once a thimble bladder has formed, the changes are irreversible and anatomical. Medical therapy cannot restore bladder volume. **Augmentation cystoplasty** (specifically **Ileocystoplasty**) is the treatment of choice. It involves using a detubularized segment of the ileum to increase bladder capacity and lower pressure, thereby protecting the upper urinary tract from reflux and renal failure. 2. **Why other options are incorrect:** * **Anti-tubercular treatment (ATT):** While ATT is mandatory to treat active TB, it cannot reverse established fibrosis. In fact, ATT can sometimes worsen the contracture during the healing phase due to further scarring. * **Corticosteroids:** These are used in early-stage GUTB to reduce edema and prevent ureteric strictures, but they have no role in treating a fibrotic, contracted thimble bladder. * **ATT + Steroids:** This combination is used for active inflammation but is ineffective for the end-stage mechanical failure of the bladder. **Clinical Pearls for NEET-PG:** * **Imaging:** On Intravenous Urogram (IVU), a thimble bladder appears as a small, smooth, rounded bladder shadow. * **Prerequisite for Surgery:** Surgery (Ileocystoplasty) should only be performed after the patient has completed at least **4–6 weeks of ATT** to ensure the urine is sterile and to prevent "miliary spread" during surgery. * **Contraindication:** If the bladder capacity is extremely small (<15 ml) or the urethra is involved, a **urinary diversion** (Ileal conduit) may be preferred over augmentation.

Q: A young male presents with abdominal pain. CT scan shows a heterogenous necrotizing mass at the left renal hilum. His AFP or hCG levels are elevated. What is the most likely diagnosis?

Metastatic germ cell tumor. **Explanation:** The presence of a **heterogenous necrotizing mass at the renal hilum (retroperitoneum)** in a young male, associated with elevated serum tumor markers (**AFP or β-hCG**), is a classic presentation of a **Metastatic Germ Cell Tumor (GCT)**. 1. **Why D is correct:** The retroperitoneum is the primary site for lymphatic spread from testicular germ cell tumors. In young men, any retroperitoneal mass should be considered a metastatic GCT until proven otherwise. Elevated **AFP** (Alpha-fetoprotein) is characteristic of Yolk Sac components, while elevated **β-hCG** is seen in Choriocarcinoma or Seminoma (mildly). A "necrotizing" appearance on CT often reflects the rapid growth and central ischemia typical of these aggressive tumors. 2. **Why other options are incorrect:** * **A. Lymphoma:** While common in the retroperitoneum, lymphoma typically presents as "bulky" homogenous lymphadenopathy that encases vessels without causing necrosis. It does **not** elevate AFP or hCG. * **B. Transitional Cell Carcinoma (TCC):** TCC arises from the urothelium (renal pelvis). While it can involve the hilum, it usually presents with hematuria in older patients and does not produce germ cell markers. * **C. Metastatic Melanoma:** Melanoma can metastasize anywhere, but it is not associated with elevated AFP/hCG and is less common than GCT in this demographic and location. **High-Yield Clinical Pearls for NEET-PG:** * **Rule of Thumb:** In a young male with a retroperitoneal mass, always perform a **scrotal examination** and ultrasound to rule out a primary testicular tumor. * **Primary Extragonadal GCT:** Occasionally, GCTs can arise primarily in the retroperitoneum without a testicular primary. * **Markers:** * ↑ AFP: Yolk sac tumor (never in pure seminoma). * ↑ β-hCG: Choriocarcinoma, Seminoma (10-15% of cases). * ↑ LDH: Correlates with tumor burden/bulk.

Q: Prostate cancer typically metastasizes to the vertebrae through which pathway?

Batson's plexus. **Explanation:** **Why Batson’s Plexus is correct:** Prostate cancer has a unique predilection for the axial skeleton (vertebrae, pelvis, and ribs). The primary pathway for this spread is the **Batson’s venous plexus**, a network of **valveless** paravertebral veins. Because these veins lack valves, changes in intra-abdominal pressure (e.g., coughing or straining) can cause retrograde blood flow. This allows malignant cells from the prostatic venous plexus to travel directly to the vertebral venous system, bypassing the systemic circulation (caval system) and the lungs. This explains why bone metastasis often occurs in the absence of lung involvement. **Why other options are incorrect:** * **Direct spread:** While prostate cancer can locally invade the seminal vesicles, bladder neck, or rectum (Denonvilliers' fascia acts as a temporary barrier), it is not the primary mechanism for distant vertebral metastasis. * **Lymphatic spread:** This is the primary route for spread to regional nodes (obturator and internal iliac nodes). While it can lead to systemic disease, it is not the specific pathway responsible for the characteristic vertebral "drop-metastasis" pattern. **Clinical Pearls for NEET-PG:** * **Osteoblastic Lesions:** Prostate cancer is the most common cause of **osteoblastic (bone-forming)** metastases in elderly males. * **PSA & Acid Phosphatase:** Elevated PSA is the most sensitive marker for screening and monitoring, while **Prostatic Acid Phosphatase (PAP)** is historically associated with bony metastasis. * **Most Common Site:** The lumbar spine is the most frequent site of vertebral involvement. * **Imaging:** A **Technetium-99m bone scan** is the most sensitive investigation to detect these metastases.

Q: An 18-year-old boy presents with groin pain for 2 days. On examination, the testis is high-lying and the cremasteric reflex is absent. Elevation of the testis worsens the pain. What is the probable diagnosis?

Right testicular torsion. **Explanation:** The clinical presentation of acute groin pain in an adolescent, combined with specific physical findings, points directly to **Testicular Torsion**. **Why the correct answer is right:** Testicular torsion is a surgical emergency caused by the twisting of the spermatic cord. * **High-lying testis:** The twisting causes shortening of the cord, pulling the testis upward (Angel’s sign). * **Absent Cremasteric Reflex:** This is the most sensitive physical finding for torsion; its presence almost always rules it out. * **Negative Prehn’s Sign:** Elevation of the testis worsens or does not relieve the pain in torsion (Positive Prehn's sign, where pain is relieved, is characteristic of epididymitis). **Why the incorrect options are wrong:** * **Epididymo-orchitis:** Usually presents with fever and pyuria. Crucially, Prehn’s sign is positive (pain relief on elevation) and the cremasteric reflex is typically preserved. * **Strangulated Hernia:** While it causes acute pain, it usually presents with a tense, tender, irreducible swelling in the inguinal canal and features of intestinal obstruction (vomiting, constipation), rather than isolated testicular displacement. * **Inguinal Hernia:** An uncomplicated hernia presents as a reducible swelling with a cough impulse and is generally not associated with acute, severe pain or an absent cremasteric reflex. **NEET-PG High-Yield Pearls:** * **Golden Period:** Detorsion must occur within **6 hours** to ensure a 90-100% salvage rate. * **Bell-Clapper Deformity:** The most common predisposing anatomical factor (high tunica vaginalis attachment). * **Investigation of Choice:** Color Doppler Ultrasound (shows decreased or absent blood flow). * **Management:** Immediate surgical exploration and **bilateral orchidopexy** (fixation), as the anatomical defect is usually bilateral.

Q: What is true about varicocele?

Can cause oligospermia. **Explanation:** A varicocele is the abnormal dilation and tortuosity of the pampiniform plexus of veins within the spermatic cord. It is the most common reversible cause of male infertility. **Why Option B is correct:** Varicoceles lead to **oligospermia** (low sperm count) and decreased sperm motility. The underlying pathophysiology involves the reflux of warm venous blood from the abdomen, which increases the intratesticular temperature. This thermal stress impairs spermatogenesis, as the testes require a temperature approximately 2°C lower than the core body temperature to function optimally. **Analysis of Incorrect Options:** * **Option A:** Varicoceles are significantly **more common on the left side (90%)**. This is due to the left testicular vein being longer, entering the left renal vein at a right angle (increasing hydrostatic pressure), and potentially being compressed between the SMA and Aorta ("Nutcracker effect"). A **solitary right-sided varicocele** is a red flag and necessitates imaging to rule out a retroperitoneal tumor (e.g., RCC). * **Option C:** Varicoceles typically **increase in size/prominence during the Valsalva maneuver** or upon standing, as these actions increase intra-abdominal pressure and venous reflux. * **Option D:** Anatomically, a varicocele is located **superior and posterior** to the testis, often described as a "bag of worms" feeling within the scrotum. **High-Yield Clinical Pearls for NEET-PG:** * **Grading:** Grade I (Palpable only with Valsalva), Grade II (Palpable without Valsalva), Grade III (Visible through scrotal skin). * **Surgical Indications:** Infertility with abnormal semen analysis, testicular atrophy, or severe pain. * **Gold Standard Treatment:** Microsurgical subinguinal varicocelectomy (lowest recurrence and complication rates).

Q: Which of the following is a type of stone seen in urinary tract infections?

Staghorn calculus. **Explanation:** The correct answer is **Staghorn calculus**. These stones are typically composed of **Struvite** (Magnesium Ammonium Phosphate) and are classically associated with chronic urinary tract infections (UTIs) caused by **urease-producing organisms** (e.g., *Proteus mirabilis*, *Klebsiella*, *Pseudomonas*). **Mechanism:** Urease-producing bacteria hydrolyze urea into ammonia, which increases urinary pH (alkaline urine). In this alkaline environment, phosphate solubility decreases, leading to the precipitation of struvite and carbonate apatite crystals. These stones grow rapidly and fill the renal pelvis and calyces, taking on the characteristic "staghorn" shape. **Analysis of Incorrect Options:** * **A. Calcium oxalate:** The most common type of renal stone overall. They are typically associated with metabolic factors (hypercalciuria, hyperoxaluria) rather than infection. * **B. Uric acid stones:** These form in **acidic urine** (pH < 5.5). They are radiolucent on X-ray and are associated with gout or high cell turnover states. * **D. Cysteine stones:** Caused by an autosomal recessive defect in the transport of dibasic amino acids (COLA: Cysteine, Ornithine, Lysine, Arginine). They are "hexagonal" on microscopy and not infection-induced. **High-Yield Clinical Pearls for NEET-PG:** * **Composition:** Struvite stones are also called "Triple Phosphate" stones. * **Microscopy:** They exhibit a characteristic **"Coffin-lid"** appearance. * **Radiology:** While the stone itself is radiopaque, it is less dense than calcium oxalate. * **Treatment:** Complete surgical removal (usually via PCNL) is necessary because the stone acts as a reservoir for bacteria, leading to recurrent sepsis.

Q: Which of the following are risk factors for inguinal hernia?

All of the above. **Explanation:** The development of an inguinal hernia is primarily driven by two mechanisms: **increased intra-abdominal pressure** and **weakness of the abdominal wall musculature/collagen.** 1. **COPD (Chronic Obstructive Pulmonary Disease):** Patients with COPD suffer from a chronic cough. This repetitive, forceful contraction of the abdominal muscles leads to sustained increases in intra-abdominal pressure, which pushes peritoneal contents through weak points like the internal ring or Hesselbach’s triangle. 2. **BPH (Benign Prostatic Hyperplasia):** BPH causes bladder outlet obstruction, forcing the patient to use the **Valsalva maneuver** (straining) to void. This chronic straining significantly raises intra-abdominal pressure, making it a classic risk factor for hernia development in elderly males. 3. **Cigarette Smoking:** Smoking is a systemic risk factor. It contributes in two ways: it induces a chronic cough (increasing pressure) and, more importantly, it alters **collagen metabolism**. Smoking increases elastase activity and decreases protease inhibitors, leading to the degradation of Type I and Type III collagen, which weakens the transversalis fascia. **Clinical Pearls for NEET-PG:** * **Most common type:** Indirect inguinal hernia is the most common type in both males and females. * **The "Gold Standard" Repair:** Lichtenstein tension-free mesh repair. * **Nyhus Classification:** Frequently tested; remember that Type IIIa is a Direct hernia and Type IIIb is an Indirect hernia with a large internal ring (sliding/pantaloon). * **Other Risk Factors:** Ascites, pregnancy, heavy lifting, and previous lower abdominal incisions (incisional hernia).

Question 1

A 60-year-old male presents with cancer of the prostate. The tumor is limited to the capsule and is palpable on per rectal examination. The patient is diagnosed as stage T1b. What is the best treatment?

Accepted Answer

Radical prostatectomy

Answer

Chemotherapy

Answer

Palliative radiotherapy

Answer

Orchidectomy

Question 2

What is the treatment of 'thimble bladder'?

Accepted Answer

Ileocystoplasty

Answer

Anti-tubercular treatment

Answer

Corticosteroids

Answer

Anti-tubercular drugs + steroids

Question 3

A young male presents with abdominal pain. CT scan shows a heterogenous necrotizing mass at the left renal hilum. His AFP or hCG levels are elevated. What is the most likely diagnosis?

Accepted Answer

Metastatic germ cell tumor

Answer

Lymphoma

Answer

Transitional cell carcinoma

Answer

Metastatic melanoma

Question 4

Prostate cancer typically metastasizes to the vertebrae through which pathway?

Accepted Answer

Batson's plexus

Answer

Direct spread

Answer

Lymphatic spread

Answer

All of the above

Question 5

An 18-year-old boy presents with groin pain for 2 days. On examination, the testis is high-lying and the cremasteric reflex is absent. Elevation of the testis worsens the pain. What is the probable diagnosis?

Accepted Answer

Right testicular torsion

Answer

Right strangulated hernia

Answer

Right inguinal hernia

Answer

Right epididymo-orchitis

Question 6

What is true about varicocele?

Accepted Answer

Can cause oligospermia

Answer

More common on the right side

Answer

Has no effect on Valsalva maneuver

Answer

Lies anterior to the testis

Question 7

Which of the following is a type of stone seen in urinary tract infections?

Accepted Answer

Staghorn calculus

Answer

Calcium oxalate

Answer

Uric acid stones

Answer

Cysteine stones

Question 8

Benign prostatic hypertrophy results in obstruction of the urinary tract. The specific condition is associated with enlargement of which part of the prostate?

Accepted Answer

Median lobe

Answer

Entire prostate gland

Answer

Lateral lobes

Answer

Posterior lobes

Question 9

Peyronie's disease is characterized by which of the following?

Accepted Answer

Bowing of the penis during erection due to a fibrous plaque.

Answer

A curved deformity of the penis.

Answer

Ectopic opening of the urethra.

Answer

None of the above.

Question 10

Which of the following are risk factors for inguinal hernia?

Accepted Answer

All of the above

Answer

COPD

Answer

BPH

Answer

Cigarette smoking

Urology — MCQs

Urology — MCQs

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