Urology Practice Questions

Q: Which paraneoplastic syndrome is NOT typically seen in renal cell carcinoma?

Acanthosis nigricans. Renal Cell Carcinoma (RCC) is famously known as the **"Internist’s Tumor"** because it can present with a wide array of paraneoplastic syndromes (PNS) due to the ectopic secretion of various hormones and cytokines. **Why Acanthosis Nigricans is the Correct Answer:** Acanthosis nigricans (velvety hyperpigmentation in skin folds) is a cutaneous marker of internal malignancy, but it is most strongly associated with **gastric adenocarcinoma** and other GI malignancies. It is **not** a typical feature of RCC. **Explanation of Incorrect Options (Common PNS in RCC):** * **Polycythemia (Option C):** This is a classic PNS in RCC caused by the ectopic production of **Erythropoietin (EPO)**. It occurs in about 1-5% of patients. * **Hypercalcemia (Option D):** This is the most common metabolic PNS in RCC. It is usually caused by the secretion of **Parathyroid Hormone-related Protein (PTHrP)**, mimicking primary hyperparathyroidism. * **Amyloidosis (Option B):** Chronic inflammation associated with RCC can lead to **Secondary (AA) Amyloidosis**, which may present as nephrotic syndrome in the contralateral kidney. **High-Yield Clinical Pearls for NEET-PG:** * **Stauffer’s Syndrome:** Reversible hepatic dysfunction (elevated LFTs) in the absence of liver metastases; a unique PNS of RCC. * **Hypertension:** Often caused by increased **Renin** production. * **Cushing’s Syndrome:** Rarely occurs due to ectopic **ACTH** production. * **Classic Triad:** Hematuria, flank pain, and palpable mass (seen in only 10% of cases, usually indicates advanced disease).

Q: Which of the following is not typically seen in patients with complete bladder exstrophy?

Hypospadias. **Explanation:** Bladder exstrophy is a complex congenital malformation resulting from the failure of the infraumbilical mesenchymal tissue to migrate, leading to a defect in the anterior abdominal wall and the anterior bladder wall. **Why Hypospadias is the Correct Answer:** In bladder exstrophy, the defect occurs on the **dorsal** aspect of the penis. Therefore, the associated penile anomaly is **Epispadias**, not hypospadias (which is a ventral urethral defect). In males, the penis is typically short, broad, and curved dorsally (chordee) with a bifid glans. **Analysis of Incorrect Options:** * **Umbilical Hernia:** The abdominal wall defect involves the rectus muscles being widely separated (diastasis recti). The umbilicus is displaced inferiorly, and an umbilical hernia is a very common associated finding. * **Visible Ureterovesical Efflux:** In complete exstrophy, the posterior wall of the bladder (trigone) is exposed to the exterior. Consequently, the ureteric orifices are visible, and urine can be seen spurting directly from them onto the abdominal surface. * **Waddling Gait:** Patients have a **widened symphysis pubis** (pubic diastasis) due to the failure of the pelvic bones to fuse in the midline. This lateral rotation of the innominate bones results in a characteristic "waddling gait" when the child begins to walk. **High-Yield Clinical Pearls for NEET-PG:** * **Most common associated malignancy:** Adenocarcinoma of the bladder (due to chronic irritation and glandular metaplasia of the exposed mucosa). * **Classic Radiological Sign:** "Molar tooth sign" on cystography (though more specific to Joubert syndrome, in urology, the widened pubic symphysis is the hallmark). * **Management:** The modern staged functional reconstruction (MSRE) or complete primary repair of exstrophy (CPRE) are the preferred surgical approaches.

Q: All are true regarding testicular tumors except?

Choriocarcinoma is not a germ cell tumor.. ### Explanation **1. Why Option C is the Correct Answer (The False Statement):** Testicular tumors are primarily classified into **Germ Cell Tumors (GCTs)**, which account for ~95% of cases, and Sex Cord-Stromal Tumors. GCTs are further divided into **Seminomas** and **Non-Seminomatous Germ Cell Tumors (NSGCTs)**. Choriocarcinoma is a highly aggressive subtype of **NSGCT**. Therefore, the statement that it is "not a germ cell tumor" is medically incorrect. **2. Analysis of Other Options:** * **Option A:** Seminoma is indeed the most common pure germ cell tumor, typically occurring in the 4th decade of life. It is highly radiosensitive and has an excellent prognosis. * **Option B:** While GCTs are common in young men, **Lymphoma** is the most common testicular malignancy in men **over the age of 60**. It is usually a secondary manifestation of Systemic Diffuse Large B-cell Lymphoma. * **Option D:** Embryonal carcinoma is a major subtype of NSGCT. It is characterized by rapid growth, early hematogenous spread, and is often a component of mixed germ cell tumors. **3. High-Yield Clinical Pearls for NEET-PG:** * **Tumor Markers:** * **Yolk Sac Tumor:** Elevated Alpha-Fetoprotein (AFP) – *Pathognomonic finding: Schiller-Duval bodies.* * **Choriocarcinoma:** Markedly elevated beta-hCG (associated with hematogenous spread to lungs). * **Seminoma:** Never produces AFP. * **Risk Factor:** Cryptorchidism (undescended testis) is the most significant risk factor. Orchiopexy reduces the risk of trauma/torsion but does not completely eliminate the risk of malignancy. * **Lymphatic Spread:** Testicular tumors spread to **Para-aortic lymph nodes** (not inguinal nodes, unless the scrotum is involved). * **Investigation of Choice:** Scrotal Ultrasound followed by Contrast-Enhanced CT (CECT) for staging. **Biopsy is contraindicated** due to the risk of scrotal seeding.

Q: Fournier's gangrene occurs in which anatomical location?

Scrotum. **Explanation:** **Fournier’s Gangrene** is a life-threatening, rapidly progressing **necrotizing fasciitis** of the perineal, perianal, and genital regions. The correct answer is **Scrotum** because the disease specifically targets the superficial fascia (Colles’ fascia) of the scrotum and penis. It is typically a polymicrobial infection (aerobes and anaerobes) that leads to microvascular thrombosis, resulting in gangrene of the overlying skin. **Analysis of Options:** * **Scrotum (Correct):** The loose subcutaneous tissue and the continuity of Colles’ fascia with Scarpa’s fascia (abdominal wall) and Dartos fascia (scrotum) allow the infection to spread rapidly in this anatomical plane. * **Toes & Fingers (Incorrect):** Gangrene in the digits is usually "Dry Gangrene" or "Wet Gangrene" caused by peripheral vascular disease (e.g., Buerger’s disease) or diabetes, but it is not termed Fournier’s. * **Muscles (Incorrect):** Fournier’s gangrene is a disease of the **fascia and subcutaneous tissue**. While it can be deep, primary involvement of the muscle is termed "Myonecrosis" (e.g., Gas Gangrene caused by *Clostridium perfringens*), which is a different clinical entity. **High-Yield Clinical Pearls for NEET-PG:** * **Risk Factors:** Diabetes Mellitus (most common), chronic alcoholism, and immunocompromised states. * **Clinical Sign:** **Crepitus** on palpation (due to gas-forming organisms) and "exquisite pain out of proportion to physical findings" in early stages. * **Management:** This is a **surgical emergency**. Treatment involves aggressive surgical debridement, broad-spectrum antibiotics, and often hemodynamic support. * **Anatomy:** The infection spreads along the **Colles’ fascia** but usually spares the testes, as they have a separate blood supply (testicular artery) from the abdominal aorta.

Q: What is the most malignant testicular tumor?

Choriocarcinoma. **Explanation:** In testicular germ cell tumors (GCTs), **Choriocarcinoma** is recognized as the most aggressive and malignant subtype. The underlying medical concept for its high malignancy is its early and extensive **hematogenous spread** (via the bloodstream), often bypassing the typical lymphatic drainage patterns. By the time a primary testicular nodule is even palpable, widespread metastases to the lungs and brain are frequently already present. It is also characterized by extremely high levels of **beta-hCG**, which can lead to paraneoplastic syndromes like gynecomastia. **Analysis of Incorrect Options:** * **Embryonal Cell Carcinoma:** While more aggressive than seminomas and capable of rapid growth, it is less lethal than choriocarcinoma. It often presents as a component of mixed GCTs. * **Seminoma:** This is the most common testicular tumor but has the **best prognosis** because it is highly radiosensitive and tends to remain localized for longer periods. * **Teratoma:** In adults, these are considered malignant (unlike in children) but generally grow slowly and are less likely to metastasize early compared to choriocarcinoma. **High-Yield Clinical Pearls for NEET-PG:** * **Most common testicular tumor:** Seminoma. * **Most common tumor in infants/children:** Yolk Sac Tumor (associated with high Alpha-Fetoprotein/AFP and Schiller-Duval bodies). * **Tumor with the worst prognosis:** Choriocarcinoma. * **Tumor Marker:** Choriocarcinoma produces **only beta-hCG** (never AFP). If AFP is elevated, a mixed GCT must be suspected. * **Characteristic spread:** Choriocarcinoma is notorious for "hemorrhagic metastases," especially in the brain.

Question 1

Which paraneoplastic syndrome is NOT typically seen in renal cell carcinoma?

Accepted Answer

Acanthosis nigricans

Answer

Amyloidosis

Answer

Polycythemia

Answer

Hypercalcemia

Question 2

Which of the following is not typically seen in patients with complete bladder exstrophy?

Accepted Answer

Hypospadias

Answer

Umbilical hernia

Answer

Visible ureterovesical efflux

Answer

Waddling gait

Question 3

What does strangury mean?

Accepted Answer

Extreme wretching sensation at the end of micturition causing distress

Answer

Painless terminal hematuria

Answer

Painful hematuria

Answer

Pain during micturition

Question 4

A 34-year-old male undergoes vasectomy. Which of the following is the most frequent immediate complication of this procedure?

Accepted Answer

Hematoma

Answer

Infection

Answer

Impotence

Answer

Spontaneous reanastomosis

Question 5

A renal collar is used to prevent the spread of malignancy from the kidney. Around which structure is this collar placed?

Accepted Answer

Renal vein

Answer

Aorta

Answer

Inferior Vena Cava (IVC)

Answer

Renal artery

Question 6

All are true regarding testicular tumors except?

Accepted Answer

Choriocarcinoma is not a germ cell tumor.

Answer

Seminoma is the most common testicular tumor.

Answer

Lymphoma can occur in the testes.

Answer

Embryonal carcinoma is a non-seminomatous germ cell tumor.

Question 7

Fournier's gangrene occurs in which anatomical location?

Accepted Answer

Scrotum

Answer

Toes

Answer

Fingers

Answer

Muscles

Question 8

What is the ideal surgical approach for renal malignancy?

Accepted Answer

Transperitoneal

Answer

Retroperitoneal

Answer

Lumbar incision

Answer

Abdominothoracic incision

Question 9

Varicocele is common on the left testis because:

Accepted Answer

The left testicular vein drains into the left renal vein, which has high pressure.

Answer

The left testicular vein drains into the inferior vena cava, which has high pressure.

Answer

The left testis is situated lower.

Answer

Compression of the testicular vein by the rectum.

Question 10

What is the most malignant testicular tumor?

Accepted Answer

Choriocarcinoma

Answer

Embryonal cell carcinoma

Answer

Seminoma

Answer

Teratoma

Urology — MCQs

Urology — MCQs

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