Urology Practice Questions

Q: A palpable plaque with a curved penis is indicative of which condition?

Peyronie disease. **Explanation:** The clinical presentation of a **palpable plaque** associated with a **curved penis** (especially during erection) is the classic hallmark of **Peyronie’s Disease**. **1. Why Peyronie’s Disease is correct:** Peyronie’s disease is a connective tissue disorder involving the development of fibrous scar tissue (collagen plaques) within the **tunica albuginea** of the penis. Because this scarred area is inelastic, it does not expand during tumescence, causing the penis to bend toward the side of the plaque. It is often associated with painful erections and erectile dysfunction. **2. Why the other options are incorrect:** * **Condylomata (Genital Warts):** These are caused by HPV (Types 6 and 11) and present as soft, cauliflower-like fleshy growths on the skin or mucous membranes. They do not involve the tunica albuginea or cause penile curvature. * **Penile Cancer:** Typically presents as a painless, indurated ulcer or a fungating mass, usually on the glans or prepuce. While it involves a mass, it does not typically present as a discrete fibrous plaque causing curvature. * **Hypospadias:** This is a congenital anomaly where the urethral meatus is on the ventral aspect of the penis. While it can be associated with "chordee" (ventral curvature), it is present from birth and does not feature a palpable acquired plaque. **Clinical Pearls for NEET-PG:** * **Association:** Peyronie’s disease is strongly associated with **Dupuytren’s contracture** (palmar fascia fibrosis). * **Site:** The dorsal surface is the most common site for plaques, leading to upward curvature. * **Management:** Medical management includes Vitamin E, Potaba, or intralesional Collagenase (*Clostridium histolyticum*). Surgery (e.g., Nesbit procedure) is reserved for stable, severe cases interfering with intercourse.

Q: Circumcision is included in the management of carcinoma of the penis at which anatomical location?

Prepuce. **Explanation:** The management of penile carcinoma is primarily determined by the anatomical location and the stage of the tumor. **Why Option B is Correct:** When a carcinoma is localized strictly to the **prepuce (foreskin)**, the standard surgical treatment is **radical circumcision**. This procedure ensures the complete removal of the primary lesion with adequate oncological margins while preserving the glans and the shaft of the penis. It is considered definitive treatment for Stage Tis, Ta, and T1a lesions, provided they are confined to the prepuce. **Why Other Options are Incorrect:** * **A. Glans:** Tumors of the glans usually require more extensive procedures such as glansectomy or partial penectomy to ensure clear margins, as circumcision does not remove the glans tissue. * **C. Glanduloprepucial fold:** Lesions involving the sulcus or the fold often involve both the glans and the prepuce. Simple circumcision is insufficient here; a partial penectomy is typically required to achieve a 1–2 cm margin. * **D. Shaft of penis:** Carcinoma of the shaft necessitates a partial or total penectomy depending on the depth of invasion and the ability to maintain a functional stump for micturition. **Clinical Pearls for NEET-PG:** * **Risk Factor:** Phimosis is the most significant risk factor for penile cancer (due to chronic inflammation/smegma). Neonatal circumcision is protective. * **Most Common Histology:** Squamous Cell Carcinoma (SCC) is the most common type (>95%). * **Lymph Node Spread:** Penile cancer spreads primarily via the lymphatics to the **Inguinal Lymph Nodes** (Sentinel node: Sentinel node of Cabanas). * **Surgical Margin:** Modern guidelines suggest that a **3–5 mm** surgical margin is often sufficient for low-grade lesions, though traditionally 1–2 cm was taught.

Q: Which of the following procedures uses a trans-vesical approach in the surgical removal of prostate?

Freyer prostatectomy. **Explanation:** The surgical management of Benign Prostatic Hyperplasia (BPH) involves different approaches depending on the size of the gland and the route taken to reach the prostate. **Why Freyer Prostatectomy is correct:** **Freyer’s procedure** is a **trans-vesical (suprapubic)** open prostatectomy. In this approach, the surgeon makes a midline subumbilical incision, opens the urinary bladder (cystotomy), and enucleates the adenoma through the bladder lumen. It is particularly indicated for very large prostates (>80-100g) or when there are associated bladder pathologies like large calculi or diverticula. **Analysis of Incorrect Options:** * **A. TURP (Transurethral Resection of the Prostate):** This is an endoscopic procedure where the prostate is reached via the **urethra**. It is the "Gold Standard" for moderate-sized glands but does not involve a trans-vesical incision. * **B. Millin Prostatectomy:** This is a **retropubic** open prostatectomy. The surgeon reaches the prostate through the space of Retzius without opening the bladder. The prostatic capsule is incised directly. * **C. Young’s Prostatectomy:** This uses a **perineal approach** to reach the prostate. It is rarely used for BPH today but was historically used for prostatic carcinoma. **High-Yield Clinical Pearls for NEET-PG:** * **Freyer’s:** Trans-vesical; main complication is primary/reactionary hemorrhage from the prostatic bed. * **Millin’s:** Retropubic; advantage is better visualization of the prostatic bed and no bladder injury, but it cannot address bladder stones. * **TURP Syndrome:** Caused by systemic absorption of glycine (irrigation fluid), leading to hyponatremia and neurological symptoms. * **Indication for Open Prostatectomy:** Generally reserved for prostate volume **>80-100 ml**.

Q: Predisposing factors for carcinoma of the penis include all of the following except:

Papilloma. **Explanation:** Carcinoma of the penis (most commonly Squamous Cell Carcinoma) is strongly associated with chronic irritation, poor hygiene, and specific viral infections. **Why Papilloma is the correct answer:** While Human Papillomavirus (HPV) types 16 and 18 are significant risk factors, a simple **Papilloma** (a benign epithelial tumor) is not considered a direct predisposing or premalignant condition for penile cancer. In contrast, conditions like *Erythroplasia of Queyrat* or *Bowen’s disease* (Carcinoma in situ) are the actual precursors. **Analysis of Incorrect Options:** * **Phimosis (Option B):** This is the most significant risk factor. It leads to the accumulation of **smegma**, which acts as a chronic chemical irritant and promotes bacterial decomposition, significantly increasing carcinogenic risk. * **Balanoposthitis (Option C):** Chronic inflammation of the glans and foreskin (often due to poor hygiene or phimosis) causes recurrent tissue injury and repair, which predisposes the epithelium to malignant transformation. * **Paget’s Disease (Option D):** Extramammary Paget’s disease of the penis is a rare intraepithelial neoplasia. It is considered a premalignant condition that can progress to or be associated with underlying adnexal carcinoma. **NEET-PG High-Yield Pearls:** * **Protective Factor:** Neonatal circumcision is highly protective against penile cancer (virtually eliminates the risk). * **Premalignant Lesions:** Remember the "Rule of B" – **B**owen’s disease (shaft), **B**alanitis Xerotica Obliterans (BXO), and **B**uschke-Löwenstein tumor (Giant Condyloma Acuminatum). * **Lymph Node Spread:** The first site of metastasis is usually the **Vertical group of Superficial Inguinal Lymph Nodes**. * **Sentinel Node:** The **Node of Cloquet** (deep inguinal) is a key landmark in surgical staging.

Q: What is the major hazard of an ectopic testis?

Liable to injury. ### Explanation The primary hazard of an **ectopic testis** is its increased susceptibility to **trauma (injury)**. Unlike an undescended testis (cryptorchidism), which is arrested along the normal path of descent (usually in the inguinal canal), an ectopic testis deviates from this path. It is most commonly found in the **superficial inguinal pouch** (Denis Browne pouch), but can also be perineal, femoral, or at the base of the penis. In these superficial and fixed locations, the testis lacks the protective mobility of the scrotum and is not shielded by the inguinal canal, making it highly **liable to injury** from external pressure or direct trauma. #### Analysis of Incorrect Options: * **A. Impotence:** Impotence (erectile dysfunction) is a vascular or neurological issue and is not caused by the malposition of a testis. * **B. Carcinoma:** While the risk of malignancy is significantly higher in an **undescended testis** (especially intra-abdominal), the risk in an ectopic testis is much lower because it resides in a cooler environment outside the abdominal cavity. * **D. Hernia:** An indirect inguinal hernia is almost always associated with an *undescended* testis due to a patent processus vaginalis. In ectopic testis, the processus vaginalis often closes normally, making hernia a less common association. #### High-Yield Clinical Pearls for NEET-PG: * **Most common site of ectopia:** Superficial inguinal pouch. * **Most common site of undescended testis:** Inguinal canal. * **Key Distinction:** An ectopic testis has a **long spermatic cord**, allowing it to be placed in the scrotum without tension (Orchidopexy), whereas an undescended testis has a **short cord**. * **Complications of Maldescended Testis:** Infertility (due to higher temperature), Malignancy (Seminoma is most common), Torsion, and Inguinal Hernia.

Q: Optical urethroplasty is indicated for which of the following conditions?

Congenital stricture of the urethra. **Explanation:** **Optical Urethroplasty** (also known as **Direct Vision Internal Urethrotomy - DVIU**) is a minimally invasive endoscopic procedure used to treat urethral strictures. It involves using an endoscope (urethrotome) equipped with a cold knife or laser to incise the fibrotic scar tissue of the stricture under direct visualization, thereby widening the urethral lumen. 1. **Why Option A is Correct:** **Congenital stricture of the urethra** (and short-segment acquired strictures, usually <1.5 cm) is the primary indication for optical urethroplasty. It is most effective for primary, non-obliterative strictures where the underlying corpus spongiosum is relatively healthy. 2. **Why the Other Options are Incorrect:** * **B & C (Hypospadias and Epispadias):** These are congenital malformations involving an abnormal location of the urethral meatus. They require complex **reconstructive plastic surgery** (e.g., Snodgrass procedure, MAGPI) to create a new urethra (urethroplasty) and correct penile curvature (chordee), rather than a simple internal incision. * **D (Testicular Tumors):** These are managed via **Radical Inguinal Orchidectomy**. Urethral procedures have no role in the management of testicular malignancies. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard for Urethral Stricture:** While DVIU is common for short strictures, **Urethroplasty (Excision and Primary Anastomosis or Substitution)** is the gold standard for long-term cure, especially for recurrent or long-segment (>2 cm) strictures. * **Sachse’s Urethrotome:** The specific instrument used for Optical Urethroplasty. * **Contraindication:** DVIU should not be performed if there is an active urinary tract infection (UTI). * **Recurrence:** The most common complication of DVIU is the recurrence of the stricture.

Q: Struvite stones are primarily associated with which of the following ions?

Magnesium. **Explanation:** Struvite stones, also known as **Triple Phosphate stones**, are composed of **Magnesium Ammonium Phosphate ($MgNH_4PO_4 \cdot 6H_2O$)**. They are primarily associated with **Magnesium**, Ammonium, and Phosphate ions. These stones form in the presence of urease-producing bacteria (most commonly *Proteus mirabilis*, but also *Klebsiella* and *Pseudomonas*). The bacterial enzyme urease splits urea into ammonia and carbon dioxide, which increases the urinary pH (alkaline urine), creating the ideal environment for magnesium ammonium phosphate to precipitate. **Analysis of Options:** * **Option A (Magnesium):** This is the primary cation that defines the chemical structure of a struvite stone. * **Option B (Calcium):** While calcium is the most common component of kidney stones overall (Calcium Oxalate), it is not the defining ion of struvite. However, struvite stones often contain a small amount of Calcium Phosphate (Carbonate Apatite), which leads to the term "Triple Phosphate." * **Option C (Sodium and Potassium):** These are monovalent cations that do not form the crystalline lattice of struvite stones. * **Option D (Both Magnesium and Calcium):** While both can be present, the question asks what they are *primarily* associated with. The hallmark of struvite is the Magnesium-Ammonium-Phosphate complex. **High-Yield Clinical Pearls for NEET-PG:** * **Morphology:** They typically form **Staghorn Calculi**, filling the renal pelvis and calyces. * **Microscopy:** Characteristic **"Coffin-lid"** appearance of crystals. * **Risk Factors:** More common in females due to a higher incidence of Urinary Tract Infections (UTIs). * **Radiology:** They are **Radio-opaque** (though less dense than calcium oxalate). * **Treatment:** Complete surgical removal (often via PCNL) is necessary because the stone acts as a reservoir for bacteria, leading to recurrent infections.

Q: What is the current treatment for short-segment passable stricture of the penile and bulbous urethra?

Optical internal urethrotomy. **Explanation:** The management of urethral strictures depends on the location, length, and severity of the narrowing. For a **short-segment (<1.5–2 cm)**, passable stricture in the bulbar or penile urethra, **Optical Internal Urethrotomy (OIU)**, also known as **Direct Vision Internal Urethrotomy (DVIU)**, is the current treatment of choice. * **Why Option B is Correct:** OIU involves using an endoscope (urethrotome) to visualize the stricture directly and incising the fibrotic tissue (usually at the 12 o'clock position) using a cold knife or laser. It is minimally invasive, has a high immediate success rate for short primary strictures, and allows for rapid recovery. * **Why Options A, C, and D are Incorrect:** * **Option A:** Thompson-Walker’s urethrotome is used for **blind internal urethrotomy**. This technique is largely obsolete because it lacks endoscopic visualization, increasing the risk of false passages and rectal injury. * **Option C:** **Syme’s operation** (External Urethrotomy) is an older open surgical procedure where the stricture is opened via a perineal incision using a staff as a guide. It is rarely performed today. * **Option D:** **Wheelhouse operation** is an open procedure used for **impassable/obliterative** strictures where no guide wire can pass. It involves a perineal approach to find the proximal opening of the urethra. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard for Long Strictures (>2 cm):** Urethroplasty (e.g., BMG - Buccal Mucosal Graft). * **Recurrence:** If a stricture recurs after the first OIU, the success rate of a second OIU is very low (<10%); Urethroplasty is then indicated. * **Most common site of post-traumatic stricture:** Bulbar urethra (due to straddle injury). * **Most common site of post-gonococcal stricture:** Bulbar urethra.

Q: All of the following are radiolucent kidney stones except?

Cysteine. In urology, kidney stones are classified based on their appearance on a plain X-ray (KUB) as **Radiopaque** (visible), **Radiolucent** (invisible), or **Faintly Radiopaque**. ### **Why Cysteine is the Correct Answer** While most organic stones are radiolucent, **Cystine stones** are unique because they contain **Sulfur** atoms. Sulfur has a higher atomic number, which makes these stones **faintly radiopaque** (often described as having a "ground-glass" appearance). Therefore, they are not truly radiolucent like the other options. ### **Analysis of Incorrect Options (Truly Radiolucent Stones)** * **A. Uric Acid:** These are the most common radiolucent stones. They form in acidic urine and are completely invisible on X-ray but visible on CT scans (Non-Contrast CT is the gold standard). * **B. Orotic Acid:** These are rare stones associated with hereditary orotic aciduria. Like most pure organic acid stones, they do not attenuate X-rays and are radiolucent. * **C. Xanthine:** These occur due to xanthine oxidase deficiency (genetic or secondary to Allopurinol). They are also purely organic and radiolucent. ### **High-Yield Clinical Pearls for NEET-PG** * **Mnemonic for Radiolucent Stones:** **"U X O"** (Uric acid, Xanthine, Orotic acid/Indinavir). * **Cystine Stones:** Associated with a hexagonal crystal shape in urine ("Benzene ring") and a positive **Cyanide-Nitroprusside test**. * **Indinavir Stones:** These are the *only* stones that are radiolucent even on a CT scan. * **Most Radiopaque Stone:** Calcium Oxalate (Monohydrate > Dihydrate). * **Staghorn Calculi:** Usually composed of **Struvite** (Magnesium Ammonium Phosphate) and are radiopaque.

Q: Which of the following is NOT a medical indication for circumcision?

Non-retractile foreskin. **Explanation:** The correct answer is **A. Non-retractile foreskin**. In pediatric surgery, it is crucial to distinguish between **physiologic phimosis** and **pathologic phimosis**. At birth, the inner surface of the prepuce is naturally adherent to the glans, making the foreskin non-retractile. This is a normal developmental stage. By age 3, about 90% of boys will have a retractile foreskin, and this percentage increases with age. Therefore, a simple non-retractile foreskin in an asymptomatic child is not a medical indication for surgery; it requires only observation and hygiene. **Analysis of Incorrect Options:** * **Paraphimosis (B):** This is a surgical emergency where the foreskin is trapped behind the glans, causing venous congestion and edema. While initial management involves manual reduction, circumcision is indicated to prevent recurrence. * **Recurrent Balanoposthitis (C):** Chronic or recurrent inflammation of the glans (balanitis) and prepuce (posthitis), often seen in diabetic patients or those with poor hygiene, is a definitive indication for circumcision. * **Recurrent Urinary Tract Infections (D):** In children with underlying urological abnormalities (like posterior urethral valves or high-grade VUR), circumcision is indicated as it significantly reduces the bacterial colonization of the preputial space, lowering the risk of ascending UTIs. **High-Yield Clinical Pearls for NEET-PG:** * **Absolute Indication:** Pathologic phimosis (scarring of the preputial orifice, often due to *Balanitis Xerotica Obliterans* or BXO). * **BXO:** The most common cause of pathological phimosis; it appears as a white, scarred, thickened prepuce. * **Contraindication:** Never perform circumcision in patients with **Hypospadias**, as the prepuce is required for future reconstructive surgery (chordee correction or urethroplasty).

Question 1

A palpable plaque with a curved penis is indicative of which condition?

Accepted Answer

Peyronie disease

Answer

Condylomata

Answer

Penile cancer

Answer

Hypospadias

Question 2

Circumcision is included in the management of carcinoma of the penis at which anatomical location?

Accepted Answer

Prepuce

Answer

Glans

Answer

Glanduloprepucial fold

Answer

Shaft of penis

Question 3

Which of the following procedures uses a trans-vesical approach in the surgical removal of prostate?

Accepted Answer

Freyer prostatectomy

Answer

TURP

Answer

Millin prostatectomy

Answer

Young's prostatectomy

Question 4

Predisposing factors for carcinoma of the penis include all of the following except:

Accepted Answer

Papilloma

Answer

Paget's disease

Answer

Phimosis

Answer

Balanoposthitis

Question 5

What is the major hazard of an ectopic testis?

Accepted Answer

Liable to injury

Answer

Impotence

Answer

Carcinoma

Answer

Hernia

Question 6

Optical urethroplasty is indicated for which of the following conditions?

Accepted Answer

Congenital stricture of the urethra

Answer

Hypospadias

Answer

Epispadias

Answer

Testicular tumors

Question 7

Struvite stones are primarily associated with which of the following ions?

Accepted Answer

Magnesium

Answer

Calcium

Answer

Sodium and Potassium

Answer

Both Magnesium and Calcium

Question 8

What is the current treatment for short-segment passable stricture of the penile and bulbous urethra?

Accepted Answer

Optical internal urethrotomy

Answer

Internal urethrotomy with Thompson-Walker's urethrotome

Answer

Syme's operation

Answer

Wheelhouse operation

Question 9

All of the following are radiolucent kidney stones except?

Accepted Answer

Cysteine

Answer

Uric acid

Answer

Orotic acid

Answer

Xanthiene

Question 10

Which of the following is NOT a medical indication for circumcision?

Accepted Answer

Non-retractile foreskin

Answer

Paraphimosis

Answer

Recurrent balanoposthitis

Answer

Recurrent urinary tract infections

Urology — MCQs

Urology — MCQs

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