Urology Practice Questions

Q: A female patient presented with left iliac fossa pain for the past 6 months. On investigation, a 3 cm left renal pelvic stone was found with no hydroureteronephrosis, normal functioning kidneys on both sides, and no distal obstruction. What is the ideal management?

Percutaneous nephrolithotomy (PCNL). **Explanation:** The management of renal stones is primarily determined by the **size, location, and composition** of the stone. According to the EAU (European Association of Urology) guidelines, **Percutaneous Nephrolithotomy (PCNL)** is the gold standard and first-line treatment for renal pelvic stones **>2 cm** in diameter. 1. **Why PCNL is correct:** For a 3 cm stone, PCNL offers the highest stone-free rate (SFR) in a single session. It allows for direct fragmentation and physical removal of large stone burdens, which would otherwise be difficult to clear using less invasive methods. 2. **Why other options are incorrect:** * **ESWL:** Generally indicated for stones **<2 cm**. For a 3 cm stone, ESWL has a high failure rate, requires multiple sessions, and carries a significant risk of "Steinstrasse" (stone street), where fragmented debris obstructs the ureter. * **Laparoscopic Nephrolithotomy:** This is usually reserved for complex cases, failed endourological procedures, or when there is a concomitant anatomical abnormality (like a PUJ obstruction) requiring reconstruction. It is not the first-line "ideal" management for a simple 3 cm pelvic stone. * **Medical Dissolution:** This is only effective for **Uric Acid stones**. Most renal stones are Calcium Oxalate (radio-opaque), and a 3 cm stone is far too large to rely on dissolution therapy alone. **Clinical Pearls for NEET-PG:** * **Stone Size 2 cm:** PCNL is the treatment of choice. * **Lower Pole Stones:** PCNL is preferred if the stone is >1.5 cm due to poor clearance rates with ESWL in the lower calyx.

Q: Secondary deposits from prostatic carcinoma are commonest in which organ?

Bone. **Explanation:** Prostatic carcinoma is characterized by its high affinity for the skeletal system. The correct answer is **Bone**, which is the most common site for distant metastasis, occurring in approximately 85-90% of patients with advanced disease. **Why Bone is the correct answer:** The primary mechanism for this spread is the **Batson venous plexus**, a valveless vertebral venous system that connects the deep pelvic veins and thoracic veins to the internal vertebral venous plexuses. This allows retrograde flow of tumor cells directly to the axial skeleton (pelvis, lumbar spine, and femur) without passing through the lungs. Metastases from the prostate are characteristically **osteoblastic** (bone-forming), appearing as radiodense lesions on X-rays. **Why other options are incorrect:** * **Kidney:** While prostate cancer can cause obstructive uropathy by blocking the ureters, it rarely metastasizes to the renal parenchyma. * **Liver:** This is a common site for visceral metastasis in many cancers (like GI tract or lung), but in prostate cancer, visceral spread usually occurs much later in the disease progression, after bone involvement. * **Brain:** Brain metastases are rare in prostate cancer and typically signify an end-stage, androgen-independent phase of the disease. **High-Yield Clinical Pearls for NEET-PG:** * **Commonest site of bone metastasis:** Lumbar spine > Pelvis > Thoracic spine. * **Type of lesion:** Prostate cancer is the classic cause of **osteoblastic** lesions. (Contrast: Multiple myeloma and Breast cancer often cause osteolytic lesions). * **Tumor Marker:** PSA (Prostate-Specific Antigen) is used for screening and monitoring treatment response. * **Gold Standard Investigation for Bone Mets:** Bone Scan (Technetium-99m MDP) is more sensitive than X-ray for early detection.

Q: Urinary catheterization is indicated in cases of acute retention of urine due to which of the following conditions?

Postoperative status. **Explanation:** **Correct Answer: C. Postoperative status** In the postoperative period, acute retention of urine (ARU) is common due to the effects of anesthesia (which inhibits the detrusor reflex), pain, and the use of opioids. In these cases, the urethra is anatomically intact and unobstructed. Therefore, **urethral catheterization** is the first-line management to decompress the bladder and prevent myogenic damage. **Analysis of Incorrect Options:** * **A. Stricture:** In cases of urethral stricture, the lumen is narrowed and fibrotic. Forcing a catheter can cause a "false passage" or further trauma. While gentle catheterization with a small-bore or specialized catheter (e.g., Tiemann tip) is sometimes attempted, it is not the ideal indication compared to a clear passage. * **B. Rupture:** This is an absolute **contraindication** for urethral catheterization. If a urethral injury is suspected (e.g., blood at the meatus, high-riding prostate), a Retrograde Urethrogram (RUG) must be performed first. Blind catheterization can convert a partial tear into a complete rupture. * **C. Carcinoma of the Prostate:** Advanced prostate cancer causes mechanical obstruction and distortion of the prostatic urethra. Catheterization is often difficult and may require a Suprapubic Cystostomy (SPC) if the obstruction is complete. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard for ARU:** Urethral catheterization is the initial step unless trauma is suspected. * **Trauma Rule:** If "Blood at Meatus" is mentioned, the next best step is **RUG**, and the management for retention is **Suprapubic Catheterization (SPC)**. * **Post-obstructive Diuresis:** Monitor urine output and electrolytes closely after relieving chronic retention, as sudden decompression can lead to polyuria and hypotension. * **Size Matters:** A standard 16 Fr Foley catheter is typically used for adults.

Q: Which of the following is NOT a self-retaining urinary catheter?

Red rubber. **Explanation:** In urological practice, urinary catheters are classified based on their design and duration of use into **self-retaining** (indwelling) and **non-self-retaining** (intermittent) catheters. **Why "Red Rubber" is the correct answer:** The **Red Rubber (Robinson) catheter** is a non-self-retaining, straight catheter. It lacks any built-in mechanism (like a balloon or specialized flanges) to anchor it within the bladder. It is designed for **intermittent catheterization**, such as draining the bladder once or obtaining a sterile urine sample, and must be removed immediately after the procedure. **Analysis of Incorrect Options:** * **Foley Catheter:** The most common self-retaining catheter. it utilizes an **inflatable balloon** at the tip to remain secured in the bladder neck. * **Malecot Catheter:** A self-retaining catheter characterized by **"wings" or "flanges"** at the tip. These expand once inserted to provide anchorage. It is frequently used for suprapubic cystostomy or nephrostomy drainage. * **Gibbon Catheter:** A long, flexible, PVC self-retaining catheter. It is designed with **straps or wings** to be taped to the penis/thigh, allowing it to remain in situ for longer periods compared to simple straight catheters. **High-Yield Clinical Pearls for NEET-PG:** * **De Pezzer (Mushroom) Catheter:** Another self-retaining catheter with a bulbous tip, primarily used for suprapubic drainage or gastrostomy. * **Coude Tip:** A catheter with a curved tip used specifically to bypass an enlarged prostate. * **Material Matters:** Latex catheters (like standard Foley) should be avoided in patients with latex allergies; **Silicone** is the preferred alternative for long-term use as it is less prone to encrustation.

Q: What is the primary treatment for metastatic prostate carcinoma?

GnRH analogs. **Explanation:** The primary treatment for metastatic prostate carcinoma is **Androgen Deprivation Therapy (ADT)**. Since prostate cancer cells are androgen-dependent for growth, the goal is to reduce serum testosterone to castrate levels (<50 ng/dL). **Why GnRH Analogs are correct:** GnRH analogs (e.g., Leuprolide, Goserelin) are the gold standard for ADT. They work by providing continuous stimulation to the pituitary gland, leading to down-regulation of GnRH receptors. This results in a decrease in LH and FSH secretion, subsequently inhibiting testicular testosterone production. Note: They initially cause a transient "testosterone flare," which is usually managed by co-administering anti-androgens (like Flutamide) for the first few weeks. **Why other options are incorrect:** * **Radiotherapy (A & D):** While radiotherapy is a definitive treatment for localized prostate cancer or used palliatively for bone pain in metastasis, it is not the *primary* systemic treatment for metastatic disease. Chemotherapy (e.g., Docetaxel) is typically reserved for hormone-refractory cases. * **Estrogen therapy (B):** Historically used (Diethylstilbestrol), it reduces testosterone but is no longer a first-line choice due to significant cardiovascular side effects and thromboembolic risks. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site of metastasis:** Bone (specifically Osteoblastic lesions). * **Tumor Marker:** PSA (Prostate Specific Antigen) is used for monitoring response to therapy. * **Castrate-Resistant Prostate Cancer (CRPC):** Defined as disease progression despite testosterone levels being at castrate levels. * **Alternative to GnRH Analogs:** Bilateral Orchidectomy (Surgical Castration) is the fastest way to achieve castrate levels of testosterone.

Q: A 23-year-old male presents with mild, intermittent right iliac fossa pain that worsens at night, leading to exhaustion. Examination reveals mild hematuria. Urine analysis shows numerous RBCs, 50 WBCs/hpf, and a pH of 5.5. What is the most likely diagnosis?

Ureteral calculus. ### Explanation The clinical presentation is classic for a **Ureteral Calculus** (Ureterolithiasis). **1. Why Ureteral Calculus is correct:** * **Pain Pattern:** Right iliac fossa pain suggests a stone lodged in the lower third of the ureter. The "worsening at night" is a high-yield clinical feature; ureteral peristalsis and changes in hydrostatic pressure during recumbency often exacerbate the colic, leading to exhaustion. * **Hematuria:** Physical irritation of the ureteral mucosa by the stone causes hematuria (both gross and microscopic). * **Urinalysis:** The presence of RBCs and WBCs (pyuria) is common in urolithiasis even without infection, due to local inflammation. A **pH of 5.5 (acidic)** is highly suggestive of **Uric Acid** or **Calcium Oxalate** stones, which are the most common types. **2. Why the other options are incorrect:** * **Glomerulonephritis:** Typically presents with painless hematuria, RBC casts, significant proteinuria, and systemic features like hypertension or edema, rather than localized iliac fossa pain. * **Carcinoma of the Urinary Bladder:** While it causes hematuria, it is usually **painless** and occurs in an older age group (typically >50 years). * **Cystitis:** While it causes pyuria and hematuria, the primary symptoms are irritative (frequency, urgency, dysuria) and suprapubic pain, rather than episodic iliac fossa pain that worsens at night. **3. NEET-PG High-Yield Pearls:** * **Gold Standard Investigation:** Non-Contrast CT (NCCT) KUB is the investigation of choice for ureteral calculi. * **Most Common Site of Impaction:** The Vesicoureteric Junction (VUJ), which is the narrowest part of the ureter. * **Pain Referral:** Ureteral colic typically radiates from "loin to groin." * **Management:** Stones <5 mm usually pass spontaneously with medical expulsive therapy (Alpha-blockers like Tamsulosin).

Q: A patient with positive biopsy findings and negative workup undergoes a radical prostatectomy. The pathology report reveals Gleason score 9/10 and involvement of several pelvic lymph nodes. Which is the most likely site for prostatic cancer metastasis?

Bone. **Explanation:** Prostate cancer has a high predilection for hematogenous spread, with the **skeletal system (Bone)** being the most common site of distant metastasis, occurring in approximately 80-90% of patients with metastatic disease. **Why Bone is the Correct Answer:** The spread to the bone occurs primarily via the **Batson venous plexus**, a valveless vertebral venous system that connects the deep pelvic veins and thoracic veins to the internal vertebral venous plexuses. This allows retrograde flow of tumor cells directly to the axial skeleton (lumbar vertebrae, pelvis, and ribs) without passing through the lungs. Characteristically, prostate cancer metastases to the bone are **osteoblastic** (sclerotic), appearing as dense white areas on X-ray, though mixed lesions can occur. **Analysis of Incorrect Options:** * **A. Liver:** While the liver is a site of visceral metastasis, it is significantly less common than bone and usually occurs in the very late stages of the disease. * **B. Kidney:** The kidney is an extremely rare site for secondary metastasis from the prostate; prostate cancer is more likely to cause obstructive uropathy (hydronephrosis) rather than parenchymal metastasis. * **C. Lung:** The lung is the most common site for **visceral** metastasis, but it ranks second overall behind bone. **NEET-PG High-Yield Pearls:** * **Most common site of metastasis:** Bone (specifically the Lumbar Spine). * **Nature of bone lesions:** Predominantly **Osteoblastic** (Increased Alkaline Phosphatase). * **Gleason Scoring:** Based on glandular architecture. A score of 9/10 (as in this case) indicates high-grade, aggressive disease with a high risk of nodal and distant spread. * **Lymphatic spread:** The **Obturator nodes** are typically the first involved.

Q: A patient presents with an inguinal mass. What is the most likely diagnosis?

Anal carcinoma. ***Anal carcinoma*** - **Anal margin carcinomas** below the **dentate line** drain via **superficial inguinal lymph nodes**, causing inguinal lymphadenopathy. - **Squamous cell carcinoma** of the anal margin commonly presents with **inguinal masses** due to this specific lymphatic drainage pattern. *Prostate carcinoma* - Prostate cancer typically drains to **obturator**, **internal iliac**, and **presacral lymph nodes**, not inguinal nodes. - Usually presents with **urinary symptoms** and **elevated PSA**, without inguinal lymphadenopathy. *Testicular carcinoma* - Testicular tumors drain along **gonadal vessels** to **para-aortic lymph nodes** at the level of **L1-L2**. - Does not typically cause **inguinal lymphadenopathy** due to retroperitoneal drainage pattern. *Penile carcinoma* - While penile cancer can drain to **inguinal lymph nodes**, the clinical context suggests a **perianal primary lesion**. - Penile carcinoma would present with a **visible penile lesion** rather than isolated inguinal mass.

Question 1

A female patient presented with left iliac fossa pain for the past 6 months. On investigation, a 3 cm left renal pelvic stone was found with no hydroureteronephrosis, normal functioning kidneys on both sides, and no distal obstruction. What is the ideal management?

Accepted Answer

Percutaneous nephrolithotomy (PCNL)

Answer

Extra-corporeal shock wave lithotripsy (ESWL)

Answer

Laparoscopic nephrolithotomy

Answer

Medical dissolution therapy with oral potassium citrate

Question 2

Secondary deposits from prostatic carcinoma are commonest in which organ?

Accepted Answer

Bone

Answer

Kidney

Answer

Liver

Answer

Brain

Question 3

Urinary catheterization is indicated in cases of acute retention of urine due to which of the following conditions?

Accepted Answer

Postoperative status

Answer

Stricture

Answer

Rupture

Answer

Carcinoma of the prostate

Question 4

Which of the following is NOT a self-retaining urinary catheter?

Accepted Answer

Red rubber

Answer

Foley

Answer

Malecot

Answer

Gibbon

Question 5

A PSA level greater than 2 ng/mL is seen in which of the following conditions?

Accepted Answer

Prostate cancer

Answer

Benign prostatic hyperplasia (BPH)

Answer

Prostatitis

Answer

Metastatic carcinoma

Question 6

What is the primary treatment for metastatic prostate carcinoma?

Accepted Answer

GnRH analogs

Answer

Radiotherapy

Answer

Estrogen therapy

Answer

Radiotherapy with chemotherapy

Question 7

A 23-year-old male presents with mild, intermittent right iliac fossa pain that worsens at night, leading to exhaustion. Examination reveals mild hematuria. Urine analysis shows numerous RBCs, 50 WBCs/hpf, and a pH of 5.5. What is the most likely diagnosis?

Accepted Answer

Ureteral calculus

Answer

Glomerulonephritis

Answer

Carcinoma of the urinary bladder

Answer

Cystitis

Question 8

A patient with positive biopsy findings and negative workup undergoes a radical prostatectomy. The pathology report reveals Gleason score 9/10 and involvement of several pelvic lymph nodes. Which is the most likely site for prostatic cancer metastasis?

Accepted Answer

Bone

Answer

Liver

Answer

Kidney

Answer

Lung

Question 9

A patient presents with an inguinal mass. What is the most likely diagnosis?

Accepted Answer

Anal carcinoma

Answer

Prostate carcinoma

Answer

Testicular carcinoma

Answer

Penile carcinoma

Question 10

All of the following statements about renal calculi are true, EXCEPT:

Accepted Answer

Uric acid stones are resistant to extracorporeal shock wave lithotripsy (ESWL).

Answer

Cystine stones form in acidic urine.

Answer

Struvite stones form in alkaline urine.

Answer

Oxalate stones are radiopaque.

Urology — MCQs

Urology — MCQs

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