Pediatric Surgery Practice Questions

Q: The EXIT (Ex utero intrapartum therapy) procedure is indicated for fetal conditions that obstruct the airway or impede ventilation. In which of the following conditions is the EXIT procedure NOT indicated?

Hypertrophic pyloric stenosis. **Explanation:** The **EXIT (Ex utero intrapartum therapy)** procedure is a specialized surgical technique performed during a Cesarean section. The goal is to maintain **fetoplacental circulation** (keeping the baby attached to the placenta) to provide oxygenation while the surgical team secures a definitive airway for a fetus with a predicted airway obstruction. **Why Option D is Correct:** **Hypertrophic Pyloric Stenosis (HPS)** is a condition characterized by hypertrophy of the pyloric sphincter, leading to gastric outlet obstruction. Crucially, HPS is **not a congenital anomaly** present at birth; it typically develops between **3 to 6 weeks of life**. Since it does not affect the airway or immediate postnatal ventilation, there is no indication for an EXIT procedure. **Why Other Options are Incorrect:** * **A & B (Cystic Hygroma and Teratoma):** Large cervical masses, such as cystic hygromas or cervical teratomas, can cause extrinsic compression of the fetal trachea. These are classic indications for EXIT to perform intubation or tracheostomy while the fetus is still oxygenated by the mother. * **C (Congenital Tracheal Stenosis):** This represents an intrinsic airway obstruction. EXIT allows time for complex airway management (like rigid bronchoscopy or bypass) before the placental support is severed. **High-Yield Clinical Pearls for NEET-PG:** * **Primary Indication for EXIT:** CHAOS (**C**ongenital **H**igh **A**irway **O**bstruction **S**yndrome). * **Key Requirement:** Maternal uterine relaxation (usually via high-dose volatile anesthetics) is essential to maintain placental blood flow. * **HPS Snapshot:** Presents with **non-bilious projectile vomiting**, "olive-shaped" mass, and **hypochloremic hypokalemic metabolic alkalosis**. It is a postnatal surgical emergency, not a fetal one.

Q: What is the most common tumor of the small bowel in children?

Lymphoma. **Explanation:** In the pediatric population, primary small bowel malignancies are rare, but when they occur, **Lymphoma** is the most common type. Specifically, **Non-Hodgkin Lymphoma (NHL)**, particularly the **Burkitt subtype**, is the most frequent histological variety. These tumors typically arise from the Peyer’s patches in the terminal ileum due to the high concentration of lymphoid tissue in that region. Clinically, they often present as a lead point for **intussusception** or as an abdominal mass with obstructive symptoms. **Analysis of Incorrect Options:** * **B & D. Carcinoma / Adenocarcinoma:** While adenocarcinoma is the most common primary malignancy of the small bowel in **adults** (typically occurring in the duodenum or jejunum), it is extremely rare in children, usually only seen in the context of genetic syndromes like FAP or Peutz-Jeghers. * **C. Leiomyosarcoma:** These are mesenchymal tumors (GISTs) that are exceptionally rare in the pediatric age group. They are more commonly seen in older adults. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site:** Terminal Ileum (due to abundance of lymphoid tissue). * **Most common presentation:** Acute intestinal obstruction or **ileocolic intussusception** in an older child (usually >3 years). * **Association:** Burkitt lymphoma is strongly associated with the **EBV virus** and the **t(8;14)** translocation. * **Management:** Unlike many other pediatric solid tumors, the primary treatment for intestinal lymphoma is **chemotherapy**; surgery is generally reserved for complications like perforation or obstruction.

Q: What is the type of the given intestinal atresia?

Type III. ***Type III*** - Characterized by **complete discontinuity** of the bowel with separation between the proximal and distal segments and a **V-shaped mesenteric defect**. - Includes subtypes **IIIa** (gap in mesentery) and **IIIb** (apple-peel deformity with spiral configuration of the distal small bowel around a single feeding vessel). *Type I* - Features an **intact bowel wall** with only a **mucosal/submucosal web** causing luminal obstruction. - The **mesentery remains continuous** and there is no external deformity of the bowel. *Type II* - Involves **complete obstruction** with blind-ending proximal and distal segments connected by a **fibrous cord**. - The **mesentery remains intact** without the characteristic V-shaped defect seen in Type III. *Type IV* - Characterized by **multiple atresias** at different levels of the small intestine resembling a **string of sausages**. - Results from extensive **vascular compromise** during fetal development affecting multiple bowel segments simultaneously.

Q: Which of the following statements about appendicitis in children is false?

Vomiting precedes abdominal pain.. In pediatric surgery, the sequence of symptoms is a critical diagnostic marker for acute appendicitis. **Explanation of the Correct Answer (B):** In acute appendicitis, the classic sequence of symptoms is **abdominal pain followed by vomiting**. The pain typically begins as periumbilical (visceral) and later shifts to the right iliac fossa (somatic). If vomiting precedes the onset of pain, clinicians should strongly suspect other diagnoses, such as gastroenteritis or intestinal obstruction. Therefore, statement B is false. **Analysis of Other Options:** * **Option A:** Localized pain (especially in the right lower quadrant) remains the **single most important and reliable symptom** for diagnosing appendicitis in children who are old enough to communicate. * **Option C:** In children younger than 5 years, the omentum is underdeveloped and cannot effectively "wrap" the inflamed appendix. This, combined with diagnostic delays in non-verbal children, leads to a high perforation rate of approximately **80%**. * **Option D:** The progression of appendicitis is rapid in pediatric patients. Statistics show that roughly **60% of perforations** occur within the first 48 hours of symptom onset, emphasizing the need for early surgical consultation. **High-Yield NEET-PG Pearls:** * **Most common cause of emergency abdominal surgery** in children: Acute appendicitis. * **Alvarado Score:** Used for diagnosis; a score of ≥7 is highly suggestive. * **The "Omentum" Factor:** The "policeman of the abdomen" is thin and short in toddlers, leading to generalized peritonitis rather than localized abscesses. * **Differential Diagnosis:** Always consider mesenteric adenitis (often follows a viral URTI) and Meckel’s diverticulitis.

Q: Kasai's procedure is the treatment of choice for which condition?

Biliary atresia. **Explanation** **Biliary Atresia** is the correct answer. It is a progressive fibro-inflammatory obliteration of the extrahepatic biliary tree, leading to obstructive jaundice in neonates. **Kasai’s procedure (Hepatoportoenterostomy)** is the standard surgical treatment. It involves the excision of the biliary remnants at the porta hepatis and the creation of a Roux-en-Y jejunal loop to allow bile drainage directly from the liver surface. For the best prognosis, it should ideally be performed before **60 days of life**. **Analysis of Incorrect Options:** * **Congenital Hypertrophic Pyloric Stenosis (CHPS):** The treatment of choice is **Ramstedt’s Pyloromyotomy**, where the hypertrophied pyloric muscle is incised longitudinally while keeping the mucosa intact. * **Duodenal Atresia:** Characterized by the "double bubble" sign on X-ray, the surgical management is **Duodenoduodenostomy** (Kimura’s procedure). * **Hirschsprung’s Disease:** This is a functional obstruction due to aganglionosis. Definitive treatment involves "pull-through" procedures such as **Duhamel, Soave, or Swenson** techniques. **High-Yield Clinical Pearls for NEET-PG:** * **Kasai’s Success:** If the procedure fails or cirrhosis develops, **Liver Transplantation** is the definitive treatment. Biliary atresia is the most common indication for pediatric liver transplant. * **Diagnostic Gold Standard:** Intraoperative Cholangiogram (IOC). * **Screening:** The "Stool Color Card" is used in some regions to screen for pale/acholic stools. * **Triad of Biliary Atresia:** Jaundice, acholic stools, and hepatomegaly in a neonate.

Question 1

The EXIT (Ex utero intrapartum therapy) procedure is indicated for fetal conditions that obstruct the airway or impede ventilation. In which of the following conditions is the EXIT procedure NOT indicated?

Accepted Answer

Hypertrophic pyloric stenosis

Answer

Cystic hygroma

Answer

Teratoma

Answer

Congenital tracheal stenosis

Question 2

What is the most common tumor of the small bowel in children?

Accepted Answer

Lymphoma

Answer

Carcinoma

Answer

Leiomyosarcoma

Answer

Adenocarcinoma

Question 3

A newborn with meningomyelocele is scheduled for surgery. What should be immediately used to cover the defect?

Accepted Answer

Normal saline gauze

Answer

Povidone iodine gauze

Answer

Tincture benzoin gauze

Answer

Methylene blue gauze

Question 4

A boy with undescended testis, what is the primary concern that necessitates surgical intervention?

Accepted Answer

Impotence

Answer

Cosmetic reasons

Answer

Infertility

Answer

Risk of malignancy

Question 5

Which of the following is true regarding hypospadias?

Accepted Answer

It is attributed to failure of complete urethral tubularisation in the fetus.

Answer

The urethral opening is most commonly in the perineum.

Answer

The urethra opens proximally and dorsally.

Answer

It is seen in 1 in 1500 boys.

Question 6

What is the type of the given intestinal atresia?

Accepted Answer

Type III

Answer

Type I

Answer

Type II

Answer

Type IV

Question 7

Which of the following statements about appendicitis in children is false?

Accepted Answer

Vomiting precedes abdominal pain.

Answer

Localized pain is the single most important symptom.

Answer

Perforation occurs in 80% of cases in children younger than 5 years.

Answer

60% of perforations occur within 48 hours of symptom onset.

Question 8

Kasai's procedure is the treatment of choice for which condition?

Accepted Answer

Biliary atresia

Answer

Congenital hypertrophic pyloric stenosis

Answer

Duodenal atresia

Answer

Hirschsprung's disease

Question 9

What is the better prognostic factor for operation of biliary duct obstruction in a newborn?

Accepted Answer

Age of 8 weeks

Answer

No passage of bile

Answer

Size of ductule > 200 micron

Answer

Weight of baby > 3 kg

Question 10

Recurrent pain abdomen with intestinal obstruction and a mass passing per rectum is most suggestive of which condition?

Accepted Answer

Intussusception

Answer

Internal herniation

Answer

Stricture

Answer

Strangulated hernia

Pediatric Surgery — MCQs

Pediatric Surgery — MCQs

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