Urology Practice Questions

Q: A 42-year-old patient presents with testicular swelling and lymphadenopathy. Which of the following investigations should NOT be performed?

Testicular biopsy. **Explanation:** In any patient presenting with a testicular mass suspicious of malignancy, a **Testicular Biopsy is strictly contraindicated.** **1. Why Testicular Biopsy is NOT performed (Correct Answer):** The primary reason is the risk of **scrotal seeding** and alteration of lymphatic drainage. The testis normally drains into the **paraaortic lymph nodes**, while the scrotum drains into the **inguinal lymph nodes**. Performing a biopsy (transscrotal approach) violates the tunica albuginea and the scrotal wall, potentially spreading tumor cells to the inguinal region. This changes the clinical stage and complicates the surgical management. The definitive diagnosis and treatment are performed via a **Radical Inguinal Orchidectomy**. **2. Why other options are incorrect:** * **Clinical Examination:** This is the mandatory first step. A painless, firm-to-hard testicular mass that does not transilluminate is a classic sign of malignancy. * **Prostate-rectal Examination:** This is part of a comprehensive urological physical exam to rule out local spread or associated pathology, especially in older patients. * **CECT:** Contrast-enhanced CT of the abdomen and pelvis is the gold standard for **staging** testicular cancer, as it identifies retroperitoneal (paraaortic) lymphadenopathy and distant metastasis. **Clinical Pearls for NEET-PG:** * **Standard of Care:** Radical Inguinal Orchidectomy (clamping the spermatic cord at the internal inguinal ring first). * **Lymphatic Drainage:** Testis → Paraaortic nodes; Scrotum → Superficial Inguinal nodes. * **Tumor Markers:** LDH, AFP (never raised in pure seminoma), and beta-hCG are essential for diagnosis and monitoring. * **Initial Imaging:** Scrotal Ultrasound is the first-line imaging modality (high sensitivity).

Q: Persistent priapism is rarely seen as a consequence of which of the following?

Spinal cord disease. **Explanation:** Priapism is defined as a persistent, usually painful, penile erection lasting more than 4 hours, unrelated to sexual stimulation. It is broadly classified into **Ischemic (Low-flow)** and **Non-ischemic (High-flow)** types. **Why Spinal Cord Disease is the Correct Answer:** While spinal cord injuries or diseases (e.g., autonomic dysreflexia, transverse myelitis) can cause priapism, it is typically **transient** and resolves as the initial spinal shock phase passes or the stimulus is removed. It rarely results in "persistent" or chronic priapism compared to hematological or mechanical causes. **Analysis of Incorrect Options:** * **Sickle Cell Disease (SCD):** This is the most common cause of ischemic priapism in children. Sickled RBCs cause venous stasis and occlusion within the corpora cavernosa, leading to prolonged, painful episodes. * **Leukemia:** Hyperleukocytosis (extremely high WBC count) increases blood viscosity, leading to mechanical obstruction of the venous outflow from the penis, a classic cause of persistent ischemic priapism. * **Prolonged Sexual Activity:** While less common than medical triggers, excessive physical trauma or prolonged stimulation can lead to high-flow priapism (often due to a ruptured cavernosal artery) or secondary inflammation that sustains an erection. **High-Yield Clinical Pearls for NEET-PG:** * **Ischemic Priapism (Low-flow):** A surgical emergency. Blood gas analysis of the corpora shows **Hypoxia, Hypercapnia, and Acidosis** (Dark blood). * **Non-Ischemic Priapism (High-flow):** Usually follows trauma; blood gas shows normal oxygen levels (Bright red blood). Not an emergency. * **Treatment Gold Standard:** Aspiration and irrigation followed by intracavernosal injection of **Phenylephrine** (alpha-agonist). * **Most common drug cause:** Intracavernosal injections for ED (e.g., Papaverine) and psychotropic drugs (e.g., Trazodone).

Q: Paradoxical aciduria (the excretion of acid urine in the presence of metabolic alkalosis) may occur in the presence of?

Gastric outlet obstruction. **Explanation:** **Paradoxical Aciduria** is a classic clinical phenomenon seen in **Gastric Outlet Obstruction (GOO)**, such as in cases of Infantile Hypertrophic Pyloric Stenosis or obstructing peptic ulcers. **Mechanism in Gastric Outlet Obstruction:** 1. **Metabolic Alkalosis:** Persistent vomiting leads to a massive loss of $H^+$ and $Cl^-$ ions, resulting in hypochloremic metabolic alkalosis. 2. **Dehydration and Hypovolemia:** Loss of fluid triggers the Renin-Angiotensin-Aldosterone System (RAAS). Aldosterone acts on the distal tubule to reabsorb $Na^+$ in exchange for $K^+$. 3. **Hypokalemia:** As $K^+$ is depleted due to both vomiting and renal loss, the kidneys are forced to conserve $K^+$. 4. **The "Paradox":** To continue reabsorbing $Na^+$ (to maintain blood pressure) when $K^+$ is no longer available, the distal tubule begins secreting $H^+$ ions into the urine instead. Thus, despite the body being in a state of alkalosis, the urine becomes acidic. **Analysis of Incorrect Options:** * **SIADH:** Characterized by hyponatremia and concentrated urine, but does not typically cause metabolic alkalosis or paradoxical aciduria. * **Severe Crush Injury:** Leads to Rhabdomyolysis, hyperkalemia, and **metabolic acidosis** (due to release of intracellular organic acids). * **Acute Tubular Necrosis (ATN):** Results in the inability of the tubules to concentrate urine or maintain pH gradients, usually leading to metabolic acidosis. **High-Yield Clinical Pearls for NEET-PG:** * **The Triad of GOO:** Hypochloremic, hypokalemic, metabolic alkalosis with paradoxical aciduria. * **Initial Fluid of Choice:** Normal Saline (0.9% NaCl). It addresses the volume deficit and provides $Cl^-$ to correct the alkalosis. * **Correction:** Potassium should be supplemented only after ensuring adequate urine output.

Q: A person with a renal transplant developed graft infection within 2 months. What is the most probable cause of this infection?

CMV. **Explanation:** In renal transplantation, the timing of post-transplant infections is a high-yield clinical indicator for the causative agent. Infections occurring within the **first 1 to 6 months** (the period of maximal immunosuppression) are most commonly caused by opportunistic pathogens, with **Cytomegalovirus (CMV)** being the most frequent. * **Why CMV is correct:** CMV is the most common clinically significant viral infection in the post-transplant period, typically peaking between **1 and 6 months**. It can manifest as a primary infection (from the donor organ) or reactivation in the recipient. It causes systemic symptoms (fever, leucopenia) and organ-specific graft dysfunction (nephritis). **Analysis of Incorrect Options:** * **Polyoma BK Virus:** While a major cause of graft dysfunction (BK virus-associated nephropathy), it typically presents later than CMV, usually **after 6 months** to a year post-transplant. * **Hepatitis C:** This is generally a pre-existing condition or a chronic complication rather than an acute graft infection occurring within the 2-month window. * **Herpes Simplex (HSV):** HSV infections usually occur very early (within the **first month**) and typically present as mucocutaneous lesions rather than generalized graft infection. **High-Yield Clinical Pearls for NEET-PG:** 1. **Timeline of Infections:** * ** 6 Months:** BK Virus, Community-acquired pneumonia, Chronic viral hepatitis. 2. **CMV Prophylaxis:** Valganciclovir is the drug of choice for prevention in high-risk patients (Donor +ve / Recipient -ve). 3. **Diagnosis:** CMV PCR (viral load) is the gold standard for monitoring and diagnosis.

Q: Hydrocele is labelled 'vaginal' when it is:

Limited to the scrotum. ### Explanation **Vaginal hydrocele** is the most common clinical type of hydrocele. It occurs due to the accumulation of excess serous fluid within the **tunica vaginalis**, a remnant of the processus vaginalis that surrounds the testis. #### 1. Why Option A is Correct In a vaginal hydrocele, the processus vaginalis is obliterated in its upper portion (near the inguinal canal) but remains patent only around the testis. Because the fluid is confined strictly to the sac surrounding the testis and does not extend superiorly, the swelling is **limited to the scrotum**. A key clinical feature is that one can "get above the swelling" during palpation. #### 2. Why Other Options are Incorrect * **Option B & D:** If the hydrocele extends up to the inguinal canal or the deep ring, it is termed an **Infantile Hydrocele**. In this type, the processus vaginalis remains patent up to the deep inguinal ring but does not communicate with the peritoneal cavity. * **Option C:** If the hydrocele communicates with the coelomic (peritoneal) cavity, it is a **Congenital Hydrocele**. This occurs due to a persistent, narrow patency of the entire processus vaginalis, allowing peritoneal fluid to drain into the scrotum (often associated with indirect inguinal hernia). #### 3. High-Yield Clinical Pearls for NEET-PG * **Transillumination Test:** The hallmark of hydrocele (positive/brilliant transillumination) because the fluid is clear. * **Primary vs. Secondary:** Vaginal hydrocele is usually primary (idiopathic). Secondary hydrocele occurs due to underlying pathology like **testicular tumor** or **epididymo-orchitis**; always perform an ultrasound to rule out malignancy in young men. * **Treatment of Choice:** * Small/Thin-walled: **Lord’s Plication**. * Large/Thick-walled: **Jaboulay’s Procedure** (Eversion of the sac). * **Aspiration:** Not recommended due to high recurrence rates and risk of infection/hematocele.

Q: Which of the following catheter materials is most suited for long-term use?

Silicone. **Explanation:** The choice of catheter material is determined by the intended duration of use, biocompatibility, and risk of complications like encrustation and infection. **Why Silicone is the Correct Answer:** Silicone is the material of choice for **long-term catheterization (up to 12 weeks)**. It is chemically inert and highly biocompatible, which minimizes urethral irritation and the risk of stricture formation. Crucially, silicone catheters have a **larger internal lumen** compared to latex (for the same external French size) and a smoother surface, which significantly reduces the rate of bacterial biofilm formation and mineral encrustation. **Analysis of Incorrect Options:** * **Latex (A):** These are intended for short-term use (up to 14 days). Latex is more prone to encrustation and can cause "latex urethritis" due to mucosal irritation. It is also contraindicated in patients with latex allergies. * **Rubber (C):** Red rubber catheters are stiff and primarily used for intermittent catheterization or one-time drainage. They are too irritant for indwelling or long-term use. * **Polyurethane (D):** While more biocompatible than PVC, polyurethane is typically used for short-to-medium term vascular access or specialized stents rather than standard long-term urinary drainage. **High-Yield NEET-PG Pearls:** * **Duration:** Short-term ( 14 days to 3 months) = 100% Silicone or Hydrogel-coated. * **Size:** Measured in **French (F)** units; 1 French = 1/3 mm. * **Complication:** The most common cause of catheter blockage in long-term users is encrustation by urease-producing bacteria (e.g., *Proteus mirabilis*). * **Silver-alloy catheters:** These are specifically designed to reduce the risk of Catheter-Associated Urinary Tract Infections (CAUTI) in the short term.

Q: What is the most consistent and persistent feature of carcinoma of the bladder?

Hematuria. **Explanation:** **Hematuria** is the most common, consistent, and often the earliest clinical presentation of bladder cancer, occurring in approximately 80–90% of patients. The underlying medical concept is that malignant urothelial tumors are highly vascular and friable; as the tumor grows, these superficial vessels easily rupture, leading to bleeding. Characteristically, this hematuria is **painless, profuse, and intermittent** (often described as "total hematuria" where blood is present throughout the act of micturition). **Why other options are incorrect:** * **Frequency and Dysuria (Options A & B):** These are symptoms of bladder irritability (often termed "cystitis-like symptoms"). While they occur in bladder cancer—particularly in **Carcinoma in Situ (CIS)** or infiltrating tumors—they are less consistent than hematuria and are more frequently associated with urinary tract infections or benign prostatic hyperplasia. * **Lump (Option C):** A palpable suprapubic mass is a **late sign** indicating advanced, muscle-invasive, or metastatic disease. It is neither a consistent nor an early feature of the disease. **Clinical Pearls for NEET-PG:** * **Gold Standard Investigation:** Cystoscopy is the most definitive investigation for diagnosing bladder cancer. * **Most Common Histology:** Transitional Cell Carcinoma (Urothelial Carcinoma) is the most common type (90%). * **Risk Factors:** Smoking (most common) and occupational exposure to aromatic amines (e.g., Aniline dyes). * **Rule of Thumb:** Any patient over 40 years presenting with painless hematuria must be investigated for malignancy until proven otherwise.

Question 1

A 42-year-old patient presents with testicular swelling and lymphadenopathy. Which of the following investigations should NOT be performed?

Accepted Answer

Testicular biopsy

Answer

Clinical examination

Answer

Prostate-rectal examination

Answer

Contrast-enhanced computed tomography (CECT)

Question 2

Persistent priapism is rarely seen as a consequence of which of the following?

Accepted Answer

Spinal cord disease

Answer

Sickle cell disease

Answer

Leukemia

Answer

Prolonged sexual activity

Question 3

Paradoxical aciduria (the excretion of acid urine in the presence of metabolic alkalosis) may occur in the presence of?

Accepted Answer

Gastric outlet obstruction

Answer

Syndrome of inappropriate antidiuretic hormone secretion

Answer

Severe crush injury

Answer

Acute tubular necrosis

Question 4

Which of the following is not a complication of total parenteral nutrition?

Accepted Answer

Decreased bone density

Answer

Hepatic steatosis

Answer

Renal failure

Answer

Septic venous thrombosis

Question 5

In seminoma, which of the following tumor markers are typically elevated?

Accepted Answer

Beta-human chorionic gonadotropin (β-HCG) and Lactate Dehydrogenase (LDH)

Answer

Alpha-fetoprotein (AFP)

Answer

Beta-human chorionic gonadotropin (β-HCG)

Answer

Alpha-fetoprotein (AFP), Beta-human chorionic gonadotropin (β-HCG), and Lactate Dehydrogenase (LDH)

Question 6

A person with a renal transplant developed graft infection within 2 months. What is the most probable cause of this infection?

Accepted Answer

CMV

Answer

Polyoma BK virus

Answer

Hepatitis C

Answer

Herpes simplex

Question 7

Hydrocele is labelled 'vaginal' when it is:

Accepted Answer

Limited to the scrotum

Answer

Extending up to the inguinal canal

Answer

Communicating into the coelomic cavity

Answer

Extending up to the deep inguinal ring

Question 8

A patient presents with unilateral hydronephrosis on ultrasound. She is asymptomatic and has normal ureteropelvic junction drainage. What is the appropriate management?

Accepted Answer

Analgesia as needed

Answer

Pyeloplasty

Answer

Nephrectomy

Answer

DJ stenting

Question 9

Which of the following catheter materials is most suited for long-term use?

Accepted Answer

Silicone

Answer

Latex

Answer

Rubber

Answer

Polyurethane

Question 10

What is the most consistent and persistent feature of carcinoma of the bladder?

Accepted Answer

Hematuria

Answer

Frequency

Answer

Dysuria

Answer

Lump

Urology — MCQs

Urology — MCQs

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