Urology Practice Questions

Q: A young couple has been unsuccessful in conceiving a child over a 4-month period. The 28-year-old wife has had no abnormalities detected in previous investigations. The husband's semen analysis revealed a low volume and azotemia, with a normal follicle-stimulating hormone (FSH) level. What is the most likely diagnosis?

Congenital absence of the vas deferens. **Explanation:** The clinical presentation of **low semen volume** and **azoospermia** (absence of sperm) in the presence of **normal FSH levels** is a classic indicator of **obstructive azoospermia**. 1. **Why Option B is Correct:** Congenital Bilateral Absence of the Vas Deferens (CBAVD) results in an obstruction where sperm cannot reach the ejaculate. Since the seminal vesicles are often also absent or atrophic in these cases (as they develop from the same Wolffian duct), the semen volume is characteristically low (<1.5 ml) and acidic. FSH levels remain normal because spermatogenesis in the testes is typically preserved; the issue is purely structural/transport-related. 2. **Why Incorrect Options are Wrong:** * **Bilateral Testicular Atrophy:** This would result in primary testicular failure (non-obstructive azoospermia), which is characterized by **elevated FSH levels** due to the loss of negative feedback from inhibin and testosterone. * **Hydrocele:** This is a collection of fluid in the tunica vaginalis. While it causes scrotal swelling, it does not typically cause azoospermia or low semen volume. * **Varicocele:** This is a dilation of the pampiniform plexus. While it is a common cause of male infertility (due to increased scrotal temperature), it usually presents with **oligospermia** (low count) or poor motility, not complete azoospermia with low volume. **Clinical Pearls for NEET-PG:** * **CBAVD Association:** Strongly associated with mutations in the **CFTR gene** (Cystic Fibrosis). Always screen for CFTR mutations in these patients. * **FSH as a Marker:** In male infertility, a normal FSH suggests obstructive azoospermia, while a high FSH suggests primary testicular failure (Sertoli cell dysfunction). * **Fructose Test:** Semen in CBAVD is typically **fructose-negative** because fructose is produced in the seminal vesicles, which are usually absent.

Q: Which of the following features are NOT seen in a case of carcinoma of the penis?

Distant metastasis is common. **Explanation:** **Carcinoma of the penis** is primarily a **Squamous Cell Carcinoma (SCC)**. Understanding its natural history is crucial for NEET-PG. **Why Option D is the correct answer:** Distant metastasis is actually **uncommon** in penile cancer, especially in the early stages. The disease primarily spreads via **lymphatic channels** to the inguinal lymph nodes. When distant metastasis does occur (late stages), it typically involves the lungs, liver, or bones, but this is seen in less than 10% of cases at presentation. **Analysis of other options:** * **Option A (Circumcision is protective):** This is a well-established fact. Neonatal circumcision significantly reduces the risk of penile cancer by preventing **phimosis** and the accumulation of **smegma**, which acts as a chronic irritant and carcinogen. * **Option B (Lesion is painless to begin with):** Most penile cancers present as a painless ulcer or a fungating growth. Pain usually develops only if there is secondary infection or deep invasion into the corpora cavernosa. * **Option C (Commonest site is glans penis):** The glans is the most frequent site of origin (approx. 48%), followed by the prepuce (21%). **Clinical Pearls for NEET-PG:** 1. **Lymphatic Spread:** The first site of spread is the **Inguinal Lymph Nodes** (Horizontal group of superficial nodes). 2. **Sentinel Node:** The **Sentinel node of Cabanas** (located near the superficial epigastric vein) was historically considered the first node involved. 3. **Etiology:** Strongly associated with **HPV types 16 and 18**. 4. **Staging:** The most important prognostic factor is the presence and extent of inguinal lymph node metastasis.

Q: A 33-year-old woman presents with severe right flank pain that started 3 hours ago. The pain occasionally radiates to her right iliac fossa. She also reports nausea and a low-grade fever. What is the most appropriate investigation?

Abdominal ultrasound (US) scan. **Explanation:** The clinical presentation of acute-onset severe flank pain radiating to the iliac fossa (ureteric colic) in a young woman strongly suggests **urolithiasis**. **1. Why Option D is Correct:** In the context of NEET-PG and standard clinical guidelines (like EAU/AUA), **Non-Contrast Computed Tomography (NCCT) KUB** is generally the gold standard for diagnosing renal stones. However, in female patients of reproductive age, **Abdominal Ultrasound (USG)** is the preferred initial investigation to avoid ionizing radiation and to rule out differential diagnoses like ovarian torsion or ectopic pregnancy. USG is highly effective at detecting hydronephrosis (secondary to obstruction) and stones in the pelvic-ureteric or vesico-ureteric junctions. **2. Why Other Options are Incorrect:** * **Abdominal X-ray (KUB):** While useful for follow-up of radiopaque stones, it misses radiolucent stones (uric acid) and small stones obscured by bowel gas. It has low sensitivity for acute diagnosis. * **MRI Scan:** MRI is excellent for soft tissue but poor at visualizing calcified stones. It is reserved only for specific cases, such as pregnant patients where USG is inconclusive. * **Intravenous Urography (IVU):** Historically the gold standard, it is now obsolete in acute settings due to the risk of contrast-induced nephropathy and the time required for the procedure. **Clinical Pearls for NEET-PG:** * **Gold Standard Investigation:** NCCT KUB (highest sensitivity and specificity). * **First-line in Pregnancy/Children:** Ultrasound. * **Most common site of stone impaction:** Vesico-ureteric junction (VUJ) — the narrowest part of the ureter. * **Radiolucent stones on X-ray:** "Pure" Uric acid, Xanthine, and Matrix stones (Mnemonic: **U**n**X**-rayable).

Q: A 30-year-old male presents with pain on the right flank and hematuria. A CECT abdomen reveals a large 8 x 8 cm solid mass in the right kidney and a 3 x 3 cm solid mass occupying the upper pole of the left kidney. What is the most appropriate surgical treatment for this patient?

Right radical nephrectomy and left partial nephrectomy. **Explanation:** The clinical presentation of bilateral renal masses (8 cm on the right and 3 cm on the left) in a young male is highly suggestive of **Bilateral Renal Cell Carcinoma (RCC)**. The primary goal of surgical management in bilateral disease is to achieve oncological clearance while preserving as much renal function as possible to avoid long-term dialysis. 1. **Why Option C is correct:** The standard of care for bilateral synchronous renal tumors is **Nephron-Sparing Surgery (NSS)** whenever feasible. The 8 cm mass on the right is large and likely requires a **Radical Nephrectomy** (removal of the entire kidney). However, the 3 cm mass on the left is small and localized, making it an ideal candidate for **Partial Nephrectomy** (NSS) [1]. This approach ensures the removal of all malignant tissue while preserving the left kidney's functional parenchyma. 2. **Why other options are incorrect:** * **Option A:** Bilateral radical nephrectomy would render the patient anephric, necessitating lifelong dialysis or a transplant, which is avoided if the tumor is resectable via NSS. * **Option B:** Biopsy is generally not indicated if imaging is classic for RCC and surgery is already planned; it does not treat the contralateral mass. * **Option D:** Leaving the 3 cm mass untreated would allow for disease progression and metastasis. **Clinical Pearls for NEET-PG:** * **T1a tumors (<4 cm):** Partial nephrectomy is the gold standard [1]. * **Hereditary Syndromes:** Bilateral or multifocal RCC in a young patient should raise suspicion for **Von Hippel-Ludlau (VHL) syndrome** (associated with *VHL* gene on Chromosome 3p). * **Triad of RCC:** Flank pain, hematuria, and palpable mass (seen in only 10% of cases). * **Investigation of Choice:** Contrast-Enhanced CT (CECT) abdomen.

Q: What is not the management of a 1.6 cm bulbar urethral stricture in a patient with a history of pelvic fracture?

Excision followed by reconstruction using buccal mucosa. ### Explanation The management of urethral strictures depends on the **length, location, and etiology** of the stricture. **1. Why Option D is the Correct Answer (The "Not" Management):** For a short bulbar urethral stricture (** 2 cm**) or complex cases where the ends cannot be mobilized for a tension-free primary anastomosis. Therefore, using a graft for a simple 1.6 cm bulbar stricture is unnecessary and not the standard primary approach. **2. Analysis of Other Options:** * **Options A & B (Dilatation/Internal Urethrotomy):** These are considered first-line "minimally invasive" options for short ( 90% because the bulbar urethra is mobile enough to allow for a tension-free anastomosis after excision of the fibrotic segment. **Clinical Pearls for NEET-PG:** * **Gold Standard for 2 cm Bulbar Stricture:** Substitution Urethroplasty (Buccal Mucosa Graft is the preferred material). * **Most common site of post-traumatic stricture:** Bulbar urethra (due to straddle injury) or Membranous urethra (due to pelvic fracture). * **Investigation of Choice:** Retrograde Urethrogram (RUG) to define the site and length; Voiding Cystourethrogram (VCUG) to see the proximal extent.

Q: What is the differential diagnosis of acute funiculitis with a small inguinal swelling?

Small strangulated inguinal hernia. **Explanation:** The clinical presentation of **acute funiculitis** (inflammation of the spermatic cord) involves a painful, tender, and often swollen spermatic cord within the inguinal canal. A **small strangulated indirect inguinal hernia** is the most critical differential diagnosis because it mimics these features. When a small knuckle of bowel or omentum becomes trapped (strangulated) at the internal ring, it presents as a tense, tender, irreducible swelling in the inguinal region with an absent cough impulse, closely resembling the inflammatory mass of funiculitis. **Why the other options are incorrect:** * **Undescended testes:** While an undescended testis can undergo torsion (causing acute pain), the scrotum would be empty on palpation. In funiculitis, the testis is usually present in the scrotum. * **Acute orchitis:** This primarily involves inflammation of the body of the testis. While the cord may be secondary congested, the maximal tenderness and swelling are located in the scrotum, not as an isolated inguinal swelling. * **Lymphadenitis:** Inguinal lymphadenitis typically presents as multiple, firm, mobile, or matted nodes. While tender, they are usually more superficial and lateral/inferior to the pubic tubercle, unlike the cord structures. **NEET-PG High-Yield Pearls:** * **Prehn’s Sign:** Used to differentiate epididymitis from torsion; elevation of the scrotum relieves pain in epididymitis/funiculitis but worsens it in torsion. * **Clinical Rule:** Any painful, irreducible swelling in the inguinal region must be considered a **strangulated hernia** until proven otherwise, as it is a surgical emergency. * **Funiculitis Etiology:** Most commonly secondary to retrograde spread of infection from the urinary tract (e.g., *Chlamydia* or *E. coli*).

Q: What does 'French' refer to in the context of a Foley's catheter measurement?

Diameter of the catheter. The **French scale** (also known as the Charrière scale, denoted as Fr, F, or Ch) is the standard unit used to measure the size of catheters and other medical tubing. ### Why "Diameter of the catheter" is correct: The French size specifically represents the **outer diameter** of the catheter in millimeters multiplied by 3. * **Formula:** $1 \text{ French (Fr)} = 0.33 \text{ mm}$ or $3 \text{ Fr} = 1 \text{ mm}$ of outer diameter. * Therefore, a 18 Fr Foley catheter has an outer diameter of 6 mm ($18/3 = 6$). This measurement is crucial for clinicians to ensure the instrument fits through the urethral meatus without causing trauma. ### Why the other options are incorrect: * **Outer circumference:** While the French size is numerically equal to the circumference in millimeters (since $C = \pi \times d$, and $\pi \approx 3$), the formal definition of the French unit is based on the **diameter**. * **Inner circumference / Lumen size:** These refer to the internal space of the catheter. The lumen size varies depending on the material (e.g., latex vs. silicone) and the number of channels (two-way vs. three-way), even if the outer French size remains the same. ### High-Yield Clinical Pearls for NEET-PG: 1. **Standard Sizes:** Adult males typically require 16–18 Fr, while females require 14–16 Fr. 2. **Color Coding:** Catheters are color-coded for easy identification (e.g., **14 Fr is Green**, **16 Fr is Orange**, **18 Fr is Red**). 3. **Material:** Silicone catheters have a larger internal lumen compared to latex catheters of the same French size, making them better for long-term drainage. 4. **Coude Tip:** A catheter with a curved tip used specifically for patients with an enlarged prostate (BPH).

Q: What is the most common organic cause of erectile dysfunction?

Atherosclerosis. **Explanation:** **Atherosclerosis** is the most common organic cause of erectile dysfunction (ED). The underlying mechanism is **vasculogenic**; since the penile arteries are small in diameter (1–2 mm), they are often the first to be affected by atherosclerotic plaque formation. This leads to impaired blood flow to the corpora cavernosa, preventing the pressure required for a rigid erection. It is frequently considered a "sentinel symptom" for systemic cardiovascular disease. **Analysis of Incorrect Options:** * **Multiple Sclerosis (B):** This is a neurogenic cause of ED. While common in MS patients, neurogenic causes are statistically less frequent than vasculogenic causes in the general population. * **Penile Fibrosis (C):** This refers to the replacement of smooth muscle with collagen, often due to chronic ischemia or post-priapism. It is a structural cause but not the primary epidemiological driver of ED. * **Peyronie’s Disease (D):** This involves the formation of a fibrous plaque in the tunica albuginea, leading to penile curvature and painful erections. While it causes ED, its prevalence is much lower than systemic atherosclerosis. **Clinical Pearls for NEET-PG:** * **Most common cause of ED overall:** Psychogenic (especially in younger men). * **Most common organic cause:** Vasculogenic (Atherosclerosis/Diabetes Mellitus). * **The "Artery Size Hypothesis":** ED often precedes Coronary Artery Disease (CAD) by 3–5 years because penile arteries are smaller than coronary arteries. * **First-line Investigation:** Detailed history and IIEF-5 (International Index of Erectile Function) questionnaire. * **Gold Standard for Vasculogenic ED:** Duplex Doppler Ultrasound of penile arteries.

Question 1

A young couple has been unsuccessful in conceiving a child over a 4-month period. The 28-year-old wife has had no abnormalities detected in previous investigations. The husband's semen analysis revealed a low volume and azotemia, with a normal follicle-stimulating hormone (FSH) level. What is the most likely diagnosis?

Accepted Answer

Congenital absence of the vas deferens

Answer

Bilateral testicular atrophy

Answer

Hydrocele

Answer

Varicocele

Question 2

Which of the following features are NOT seen in a case of carcinoma of the penis?

Accepted Answer

Distant metastasis is common

Answer

Circumcision is protective

Answer

Lesion is painless to begin with

Answer

Commonest site is glans penis

Question 3

A 33-year-old woman presents with severe right flank pain that started 3 hours ago. The pain occasionally radiates to her right iliac fossa. She also reports nausea and a low-grade fever. What is the most appropriate investigation?

Accepted Answer

Abdominal ultrasound (US) scan

Answer

Abdominal x-ray

Answer

Magnetic resonance imaging (MRI) scan

Answer

Intravenous urography

Question 4

A 30-year-old male presents with pain on the right flank and hematuria. A CECT abdomen reveals a large 8 x 8 cm solid mass in the right kidney and a 3 x 3 cm solid mass occupying the upper pole of the left kidney. What is the most appropriate surgical treatment for this patient?

Accepted Answer

Right radical nephrectomy and left partial nephrectomy

Answer

Bilateral radical nephrectomy

Answer

Right radical nephrectomy and biopsy of the mass from the opposite kidney

Answer

Right radical nephrectomy only

Question 5

What should be offered to a 55-year-old sexually active male with stage T1b prostate cancer?

Accepted Answer

Radical Prostatectomy

Answer

Orchidectomy

Answer

Hormone Ablation

Answer

Transurethral Resection of the Prostate (TURP)

Question 6

What is not the management of a 1.6 cm bulbar urethral stricture in a patient with a history of pelvic fracture?

Accepted Answer

Excision followed by reconstruction using buccal mucosa

Answer

Dilatation with a catheter

Answer

Internal Urethrotomy

Answer

Excision followed by end-to-end urethroplasty

Question 7

A 16-year-old boy presents with acute onset pain in the left testis. Which of the following statements about his management is FALSE?

Accepted Answer

The patient should be prescribed antibiotics and asked to return after a week.

Answer

Color flow Doppler will be very useful in diagnosis.

Answer

Scrotal exploration should be done without delay if Doppler is not available.

Answer

If the left testis is not viable on exploration, the patient should undergo left orchidectomy and right orchidopexy.

Question 8

What is the differential diagnosis of acute funiculitis with a small inguinal swelling?

Accepted Answer

Small strangulated inguinal hernia

Answer

Undescended testes

Answer

Acute orchitis

Answer

Lymphadenitis

Question 9

What does 'French' refer to in the context of a Foley's catheter measurement?

Accepted Answer

Diameter of the catheter

Answer

Outer circumference measurement

Answer

Inner circumference measurement

Answer

Lumen size

Question 10

What is the most common organic cause of erectile dysfunction?

Accepted Answer

Atherosclerosis

Answer

Multiple sclerosis

Answer

Penile fibrosis

Answer

Peyronie's disease

Urology — MCQs

Urology — MCQs

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