Pediatric Surgery Practice Questions

Q: Which of the following procedures is NOT performed in a case of Hirschsprung's disease?

Fasanella-Servat procedure. **Explanation:** Hirschsprung’s disease (Congenital Aganglionic Megacolon) is characterized by the absence of ganglion cells in the myenteric and submucosal plexuses. The definitive treatment involves a "pull-through" procedure to remove the aganglionic segment and bring functional, ganglionated bowel down to the anus. **Why Option C is Correct:** The **Fasanella-Servat procedure** is an ophthalmic surgery used to treat **mild ptosis**. It involves the excision of the superior border of the tarsus, the lower border of the Müller muscle, and the overlying conjunctiva. It has no relevance to pediatric surgery or the gastrointestinal tract. **Why the Other Options are Incorrect:** The following are the three classic definitive pull-through operations for Hirschsprung’s disease: * **Swenson’s Operation (A):** The original procedure involving proctectomy and end-to-end anastomosis. It requires full dissection of the rectum close to the pelvic nerves. * **Duhamel’s Operation (B):** A "retro-rectal" approach where the ganglionic bowel is brought down behind the rectum, creating a side-to-side anastomosis. This avoids anterior pelvic dissection. * **Soave’s Operation (D):** An "endorectal" pull-through where the rectal mucosa is stripped, and the ganglionic bowel is pulled through the remaining muscular cuff, protecting pelvic nerves. **NEET-PG High-Yield Pearls:** * **Gold Standard Diagnosis:** Rectal suction biopsy (shows absence of ganglion cells and hypertrophied nerve bundles). * **Most Common Site:** Rectosigmoid region (Short-segment disease). * **Modern Trend:** Transanal Endorectal Pull-Through (TEPT) is now frequently performed as a single-stage minimally invasive procedure. * **Associated Condition:** Down Syndrome (Trisomy 21) is seen in approximately 10% of cases.

Q: What is the primary treatment for Hirschsprung's disease?

Excision of the aganglionic segment. **Explanation:** **Hirschsprung’s Disease (Congenital Aganglionic Megacolon)** is characterized by the absence of ganglion cells (Meissner’s and Auerbach’s plexuses) in the distal bowel, starting from the internal anal sphincter and extending proximally. This results in a functional obstruction because the aganglionic segment remains in a state of tonic contraction. **Why the Correct Answer is Right:** The definitive treatment is the **excision of the aganglionic segment** followed by a "pull-through" procedure. The goal is to remove the non-functional, aperistaltic segment and anastomose the normally ganglionated proximal bowel to the anus. Common surgical techniques include the **Swenson, Duhamel, and Soave procedures.** **Why Other Options are Wrong:** * **Colostomy (A):** This is a temporary, stabilizing measure used in neonates with enterocolitis or massive colonic dilation to decompress the bowel before definitive surgery. It does not treat the underlying pathology. * **Colectomy (C):** Total colectomy is only indicated in rare cases of "Total Colonic Aganglionosis." In standard Hirschsprung’s (which usually involves the rectosigmoid), removing the entire colon is unnecessary and leads to significant morbidity. * **Sodium chloride wash (D):** Rectal irrigations with normal saline are used for preoperative bowel preparation or emergency decompression in Hirschsprung-associated enterocolitis (HAEC), but they are not curative. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** Full-thickness rectal biopsy (shows absence of ganglion cells and hypertrophied nerve bundles). * **Histochemistry:** Increased **Acetylcholinesterase (AChE)** staining is a classic diagnostic marker. * **X-ray Finding:** A "transition zone" between the narrow aganglionic distal segment and the dilated proximal colon. * **Associated Condition:** Strongly associated with **Down Syndrome** (Trisomy 21).

Q: What is the standard treatment for congenital hydrocele?

Herniotomy. **Explanation:** The standard treatment for congenital hydrocele is **Herniotomy**. **1. Why Herniotomy is the Correct Answer:** Congenital hydrocele is caused by a **patent processus vaginalis (PPV)**—a failure of the communication between the peritoneal cavity and the scrotum to obliterate. Because the underlying pathology is a persistent communication (similar to an indirect inguinal hernia), the treatment must involve the high ligation and division of this sac at the level of the internal inguinal ring. This procedure is called a **Herniotomy**. Unlike adult hydroceles, most congenital hydroceles are "communicating" and often resolve spontaneously by age 1–2; surgery is indicated if they persist beyond this age. **2. Why Other Options are Incorrect:** * **Excision of sac (Lord’s Procedure), Eversion of sac (Lord’s/Jaboulay), and Jaboulay procedure:** These are surgical techniques used for **primary vaginal hydroceles in adults**. In adults, the hydrocele is caused by an imbalance in fluid secretion and absorption within the tunica vaginalis, not a patent communication. Performing these scrotal-approach surgeries in a child would fail to address the PPV and carries a risk of injuring the vas deferens or cord structures. **Clinical Pearls for NEET-PG:** * **Approach:** Congenital hydrocele/hernia is always approached via an **inguinal incision**, whereas adult hydrocele is approached via a **scrotal incision**. * **Observation:** Most congenital hydroceles are managed conservatively until **12–24 months of age** as they may resolve spontaneously. * **Associated Condition:** If the hydrocele is "encysted" in the cord, it is known as an **Encysted Hydrocele of the Cord**. * **Key Difference:** In children, the sac is the cause; in adults, the fluid dynamics are the cause.

Q: Which among the following is the latest classification for Wilms tumor based on surgical and pathologic findings?

NWTS V. **Explanation:** **1. Why NWTS V is Correct:** The **National Wilms Tumor Study (NWTS)** group, now part of the **Children’s Oncology Group (COG)**, provides the gold-standard staging system used globally. **NWTS V** is the most recent iteration of this classification. It is a **surgical-pathologic staging system**, meaning the stage is determined based on findings during surgery and the subsequent histopathological examination of the specimen *before* the administration of chemotherapy (unlike the SIOP system used in Europe, which uses post-chemotherapy findings). **2. Why Other Options are Incorrect:** * **CIOS & CHIDC:** These are not recognized medical acronyms for staging systems in pediatric oncology. They are likely "distractor" options designed to test the candidate's specific knowledge of the NWTS nomenclature. * **SIOP (Société Internationale d’Oncologie Pédiatrique):** While not listed as an option, it is the other major classification system. It differs from NWTS V because it utilizes preoperative chemotherapy and stages the tumor based on post-treatment findings. **3. High-Yield Clinical Pearls for NEET-PG:** * **Most Common Presentation:** An asymptomatic abdominal mass (often discovered by a parent while bathing the child). * **NWTS V Staging Highlights:** * **Stage I:** Tumor limited to the kidney; excised intact. * **Stage II:** Tumor extends beyond the kidney but is completely excised. * **Stage III:** Residual non-hematogenous tumor confined to the abdomen (e.g., lymph node involvement or peritoneal spill). * **Stage IV:** Hematogenous metastases (most common site: **Lungs**). * **Stage V:** Bilateral renal involvement at diagnosis. * **Prognostic Factor:** The most important histological prognostic factor is the presence of **anaplasia** (unfavorable histology). * **Associated Syndromes:** WAGR, Denys-Drash, and Beckwith-Wiedemann syndromes.

Q: Which of the following congenital anomalies is more common in occurrence: isolated cleft palate, isolated cleft lip, or cleft lip and palate?

Cleft lip and palate. **Explanation:** The distribution of orofacial clefts follows a specific epidemiological pattern. **Cleft lip with or without cleft palate (CL±P)** is etiologically distinct from **isolated cleft palate (CP)**. Among these, the combination of **Cleft Lip and Palate (CLP)** is the most frequent presentation. **Why Option C is Correct:** Statistically, approximately **45-50%** of cases present as combined Cleft Lip and Palate. Isolated Cleft Palate accounts for about **30%**, and isolated Cleft Lip is the least common at approximately **20-25%**. This occurs because the embryological fusion of the primary palate (lip and premaxilla) and the secondary palate (hard and soft palate) are closely timed; a significant insult during primary palate formation often persists to affect the secondary palate. **Why Other Options are Incorrect:** * **Option A (Cleft Palate only):** While common, it occurs in roughly 1 in 1,500–2,000 births. It is more frequently associated with syndromic presentations (e.g., Pierre Robin Sequence) compared to CLP. * **Option B (Cleft Lip only):** This is the rarest of the three main types. It results from the failure of the maxillary process to fuse with the medial nasal process. * **Option D:** The occurrences are not equal; there is a clear hierarchy in frequency (CLP > CP > CL). **High-Yield Clinical Pearls for NEET-PG:** * **Gender Predilection:** Cleft Lip (+/- Palate) is more common in **males**, whereas isolated Cleft Palate is more common in **females**. * **Laterality:** Isolated cleft lip is most commonly **unilateral** and occurs more frequently on the **left side**. * **Rule of 10s (for Cheiloplasty):** 10 weeks of age, 10 lbs weight, and 10 g/dL Hemoglobin. * **Surgical Timing:** Cleft lip repair (Cheiloplasty) is usually done at **3 months**; Cleft palate repair (Palatoplasty) is done at **6–12 months** (before significant speech development).

Q: Apple peel bowel with loss of dorsal mesentery is a feature of which type of ileal atresia?

Type 3. **Explanation:** The correct answer is **Type 3b**. In the Grosfeld classification of intestinal atresia, Type 3 is divided into two subtypes, with Type 3b specifically characterized by the "Apple Peel" or "Christmas Tree" deformity. **1. Why Type 3 is correct:** Intestinal atresia is primarily caused by an **in-utero vascular accident** (ischemic insult). In **Type 3b**, a large mesenteric defect occurs due to the occlusion of the superior mesenteric artery. This results in: * A large gap between the proximal and distal bowel ends. * **Loss of dorsal mesentery.** * The distal small bowel survives by receiving retrograde blood supply from the ileocolic or right colic artery, causing it to coil around its tenuous blood supply, resembling an **apple peel**. **2. Why other options are incorrect:** * **Type 1:** Characterized by an intraluminal septum (web) with intact muscularis and mesentery. There is no gap or loss of mesentery. * **Type 2:** Two blind ends connected by a fibrous cord. The mesentery remains intact. * **Type 3a:** Features a V-shaped mesenteric defect with a complete separation of blind ends, but it lacks the characteristic spiral "apple peel" distal segment. * **Type 4:** Defined by multiple "string of beads" atresias. **Clinical Pearls for NEET-PG:** * **Most common site:** Ileum > Jejunum. * **Duodenal Atresia:** Unlike ileal atresia, this is caused by a failure of **recanalization** (not vascular insult) and is strongly associated with **Down Syndrome** and the "Double Bubble" sign. * **Prognosis:** Type 3b has a higher morbidity due to prematurity, low birth weight, and significantly shortened bowel length (Short Bowel Syndrome).

Q: Which of the following statements regarding Hirschsprung's disease are true?

Auerbach's plexus absent. ### Explanation: Hirschsprung’s Disease (Congenital Aganglionic Megacolon) **1. Why Option C is Correct:** Hirschsprung’s disease is characterized by the **absence of ganglion cells** in both the **Auerbach’s (myenteric)** and **Meissner’s (submucosal)** plexuses. This occurs due to the failure of neural crest cells to migrate cranio-caudally during the 5th to 12th weeks of gestation. The absence of these inhibitory neurons leads to a permanent state of contraction in the affected segment, resulting in functional intestinal obstruction. **2. Analysis of Incorrect Options:** * **Option A:** While rare "adult Hirschsprung" cases exist, it is primarily a **pediatric diagnosis**, typically presenting in the neonatal period with failure to pass meconium within 48 hours. * **Option B:** In this disease, the **aganglionic segment is narrow/contracted**. The **dilated segment** is actually the proximal, normal colon that undergoes hypertrophy to push stool past the obstruction. * **Option C vs D:** While total colonic aganglionosis can occur, involvement of the small intestine is extremely rare (Zuelzer-Wilson syndrome). Option C is the definitive pathological hallmark and the most accurate statement. **3. High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** Rectal Suction Biopsy (shows absence of ganglion cells and increased **Acetylcholinesterase** staining). * **Most Common Site:** Rectosigmoid region (Short-segment disease). * **Associated Condition:** Down Syndrome (Trisomy 21) is seen in ~10% of cases. * **Clinical Sign:** "Blast sign" or "Squirt sign" (explosive release of gas/stool on digital rectal exam). * **Surgical Procedures:** Duhamel, Soave, and Swenson procedures are the classic definitive repairs.

Q: A part of the adjacent intestine will be removed in which of the following conditions?

Enterogenous cyst. ***Enterogenous cyst*** - **Enterogenous (duplication) cysts** share the **muscularis propria** and blood supply with the adjacent intestine, making separate excision impossible. - **En-bloc resection** with adjacent bowel segment is mandatory to prevent complications like bowel perforation or ischemia. *Chylolymphatic cyst* - These are **lymphatic malformations** that develop independently of the intestinal wall and have separate vascular supply. - Can be **excised completely** without removing adjacent bowel as they don't share muscular layers with intestine. *Dermoid cyst* - **Teratomatous cysts** containing ectoderm-derived tissues that develop as separate entities from intestinal structures. - Have **independent blood supply** and capsule, allowing complete excision without bowel resection. *Mesothelial cyst* - Arise from **peritoneal mesothelium** and are located in the mesentery without intimate connection to bowel wall. - Can be **enucleated safely** as they don't share structural components with the adjacent intestine.

Question 1

Which of the following procedures is NOT performed in a case of Hirschsprung's disease?

Accepted Answer

Fasanella-Servat procedure

Answer

Swenson's operation

Answer

Duhamel's operation

Answer

Soave's operation

Question 2

What is the primary treatment for Hirschsprung's disease?

Accepted Answer

Excision of the aganglionic segment

Answer

Colostomy

Answer

Colectomy

Answer

Sodium chloride wash

Question 3

What is the standard treatment for congenital hydrocele?

Accepted Answer

Herniotomy

Answer

Excision of sac

Answer

Eversion of sac

Answer

Jaboulay procedure

Question 4

What is the treatment for recurrent rectal prolapse in children?

Accepted Answer

Ripstein's operation

Answer

Thiersh wiring

Answer

Digital reposition

Answer

Excision

Question 5

Which among the following is the latest classification for Wilms tumor based on surgical and pathologic findings?

Accepted Answer

NWTS V

Answer

CIOS

Answer

CHIDC

Answer

All of the above

Question 6

Which of the following congenital anomalies is more common in occurrence: isolated cleft palate, isolated cleft lip, or cleft lip and palate?

Accepted Answer

Cleft lip and palate

Answer

Cleft palate only

Answer

Cleft lip only

Answer

All of the above have equal occurrence

Question 7

Apple peel bowel with loss of dorsal mesentery is a feature of which type of ileal atresia?

Accepted Answer

Type 3

Answer

Type 1

Answer

Type 2

Answer

Type 4

Question 8

Which of the following statements regarding Hirschsprung's disease are true?

Accepted Answer

Auerbach's plexus absent

Answer

Sometimes found in adults

Answer

Dilated segment involved

Answer

Sometimes involves the small intestine

Question 9

A part of the adjacent intestine will be removed in which of the following conditions?

Accepted Answer

Enterogenous cyst

Answer

Chylolymphatic cyst

Answer

Dermoid cyst

Answer

Mesothelial cyst

Question 10

Which of the following is NOT true about hernia in children?

Accepted Answer

Conservative management is done until the patient is asymptomatic.

Answer

In children, hernia treatment is performed with herniotomy.

Answer

Absorbable mesh is not used.

Answer

Long-standing hernias increase the chances of incarceration.

Pediatric Surgery — MCQs

Pediatric Surgery — MCQs

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