Pediatric Surgery Basics Practice Questions

Q: A child is born with following finding what is best step in line of management?

Operate after 1 year age. ***Operate after 1 year age*** - This timing is typically associated with the surgical management of a **hydrocele of the canal of Nuck** or certain types of **inguinal hernias** that are asymptomatic and reducible in infants, allowing for potential closure or stabilization. - Waiting until 1 year reduces the **anesthetic risks** associated with early infancy and allows for more mature anatomical development of local structures. *Immediately operate* - Emergency surgery is reserved for **incarcerated** or **strangulated hernias** presenting with signs of bowel obstruction, severe pain, or skin changes. - It is not the standard of care for uncomplicated presentations, as it significantly increases the risk of **anesthetic complications** and **iatrogenic injury** to the spermatic cord in neonates. *Aspiration* - Aspiration is generally contraindicated in pediatric hydroceles due to the high risk of **infection** and the extremely high rate of **recurrence**. - It does not address the underlying patent **processus vaginalis**, which is the primary pathology in communicating hydroceles or inguinal hernias. *I & D* - Incision and drainage (I & D) is the treatment for **abscesses** and infection, not structural congenital malformations like hydroceles or hernias. - Performing I & D on a sterile hydrocele would introduce bacteria, leading to **pyocele** and potential damage to scrotal contents.

Q: Mother noticed swelling in groin region while child was coughing and crying, what is diagnosis?

Indirect inguinal hernia. ***Indirect inguinal hernia*** - This is the **most common type of inguinal hernia** seen in children, resulting from a **patent processus vaginalis** that fails to close. - The swelling typically becomes prominent or increases in size with **increased intra-abdominal pressure**, such as during **coughing, crying, or straining**. *Direct inguinal hernia* - Rare in children, as it is typically an **acquired condition** resulting from weakness in the **Hesselbach triangle** floor, often seen in adults. - It does not involve the **patent processus vaginalis** and protrudes directly through the abdominal wall, typically medial to the **inferior epigastric vessels**. *Undescended testis* - Presents as an **empty scrotum**, rather than a reducible bulge, although it can be associated with a hernia. - The mass, if palpable in the inguinal canal, will typically feel like a firm **testicular body** rather than a compressible, reducible bowel segment. *Femoral hernia* - Located inferior to the **inguinal ligament** and medial to the **femoral vein**, appearing as a bulge in the upper thigh. - Extremely rare in children and carries a high risk of **incarceration** or strangulation due to the narrow nature of the **femoral ring**.

Q: A newborn presenting with intestinal obstruction showed multiple air fluid levels on abdominal X-ray. Which of the following is NOT a likely diagnosis?

Pyloric obstruction. **Explanation:** The presence of **multiple air-fluid levels** on an abdominal X-ray indicates a **low intestinal obstruction** (distal to the duodenum). **1. Why Pyloric Obstruction is the Correct Answer:** In **Pyloric obstruction** (such as Infantile Hypertrophic Pyloric Stenosis), the blockage is at the gastric outlet. Since the obstruction is proximal to the small intestine, air cannot pass into the bowel loops. The X-ray typically shows a **single large gastric air bubble** with little to no gas distally. Therefore, multiple air-fluid levels are never seen in this condition. **2. Analysis of Incorrect Options:** * **Duodenal Atresia:** While classically associated with the "double bubble" sign, if there is a partial obstruction or distal transition, it can present with fluid levels. However, it is more proximal than ileal atresia. * **Ileal Atresia:** This is a classic cause of **low intestinal obstruction**. The multiple dilated loops of small bowel proximal to the atresia fill with air and fluid, creating the characteristic "stepladder" appearance of multiple air-fluid levels. * **Ladd’s Bands:** These are fibrous stalks associated with **Malrotation**. They can compress the duodenum or cause midgut volvulus. If the obstruction is significant, it leads to proximal bowel dilatation and multiple air-fluid levels. **Clinical Pearls for NEET-PG:** * **Single Bubble:** Pyloric stenosis. * **Double Bubble:** Duodenal atresia (associated with Down Syndrome). * **Triple Bubble:** Jejunal atresia. * **Multiple Air-Fluid Levels:** Ileal atresia, Meconium ileus, or Hirschsprung’s disease. * **Ground Glass Appearance:** Suggestive of Meconium ileus (Neuhauser’s sign).

Q: A two-month-old baby presented with non-bilious vomiting and a palpable epigastric lump. Which among the following will be the investigation of choice?

Ultrasound abdomen. **Explanation:** The clinical presentation of a two-month-old infant with **non-bilious, projectile vomiting** and a palpable epigastric mass (classically described as an **"olive-shaped" lump**) is a hallmark of **Infantile Hypertrophic Pyloric Stenosis (IHPS)**. **Why Ultrasound (USG) is the Investigation of Choice:** USG abdomen is the gold standard because it is non-invasive, avoids radiation, and provides high sensitivity and specificity. Diagnostic criteria on USG include: * **Pyloric muscle thickness:** >3 mm (most reliable) * **Pyloric canal length:** >14 mm * **Target sign** on transverse view and **Cervix sign** on longitudinal view. **Analysis of Incorrect Options:** * **B. X-ray Abdomen:** Usually non-specific. It may show a large gastric air bubble (distended stomach) with minimal distal gas, but it cannot confirm the diagnosis. * **C. Upper GI Series (Barium Swallow):** Historically used but now reserved for cases where USG is inconclusive. It shows the **"String sign"** (narrowed pyloric canal) or **"Beak sign."** It carries a risk of aspiration. * **D. CT Abdomen:** Not indicated due to high radiation exposure and the fact that soft tissue details of the pylorus are better visualized with high-frequency USG in infants. **High-Yield Clinical Pearls for NEET-PG:** * **Metabolic Abnormality:** Hypochloremic, hypokalemic, metabolic alkalosis with paradoxical aciduria (classic exam question). * **Initial Management:** Always correct fluid and electrolyte imbalances (Normal Saline is the fluid of choice) before surgery. * **Definitive Treatment:** Ramstedt’s subcutaneous pyloromyotomy. * **Age of Onset:** Typically 3 to 6 weeks of life; rare after 12 weeks.

Q: Which of the following statements about Bochdalek hernia is FALSE?

It occurs more commonly on the left side.. **Explanation** Congenital Diaphragmatic Hernia (CDH) is a critical topic for NEET-PG. To identify the false statement, we must analyze the anatomy and epidemiology of the Bochdalek hernia. **Analysis of Options:** * **Option B (The False Statement):** While the question marks this as the "correct" answer (meaning it is the false statement), there appears to be a technical error in the prompt's marking. **Bochdalek hernia DOES occur more commonly on the left side (80-85%)**. If the goal is to find the false statement among these options, all four are actually **true** clinical facts. However, in a typical exam setting, if one were forced to find a "false" nuance, one must ensure the side and location are precise. * **Option A:** This is **true**. Bochdalek hernia accounts for approximately 90-95% of all CDH cases, making it the most common type. * **Option C:** This is **true**. It results from the failure of the **pleuroperitoneal membranes** to fuse with the septum transversum and dorsal mesentery in the **posterolateral** aspect. * **Option D:** This is **true**. It is a developmental defect occurring between the 6th and 10th week of gestation. **Clinical Pearls for NEET-PG:** 1. **The "Classic Triad":** Cyanosis, Dyspnea, and Dextrocardia (if left-sided). 2. **Physical Exam:** Scaphoid abdomen and bowel sounds heard in the chest. 3. **Management:** The primary cause of mortality is **Pulmonary Hypoplasia** and persistent pulmonary hypertension, not the defect itself. 4. **Stabilization:** Always **intubate** immediately; avoid bag-and-mask ventilation as it distends the bowel and further compresses the lungs. 5. **Morgagni Hernia:** The rarer type (5-10%), usually **retrosternal/anterior** and more common on the **right** side.

Q: What is the most characteristic feature of congenital hypertrophic pyloric stenosis?

The pyloric tumour is best felt during feeding. **Explanation:** **Congenital Hypertrophic Pyloric Stenosis (CHPS)** is characterized by hypertrophy and hyperplasia of the muscular layers of the pylorus, leading to gastric outlet obstruction. **Why Option D is Correct:** The "pyloric tumor" is an olive-shaped mass representing the hypertrophied pylorus. It is **best felt during feeding** because, at this time, the abdominal wall muscles are relaxed, and the stomach is distended, pushing the pylorus against the anterior abdominal wall. Additionally, visible gastric peristalsis (left to right) is often seen during feeding, immediately preceding non-bilious projectile vomiting. **Analysis of Incorrect Options:** * **Option A:** While chronic cases can lead to dehydration and weight loss, patients are typically **not marasmic** at presentation. They are usually healthy infants who begin vomiting between 3–6 weeks of life. * **Option B:** Patients have a **voracious appetite** (hungry vomiter). They eagerly want to re-feed immediately after vomiting, unlike in systemic illnesses where anorexia is common. * **Option C:** CHPS shows a strong male predilection (Male:Female ratio of **4:1**) and most commonly affects the **first-born male child**. **High-Yield Clinical Pearls for NEET-PG:** * **Metabolic Abnormality:** Hypochloremic, hypokalemic, metabolic alkalosis with **paradoxical aciduria** (classic exam favorite). * **Diagnosis:** Ultrasound is the gold standard (Pyloric muscle thickness >4mm, length >14mm). * **Radiology Sign:** "String sign" or "Beak sign" on Barium swallow. * **Treatment:** Initial management is resuscitation with 0.45% or 0.9% NS with Potassium; definitive surgery is **Ramstedt’s Pyloromyotomy**.

Q: Which one of the following findings is most suggestive of neonatal small bowel obstruction?

Bilious vomiting. **Explanation:** In neonates, **bilious (green) vomiting** is considered a surgical emergency until proven otherwise. It is the hallmark sign of **neonatal small bowel obstruction (SBO)**. Anatomically, the presence of bile indicates that the obstruction is distal to the **Ampulla of Vater** (where the common bile duct enters the second part of the duodenum). While non-bilious vomiting can occur in proximal obstructions (like pyloric stenosis), green-stained emesis strongly suggests a mechanical blockage in the small intestine, such as malrotation with midgut volvulus, atresia, or meconium ileus. **Analysis of Incorrect Options:** * **Generalized abdominal distension:** While common in distal obstructions (like Hirschsprung’s or ileal atresia), it is often **absent** in proximal (high) small bowel obstructions (e.g., duodenal atresia), where only the epigastrium may be full. * **Failure to pass meconium:** 95% of healthy neonates pass meconium within 24 hours. While its absence is seen in SBO, it is more classically associated with **large bowel** issues like Hirschsprung’s disease or anorectal malformations. * **Refusal of feeds:** This is a highly **non-specific** finding in neonates and can be seen in sepsis, metabolic disorders, or prematurity, making it an unreliable indicator of mechanical obstruction. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Investigation:** An **Erect X-ray abdomen** is the initial investigation of choice to look for air-fluid levels or specific signs like the "Double Bubble" (Duodenal Atresia). * **Rule of Thumb:** Any neonate with bilious vomiting requires an immediate **Upper GI Contrast Study** to rule out Malrotation/Volvulus. * **Target Sign:** On ultrasound, this suggests Intussusception (though more common in infants 6–18 months).

Q: A child has swallowed a button battery, and radiological imaging shows it is located in the stomach. What is the next step in management?

Endoscopic guided retrieval. **Explanation:** The management of button battery ingestion is a critical pediatric emergency due to the risk of liquefactive necrosis and electrochemical burns. **Why Option A is Correct:** While many foreign bodies in the stomach can be observed, a **button battery in the stomach** is an exception if the child is symptomatic or if the battery is large (>20mm). However, current guidelines (NASPGHAN) increasingly favor **urgent endoscopic retrieval** even in asymptomatic cases if the battery remains in the stomach, to prevent gastric mucosal injury and potential perforation. If the battery is in the **esophagus**, it is a surgical emergency requiring immediate removal within 2 hours. **Why Other Options are Incorrect:** * **Option B:** Open laparotomy is overly invasive and reserved only for complications like perforation or obstruction that cannot be managed endoscopically. * **Option C:** Emetics (like Ipecac) are strictly contraindicated in foreign body ingestion as they increase the risk of aspiration and esophageal injury. * **Option D:** Observation is generally reserved for small, blunt objects. For button batteries, "watchful waiting" is risky because the moist environment of the stomach can complete the circuit, leading to rapid tissue damage. **High-Yield Clinical Pearls for NEET-PG:** * **The "Double Contour" Sign:** On X-ray (AP view), a button battery shows a circular shadow with an inner rim, distinguishing it from a coin. * **Mechanism of Injury:** Not leakage of chemicals, but the generation of an **electrical current** that creates hydroxide ions, leading to **alkaline (liquefactive) necrosis**. * **Emergency Pre-hospital Care:** If ingestion occurred within 12 hours and the child is >1 year old, giving **Honey** (10ml every 10 mins) can coat the battery and delay injury until reaching the hospital.

Q: A child presented with a small intestinal mass and intussusception, which was surgically resected. Histological examination revealed the tumor. Which is the most likely tumor associated with this presentation?

Lymphoma. **Explanation:** In the pediatric population, **Non-Hodgkin Lymphoma (NHL)**, specifically the Burkitt subtype, is the most common primary malignant tumor of the small intestine. The terminal ileum is the most frequent site due to the high concentration of Peyer’s patches (lymphoid tissue). These tumors often act as a **pathological lead point**, causing the bowel to invaginate, resulting in **intussusception**. While idiopathic intussusception is common in infants (6–36 months), an intussusception in an older child or one involving the small bowel should highly raise suspicion for a lead point like Lymphoma or Meckel’s diverticulum. **Analysis of Incorrect Options:** * **A. Carcinoid:** While these are common appendiceal tumors in children, they are extremely rare causes of small bowel masses or intussusception in the pediatric age group compared to lymphoma. * **B. Villous Adenoma:** These are premalignant epithelial tumors primarily seen in the colon of adults (elderly). They are virtually non-existent in the pediatric small intestine. * **C. Smooth Muscle Tumors (e.g., Leiomyoma/Leiomyosarcoma):** These are rare mesenchymal tumors in children. While they can cause bleeding or obstruction, they are significantly less common than lymphoma. **NEET-PG High-Yield Pearls:** * **Most common lead point for pediatric intussusception:** Meckel’s Diverticulum. * **Most common malignant lead point:** Lymphoma (Burkitt’s). * **Classic Triad of Intussusception:** Abdominal pain, palpable "sausage-shaped" mass, and "currant jelly" stools. * **Target/Donut Sign:** The classic ultrasonographic appearance of intussusception. * **Age Factor:** Intussusception in a child >6 years old is highly suggestive of a pathological lead point (Lymphoma).

Question 1

A child is born with following finding what is best step in line of management?

Accepted Answer

Operate after 1 year age

Answer

Immediately operate

Answer

Aspiration

Answer

I & D

Question 2

Mother noticed swelling in groin region while child was coughing and crying, what is diagnosis?

Accepted Answer

Indirect inguinal hernia

Answer

Direct inguinal hernia

Answer

Undescended testis

Answer

Femoral hernia

Question 3

A newborn presenting with intestinal obstruction showed multiple air fluid levels on abdominal X-ray. Which of the following is NOT a likely diagnosis?

Accepted Answer

Pyloric obstruction

Answer

Duodenal atresia

Answer

Ileal atresia

Answer

Ladd's bands

Question 4

A two-month-old baby presented with non-bilious vomiting and a palpable epigastric lump. Which among the following will be the investigation of choice?

Accepted Answer

Ultrasound abdomen

Answer

X-ray abdomen

Answer

Upper GI Series

Answer

CT abdomen

Question 5

Which of the following statements about Bochdalek hernia is FALSE?

Accepted Answer

It occurs more commonly on the left side.

Answer

It is the most common type of diaphragmatic hernia.

Answer

It occurs in the posterolateral aspect of the diaphragm.

Answer

It is a congenital condition.

Question 6

What is the most characteristic feature of congenital hypertrophic pyloric stenosis?

Accepted Answer

The pyloric tumour is best felt during feeding

Answer

The patient is commonly marasmic

Answer

It is associated with early loss of appetite

Answer

It mostly affects the first-born female child

Question 7

Which one of the following findings is most suggestive of neonatal small bowel obstruction?

Accepted Answer

Bilious vomiting

Answer

Generalized abdominal distension

Answer

Failure to pass meconium in the first 24 hours

Answer

Refusal of feeds

Question 8

A child presented with severe respiratory distress two days after birth. On examination, he was observed to have a scaphoid abdomen and decreased breath sounds on the left side. He was managed by prompt endotracheal intubation. After ET tube placement, the maximal cardiac impulse shifted further to the right side. What should be the next step in management?

Accepted Answer

Nasogastric tube insertion and decompression of the bowel.

Answer

Confirm the position of the endotracheal tube by chest X-ray.

Answer

Emergency surgery.

Answer

Chest X-ray to confirm diagnosis.

Question 9

A child has swallowed a button battery, and radiological imaging shows it is located in the stomach. What is the next step in management?

Accepted Answer

Endoscopic guided retrieval

Answer

Open laparotomy and retrieval

Answer

Administer emetics for removal of the battery

Answer

Observation with repeat X-ray after 24 hours

Question 10

A child presented with a small intestinal mass and intussusception, which was surgically resected. Histological examination revealed the tumor. Which is the most likely tumor associated with this presentation?

Accepted Answer

Lymphoma

Answer

Carcinoid

Answer

Villous adenoma

Answer

Smooth muscle tumor

Pediatric Surgery Basics — MCQs

Pediatric Surgery Basics — MCQs

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