Urology Practice Questions

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.

Q: A varicocele of the pampiniform plexus of veins has all the following characteristics except?

Frequently on the right side. **Explanation:** A varicocele is the abnormal dilation and tortuosity of the pampiniform plexus of veins within the spermatic cord. **Why Option D is the Correct Answer (The "Except" statement):** Varicoceles occur **frequently on the left side (approx. 90%)**, not the right. This is due to three anatomical reasons: 1. **Venous Drainage:** The left testicular vein enters the left renal vein at a **90-degree angle**, whereas the right testicular vein enters the IVC obliquely. 2. **Length:** The left testicular vein is longer, leading to higher hydrostatic pressure. 3. **Nutcracker Phenomenon:** The left renal vein can be compressed between the Superior Mesenteric Artery and the Aorta, causing backflow into the left testicular vein. *Note: An isolated right-sided varicocele is a "red flag" and warrants investigation for an underlying retroperitoneal mass (e.g., Renal Cell Carcinoma).* **Analysis of Incorrect Options:** * **A. Negative transillumination:** Varicoceles contain blood, not clear fluid (unlike hydroceles), so they do not transilluminate. * **B. Reducible:** The swelling typically disappears or reduces significantly when the patient lies down, as venous congestion decreases. * **C. Cough impulse:** Because the veins communicate with the abdominal venous system, an increase in intra-abdominal pressure (coughing/Valsalva) causes a palpable thrill or impulse. **Clinical Pearls for NEET-PG:** * **"Bag of Worms":** The classic clinical description on palpation. * **Infertility:** Varicoceles are the most common reversible cause of male infertility due to increased scrotal temperature and oxidative stress. * **Grading:** Grade I (Palpable only with Valsalva); Grade II (Palpable standing); Grade III (Visible through scrotal skin). * **Surgery:** Indicated for pain, testicular atrophy, or infertility. The **Gold Standard** is Microsurgical Subinguinal Varicocelectomy.

Question 1

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 2

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 3

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 4

Which of the following can cause failure to thrive?

Accepted Answer

Malabsorption

Answer

Child abuse

Answer

Gastroesophageal reflux disease

Answer

Chromosomal disorders

Question 5

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 6

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 7

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

Accepted Answer

Silicone

Answer

Latex

Answer

Rubber

Answer

Polyurethane

Question 8

A patient diagnosed with sepsis from a urinary tract infection is being discharged. What do you plan to include in her discharge teaching?

Accepted Answer

Drink 8 to 10 eight-ounce glasses of water daily

Answer

Take cool baths

Answer

Avoid tampon use

Answer

Avoid sexual activity

Question 9

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

Accepted Answer

Hematuria

Answer

Frequency

Answer

Dysuria

Answer

Lump

Question 10

A varicocele of the pampiniform plexus of veins has all the following characteristics except?

Accepted Answer

Frequently on the right side

Answer

Negative transillumination test

Answer

Reducible

Answer

Cough impulse is present

Urology — MCQs

Urology — MCQs

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