Urology — MCQs

Urology Indian Medical PG Practice Questions and MCQs

Question 881: A 25-year-old male presented with painless testicular swelling and a history of fever and weight loss. All the following investigations are indicated in this patient, except:

A. USG scrotum
B. CT abdomen and pelvis
C. Chest x-ray
D. Trans-scrotal biopsy (Correct Answer)

Explanation: **Explanation:** The clinical presentation of a **painless testicular swelling** in a young male (25 years old), especially when accompanied by constitutional symptoms like fever and weight loss, is highly suspicious for **Testicular Germ Cell Tumor (GCT)**. **1. Why Trans-scrotal Biopsy is Contraindicated (Correct Answer):** Trans-scrotal biopsy or fine-needle aspiration (FNAC) is strictly **contraindicated** in suspected testicular cancer. The lymphatic drainage of the testis is to the **paraaortic lymph nodes**, while the scrotum drains to the **inguinal lymph nodes**. Performing a trans-scrotal procedure violates the "tunica albuginea" and the scrotal barrier, potentially leading to **scrotal seeding** and altering the natural lymphatic spread to the inguinal nodes. This complicates the staging and surgical management. The definitive diagnosis is always made via **High Inguinal Orchidectomy**. **2. Why other options are indicated:** * **USG Scrotum:** This is the initial investigation of choice. It helps differentiate between intra-testicular and extra-testicular masses and can identify characteristic features of malignancy. * **CT Abdomen and Pelvis:** This is essential for **staging**. It is the gold standard for evaluating the retroperitoneal (paraaortic) lymph nodes, which are the primary site of metastasis. * **Chest X-ray:** Used to screen for pulmonary metastasis (cannon-ball secondaries), which is common in advanced GCTs. **Clinical Pearls for NEET-PG:** * **Gold Standard Treatment:** Radical (High) Inguinal Orchidectomy. * **Lymphatic Drainage:** Testis → Paraaortic nodes; Scrotum → Superficial Inguinal nodes. * **Tumor Markers:** LDH (bulk), AFP (never raised in pure Seminoma), and beta-hCG (Choriocarcinoma/Seminoma). * **Most common type:** Seminoma is the most common single cell type.

Question 882: Pain in the hypogastric region may arise from which of the following organs?

A. Uterus (Correct Answer)
B. Left colon
C. Urinary bladder
D. Gallbladder

Explanation: **Explanation:** The location of visceral pain is primarily determined by the embryological origin of the organ and its corresponding sympathetic innervation. The abdomen is divided into three zones for visceral pain: the epigastrium (foregut), periumbilical region (midgut), and **hypogastrium (hindgut and pelvic viscera).** **Why Uterus is the Correct Answer:** The **uterus**, along with the fallopian tubes and the upper vagina, is a pelvic organ derived from the paramesonephric (Mullerian) ducts. Its sensory afferents travel with sympathetic nerves to the **T10–L1** spinal segments. Pain from the uterus (e.g., dysmenorrhea or early labor) typically manifests as midline pain in the **hypogastric (suprapubic) region.** **Analysis of Incorrect Options:** * **Left Colon:** While the distal third of the transverse colon to the rectum are hindgut structures, pain from the descending and sigmoid colon is more commonly localized to the **left iliac fossa** or lower abdomen rather than the midline hypogastrium. * **Urinary Bladder:** While the bladder is a pelvic organ, its pain (cystitis) is specifically referred to the **suprapubic area**. However, in the context of standard surgical teaching and embryological classification for this specific question, the uterus is the classic representative for deep pelvic visceral pain. * **Gallbladder:** This is a foregut derivative. Pain from the gallbladder (cholecystitis/biliary colic) is referred to the **epigastrium** or the **right hypochondrium**, and occasionally to the right shoulder (Boas' sign). **High-Yield Clinical Pearls for NEET-PG:** * **Foregut (T5–T9):** Esophagus to 2nd part of duodenum, Liver, Pancreas, Biliary apparatus → **Epigastric pain.** * **Midgut (T10–T11):** 2nd part of duodenum to proximal 2/3rd of transverse colon → **Periumbilical pain.** * **Hindgut (T12–L2):** Distal 1/3rd of transverse colon to upper anal canal → **Hypogastric pain.** * **Ureteric Colic:** Pain typically radiates from **loin to groin** (T11–L2).

Question 883: In varicocele surgery, by which vein is venous drainage performed?

A. Inferior Vena Cava (IVC)
B. Aorta (Aorta)
C. Superior epigastric vein
D. Cremasteric vein (Correct Answer)

Explanation: **Explanation:** The surgical management of varicocele (varicocelectomy) involves the ligation of the dilated and incompetent **pampiniform plexus** of veins, specifically the **internal spermatic veins**. **Why Cremasteric Vein is Correct:** The goal of the surgery is to obstruct the retrograde flow in the internal spermatic veins while preserving the arterial supply and alternative venous return. After the internal spermatic veins are ligated, the venous drainage of the testis is redirected through collateral pathways. The **cremasteric vein** (which drains into the inferior epigastric vein) and the **vasal vein** (which drains into the internal iliac system) become the primary routes for venous outflow. This ensures that the testis does not undergo venous congestion or infarction post-surgery. **Analysis of Incorrect Options:** * **A. Inferior Vena Cava (IVC):** This is the normal drainage site for the *right* testicular vein, but it is not a collateral pathway used after surgery. * **B. Aorta:** The aorta is an artery, not a vein; it provides the arterial supply (testicular artery) rather than venous drainage. * **C. Superior Epigastric Vein:** This vein drains the upper abdominal wall and eventually enters the internal thoracic vein; it does not participate in testicular venous drainage. **Clinical Pearls for NEET-PG:** * **Gold Standard Surgery:** Microsurgical subinguinal varicocelectomy is preferred due to lower recurrence rates and fewer complications (like hydrocele). * **Anatomy:** The left testicular vein joins the **left renal vein** at a right angle, explaining why varicoceles are more common on the left side (due to higher pressure). * **Sudden Onset:** A sudden onset of a right-sided varicocele in an older male should raise suspicion for **Renal Cell Carcinoma (RCC)** obstructing the IVC.

Question 884: Paget's disease of the nipple is:

A. A superficial manifestation of underlying breast carcinoma (Correct Answer)
B. A galactocele
C. A form of eczema
D. All of the above

Explanation: **Explanation:** **Paget’s disease of the nipple** is a rare manifestation of breast cancer where malignant cells (Paget cells) infiltrate the epidermis of the nipple-areola complex. **1. Why Option A is correct:** Paget’s disease is almost always (95-100% of cases) associated with an **underlying breast carcinoma**. In approximately 50% of cases, a palpable mass is present (usually invasive ductal carcinoma), while in the remaining 50% without a mass, the underlying pathology is typically **Ductal Carcinoma in Situ (DCIS)**. The "Paget cells" are large, pale-staining cells with prominent nucleoli that migrate from the underlying lactiferous ducts to the skin. **2. Why other options are incorrect:** * **Option B (Galactocele):** This is a benign milk-containing cyst typically seen in lactating women due to a blocked duct. It has no association with malignancy or the eczematous skin changes seen in Paget’s. * **Option C (Eczema):** While Paget’s disease clinically mimics eczema (presenting with crusting, scaling, and itching), it is a malignant process. A key clinical differentiator is that **Paget’s involves the nipple first** and may spread to the areola, whereas **Eczema usually involves the areola first** and may spare the nipple. **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Presentation:** Unilateral, itchy, eczematous-like lesion of the nipple that does not respond to topical steroids. * **Diagnosis:** Confirmed by a **full-thickness punch biopsy** of the nipple skin. * **Pathology:** Paget cells are **PAS positive** (diastase resistant) and often stain positive for **Her2/neu** protein. * **Management:** Treatment depends on the extent of the underlying carcinoma (Mastectomy or Breast Conserving Surgery + Radiotherapy).

Question 885: A pulled up cecum is seen in which of the following conditions?

A. Carcinoma of the colon
B. Carcinoid tumor
C. Ileocecal tuberculosis (Correct Answer)
D. Crohn's disease

Explanation: **Explanation:** The correct answer is **Ileocecal tuberculosis (C)**. In ileocecal tuberculosis, chronic inflammation leads to significant fibrosis and cicatrization of the ileocecal junction and the ascending colon. As the fibrous tissue contracts, it shortens the ascending colon, causing the cecum to be "pulled up" from the right iliac fossa toward the subhepatic region. This characteristic radiological and clinical finding is known as a **"Pulled-up Cecum."** On a Barium meal follow-through, this often presents alongside the **Stierlin sign** (rapid emptying of the inflamed segment) and the **Fleischner sign** (inverted umbrella appearance of the ileocecal valve). **Analysis of Incorrect Options:** * **Carcinoma of the colon:** Typically presents with "Apple-core" lesions or irregular filling defects. While it causes obstruction, it does not typically cause the symmetric longitudinal fibrosis required to pull the cecum superiorly. * **Carcinoid tumor:** These tumors often cause a desmoplastic reaction in the mesentery, leading to kinking or tethering of the small bowel loops, but they do not specifically cause a pulled-up cecum. * **Crohn’s disease:** While it involves the terminal ileum, Crohn’s is characterized by transmural inflammation, "string signs," and "skip lesions." It usually results in a narrow, fixed terminal ileum rather than the vertical displacement of the cecum. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site of GI TB:** Ileocecal region (due to high density of lymphoid tissue/Peyer's patches and increased physiological stasis). * **Barium Findings in TB:** * **Stierlin Sign:** Narrowing of the terminal ileum with rapid emptying into the cecum. * **Fleischner Sign:** Thickened, gaping ileocecal valve. * **Goose-neck deformity:** Loss of the normal ileocecal angle. * **Clinical Sign:** A "Doughy abdomen" is a classic physical exam finding in peritoneal tuberculosis.

Question 886: What is the treatment of choice for a patient with acquired vesicoureteric reflux presenting with a urinary tract infection?

A. Cotrimoxazole (Correct Answer)
B. Bilateral reimplantation of ureter
C. Injection of collagen into the ureter
D. Endoscopic resection of the ureter

Explanation: **Explanation:** The primary management principle for **Vesicoureteric Reflux (VUR)** associated with a urinary tract infection (UTI) is conservative medical management. The goal is to keep the urine sterile to prevent ascending infection (pyelonephritis) and subsequent renal scarring while waiting for potential spontaneous resolution. 1. **Why Cotrimoxazole is correct:** In a patient presenting with VUR and a UTI, the immediate priority is treating the infection and initiating **continuous low-dose antibiotic prophylaxis (CAP)**. Cotrimoxazole (Trimethoprim-Sulfamethoxazole) or Nitrofurantoin are the first-line agents used for this purpose. Most cases of low-grade VUR resolve spontaneously as the child grows and the intravesical length of the ureter increases. 2. **Why other options are incorrect:** * **Bilateral reimplantation of ureter:** This is a surgical intervention (e.g., Cohen’s or Politano-Leadbetter technique). Surgery is reserved for high-grade reflux (Grade V), failure of medical management, or progressive renal scarring. It is not the initial treatment of choice. * **Injection of collagen (STING procedure):** This is a minimally invasive endoscopic treatment where a bulking agent is injected sub-ureterically. While used for VUR, it is generally considered after a trial of medical management or for specific indications, not as the first-line treatment for an active UTI presentation. * **Endoscopic resection of the ureter:** This is not a standard treatment for VUR; resection is typically associated with managing ureteroceles or tumors. **Clinical Pearls for NEET-PG:** * **Gold Standard Investigation:** Voiding Cystourethrogram (VCUG/MCU) is used for diagnosis and grading (International Grading System I-V). * **DMSA Scan:** The best investigation to detect **renal scarring** (permanent damage). * **Spontaneous Resolution:** Most common in Grades I-III. * **Indication for Surgery:** Breakthrough UTIs despite prophylaxis, non-compliance, or Grade V reflux with scarring.

Question 887: What is the most common tumor in an undescended testis?

A. Seminoma (Correct Answer)
B. Teratoma
C. Both of the above
D. None of the above

Explanation: **Explanation:** **1. Why Seminoma is the correct answer:** Cryptorchidism (undescended testis) is the most significant risk factor for developing testicular germ cell tumors. Among patients with an undescended testis, **Seminoma** is the most common histological subtype (occurring in approximately 60-90% of cases). The risk is highest in abdominal testes compared to inguinal ones. The underlying pathophysiology involves thermal stress (higher intra-abdominal temperature) and dysgenetic changes in the germ cells. **2. Why other options are incorrect:** * **Teratoma:** While Teratomas are common germ cell tumors, especially in the pediatric age group, they are not the most frequent malignancy associated specifically with cryptorchidism. * **Non-Seminomatous Germ Cell Tumors (NSGCTs):** Although NSGCTs (like Embryonal carcinoma or Yolk sac tumors) can occur in undescended testes, they are statistically less frequent than Seminomas in this clinical context. **3. Clinical Pearls & High-Yield Facts for NEET-PG:** * **Relative Risk:** An undescended testis has a 10 to 40 times higher risk of malignancy than a normal testis. * **Orchidopexy:** Performing an orchidopexy before puberty (ideally before age 1) reduces the risk of malignancy but does **not** eliminate it. Its primary benefit is making the testis accessible for clinical examination and self-monitoring. * **Contralateral Risk:** About 10% of tumors in patients with unilateral cryptorchidism occur in the **normally descended** contralateral testis. * **Most common site:** The most common site for an undescended testis is the **inguinal canal**. * **Management:** If a tumor is suspected, the gold standard diagnostic step is an **Inguinal Orchidectomy**. Trans-scrotal biopsy is strictly contraindicated due to the risk of lymphatic seedling.

Question 888: Features of carcinoma penis include all except?

A. Metastasize to inguinal lymph nodes
B. Surgery is the treatment of choice
C. Hypospadias is a premalignant lesion (Correct Answer)
D. Circumcision provides protection

Explanation: **Explanation:** **Why Hypospadias is the correct answer (Option C):** Hypospadias is a congenital anatomical anomaly where the urethral opening is on the ventral aspect of the penis; it is **not** a premalignant condition. In contrast, premalignant lesions of the penis include **Bowen’s disease** (Erythroplasia of Queyrat), **Leukoplakia**, and **Balantitis xerotica obliterans (BXO)**. **Analysis of other options:** * **Option A:** Carcinoma penis is primarily a lymphophilic tumor. It characteristically metastasizes first to the **inguinal lymph nodes** (superficial followed by deep). The presence of nodal involvement is the most important prognostic factor. * **Option B:** Surgery remains the **gold standard** and treatment of choice. Depending on the stage and location, options range from wide local excision or glansectomy to partial or total penectomy with ilio-inguinal lymph node dissection. * **Option D:** Neonatal circumcision is highly protective. It prevents the accumulation of **smegma** (a byproduct of desquamated epithelial cells), which acts as a chronic irritant and carcinogen. It also reduces the risk of Phimosis, a major risk factor found in 25-75% of cases. **High-Yield Clinical Pearls for NEET-PG:** * **Most common histological type:** Squamous Cell Carcinoma (SCC). * **Risk Factors:** Phimosis (strongest association), HPV 16 & 18, smoking, and poor hygiene. * **Sentinel Node:** The **Cabanas node** (located at the junction of the epigastric and long saphenous veins) is historically considered the first site of metastasis. * **Staging:** TNM staging is used; clinical examination of the groin is crucial as 50% of palpable nodes may be inflammatory rather than metastatic.

Question 889: Which testicular tumor produces feminizing symptoms?

A. Seminoma
B. Teratoma
C. Leydig cell tumor
D. Sertoli cell tumor (Correct Answer)

Explanation: **Explanation:** The correct answer is **Sertoli cell tumor**. These are rare sex cord-stromal tumors that can produce estrogens. In adults, approximately 25-30% of patients present with feminizing symptoms such as **gynecomastia**, loss of libido, and erectile dysfunction due to the peripheral aromatization of hormones or direct estrogen secretion. **Why the other options are incorrect:** * **Seminoma (Option A):** This is the most common germ cell tumor. It typically presents as a painless testicular mass and is associated with elevated **hCG** in only 5-10% of cases, but it does not characteristically cause feminization. * **Teratoma (Option B):** A germ cell tumor composed of multiple germ layers (ectoderm, mesoderm, endoderm). While they can be associated with mixed germ cell tumors, they do not have a primary endocrine function that leads to feminization. * **Leydig cell tumor (Option C):** While these also belong to the sex cord-stromal group and *can* cause gynecomastia, they are primarily known for producing **androgens**. In children, they typically cause precocious puberty (virilization). While feminization is possible in adults, NEET-PG and standard surgical textbooks (like Bailey & Love) frequently highlight **Sertoli cell tumors** specifically for their feminizing potential. **High-Yield Clinical Pearls for NEET-PG:** * **Reinke’s Crystals:** Pathognomonic histological finding for **Leydig cell tumors** (not Sertoli). * **Sertoli Cell Tumors:** Associated with **Peutz-Jeghers Syndrome** and **Carney Complex**. * **Most common testicular tumor in infants:** Yolk sac tumor (associated with high **AFP**). * **Most common bilateral testicular tumor:** Lymphoma (usually in men >60 years).

Question 890: A patient presented with a hard swelling in the right testis. All are true statements regarding the management of this condition EXCEPT:

A. Trans-scrotal biopsy is needed (Correct Answer)
B. Inguinal exploration is done
C. High inguinal exploration should be done
D. Scrotal ultrasonography is done

Explanation: **Explanation:** In any patient presenting with a hard, painless testicular swelling, the primary clinical suspicion is **Testicular Cancer** until proven otherwise. **Why Option A is the correct answer (The "Except" statement):** Trans-scrotal biopsy or scrotal aspiration is **strictly contraindicated** in suspected testicular tumors. The lymphatic drainage of the testis is to the para-aortic nodes, whereas the scrotum drains to the inguinal nodes. Performing a trans-scrotal biopsy violates the "blood-testis barrier" and the scrotal skin, potentially leading to **lymphatic seeding** and altering the natural metastatic pathway of the tumor. This complicates the staging and surgical management of the patient. **Analysis of other options:** * **Options B & C (Inguinal Exploration):** The gold standard for diagnosis and initial treatment is a **Radical Inguinal Orchidectomy**. This involves a high inguinal incision to allow for early vascular control (clamping the spermatic cord at the internal inguinal ring) before manipulating the tumor, preventing hematogenous spread. * **Option D (Scrotal Ultrasonography):** This is the initial investigation of choice. It is highly sensitive (nearly 100%) in distinguishing between intra-testicular and extra-testicular masses and can identify non-palpable lesions. **High-Yield Clinical Pearls for NEET-PG:** * **Lymphatic Drainage:** Testis → Para-aortic nodes; Scrotum → Superficial Inguinal nodes. * **Tumor Markers:** Always check AFP, beta-hCG, and LDH before surgery for staging and prognosis. Note: AFP is *never* elevated in pure seminomas. * **Most Common Type:** Seminoma is the most common germ cell tumor; however, Mixed Germ Cell Tumors are frequently seen. * **Staging:** Contrast-enhanced CT (CECT) of the Abdomen and Pelvis is essential to evaluate para-aortic lymphadenopathy.

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