Pediatric Otolaryngology — MCQs

Pediatric Otolaryngology Indian Medical PG Practice Questions and MCQs

Question 51: A 2-year-old child undergoes tympanostomy tube placement for treatment of chronic bilateral serous otitis media. Which of the following complications is least likely to occur subsequent to surgery?

A. Chronic perforation
B. Cholesteatoma
C. Tympanosclerosis
D. Scarring of the external auditory canal (Correct Answer)

Explanation: **Explanation:** Tympanostomy tube (Grommet) placement is the most common surgical procedure in children for chronic otitis media with effusion. To identify the "least likely" complication, one must distinguish between complications affecting the **tympanic membrane (TM)** versus the **external auditory canal (EAC)**. **Why Option D is Correct:** **Scarring of the external auditory canal** is not a recognized complication of tympanostomy. The procedure involves a radial or curvilinear incision (myringotomy) specifically in the TM (usually the anteroinferior quadrant). Since the EAC skin is not incised or traumatized during standard tube placement, scarring or stenosis of the canal does not occur. **Analysis of Incorrect Options:** * **A. Chronic Perforation:** Occurs in about 1–2% of cases after the tube extrudes. The risk increases with long-term tubes (e.g., T-tubes). * **B. Cholesteatoma:** A rare but serious complication (approx. 0.5%). It can occur if squamous epithelium from the TM surface is accidentally implanted into the middle ear during insertion or if the TM invaginates through a persistent perforation. * **C. Tympanosclerosis:** The **most common** post-operative finding (up to 30–50%). It appears as chalky white patches on the TM due to hyaline and calcium deposits; it rarely affects hearing significantly. **NEET-PG High-Yield Pearls:** * **Most common complication:** Tympanosclerosis (Myringosclerosis). * **Most common "nuisance" complication:** Post-operative otorrhea (discharge). * **Ideal site for Myringotomy:** Anteroinferior quadrant (safest, as it is away from the ossicles and the chorda tympani nerve). * **Indication:** Bilateral effusion for >3 months with associated hearing loss (>20–30 dB).

Question 52: What is the most common cause of unilateral mucopurulent rhinorrhea in a child?

A. Antrochoanal polyp
B. Foreign body (Correct Answer)
C. Angiofibroma
D. Rhinosporidiosis

Explanation: **Explanation:** The clinical presentation of **unilateral, foul-smelling, mucopurulent nasal discharge** in a child is considered a **foreign body (FB) in the nose** until proven otherwise. Children often insert small objects (beads, seeds, toy parts) into the nasal cavity. If left undetected, these objects cause local mucosal irritation, secondary bacterial infection, and ulceration, leading to the characteristic purulent and often blood-tinged discharge. **Analysis of Options:** * **Foreign Body (Correct):** The classic triad is unilateral discharge, nasal obstruction, and fetid odor. It is the most common cause of these symptoms in the pediatric age group. * **Antrochoanal Polyp:** While it causes unilateral obstruction, the discharge is typically mucoid rather than purulent, and it is less common in very young children compared to adults. * **Angiofibroma:** This is a benign but aggressive tumor found almost exclusively in adolescent males. The hallmark symptom is profuse, recurrent **epistaxis**, not primary mucopurulent discharge. * **Rhinosporidiosis:** Caused by *Rhinosporidium seeberi*, it presents as a friable, leafy, strawberry-like vascular mass. While it can cause unilateral symptoms, it is geographically restricted (endemic to South India/Sri Lanka) and less common than a foreign body. **Clinical Pearls for NEET-PG:** * **Management:** Most nasal FBs can be removed in the OPD using a Jobson-Horne probe or Tilley’s forceps. However, **button batteries** are surgical emergencies due to the risk of liquefactive necrosis and septal perforation. * **Rhinolith:** A neglected foreign body can act as a nucleus for calcium and magnesium salt deposition, forming a "nasal stone" or rhinolith. * **Differential Diagnosis:** In neonates, unilateral symptoms may suggest unilateral choanal atresia, though this typically presents with thick mucoid discharge rather than foul-smelling purulence.

Question 53: A neonate with congenital heart disease (CHD) presents with cyanosis that is exacerbated by breathing and improved by crying. What is the most likely diagnosis?

A. Bilateral choanal atresia (Correct Answer)
B. Diaphragmatic hernia
C. Genitourinary defects
D. Coloboma

Explanation: **Explanation:** The clinical presentation described is a classic "textbook" scenario for **Bilateral Choanal Atresia**. **1. Why Option A is Correct:** Neonates are **obligate nasal breathers** until approximately 4–6 weeks of life. In bilateral choanal atresia, the posterior nasal passage is anatomically obstructed (bony or membranous). * **Cyanosis while feeding/breathing:** When the infant attempts to breathe through the nose (the natural instinct), the airway is blocked, leading to respiratory distress and cyanosis. * **Improvement with crying:** When the infant cries, they switch to **oral breathing**, which bypasses the nasal obstruction and allows for adequate oxygenation, leading to the resolution of cyanosis. This "cyclical cyanosis" is pathognomonic. **2. Why Other Options are Incorrect:** * **Option B (Diaphragmatic Hernia):** Presents with respiratory distress and a scaphoid abdomen, but cyanosis typically *worsens* with crying due to increased intrathoracic pressure and lung compression. * **Options C & D (Genitourinary defects/Coloboma):** These are components of the **CHARGE syndrome**, of which Choanal Atresia is a major feature. However, they are associated anomalies and do not directly cause the specific respiratory symptoms described. **Clinical Pearls for NEET-PG:** * **Diagnosis:** Failure to pass a 6F or 8F suction catheter through the nose into the oropharynx. * **Gold Standard Investigation:** CT scan (shows narrowing of the posterior choanae). * **Immediate Management:** Use of a **McGovern nipple** (an oral airway) to maintain a patent oral passage. * **CHARGE Association:** **C**oloboma, **H**eart defects, **A**tresia choanae, **R**etardation of growth, **G**enitourinary anomalies, **E**ar abnormalities.

Question 54: Which of the following treatments is indicated for Juvenile Onset Recurrent Respiratory Papillomatosis?

A. Bevacizumab (Correct Answer)
B. Aerosol Cidofovir
C. Interferon Beta
D. Steroids

Explanation: **Juvenile-Onset Recurrent Respiratory Papillomatosis (JORRP)** is a challenging condition caused by HPV types 6 and 11, characterized by benign but aggressive warty growths in the airway. ### **Explanation of the Correct Answer** **A. Bevacizumab:** This is a monoclonal antibody against **Vascular Endothelial Growth Factor (VEGF)**. Since respiratory papillomas are highly vascular lesions, VEGF is overexpressed in the underlying stroma. Bevacizumab (administered either systemically or via intralesional injection) has emerged as a breakthrough adjuvant therapy. It reduces the vascularity of the lesions, significantly increasing the interval between surgical debridements and, in some cases, leading to complete remission. ### **Analysis of Incorrect Options** * **B. Aerosol Cidofovir:** While **intralesional** Cidofovir (an antiviral) was historically the most common adjuvant, **aerosolized** administration is not a standard or effective delivery method for JORRP. Furthermore, concerns regarding its potential carcinogenicity have limited its use. * **C. Interferon Beta:** Interferon-Alpha (not Beta) was previously used to slow the rate of regrowth. However, it is rarely used today due to significant systemic side effects (flu-like symptoms, depression) and the superior efficacy of newer agents. * **D. Steroids:** Steroids have no role in treating the underlying viral pathology or the growth of papillomas; they are only used acutely if there is post-operative airway edema. ### **High-Yield Clinical Pearls for NEET-PG** * **Etiology:** HPV 6 and 11 (most common). HPV 16 and 18 are associated with malignant transformation. * **Gold Standard Treatment:** Surgical excision, preferably using a **CO2 Laser** or **Microdebrider**. The goal is to maintain the airway, not necessarily "cure" (as the virus remains in the latent mucosa). * **Triad of Symptoms:** Hoarseness (most common), stridor, and respiratory distress. * **Key Indicator for Adjuvant Therapy:** If the patient requires >4 surgeries per year or has distal tracheal spread. * **Vaccination:** The Quadrivalent/Nonavalent HPV vaccine is the best preventive measure.

Question 55: In acute sinusitis, which sinus is more commonly involved in children?

A. Maxillary
B. Sphenoid
C. Ethmoid (Correct Answer)
D. Frontal

Explanation: **Explanation:** The correct answer is **Ethmoid (Option C)**. In children, the **ethmoid sinus** is the most commonly involved sinus in acute sinusitis. This is primarily due to the developmental anatomy of the paranasal sinuses. The ethmoid and maxillary sinuses are the only ones present at birth. However, the ethmoid sinus is the most well-developed at birth and is the first to undergo significant pneumatization. Because the ethmoid cells are small and have narrow drainage pathways (the ostiomeatal complex), they are highly susceptible to obstruction and infection following a viral upper respiratory tract infection. **Analysis of Incorrect Options:** * **Maxillary (Option A):** While the maxillary sinus is present at birth, it is small and does not reach the level of the nasal floor until age 7–8. It is the second most common sinus involved in children but becomes the most commonly involved sinus in **adults**. * **Sphenoid (Option B):** The sphenoid sinus starts to pneumatize around age 3–5 and is not fully developed until adolescence. Isolated sphenoid sinusitis is rare in children. * **Frontal (Option C):** The frontal sinus is the last to develop. It is clinically and radiologically absent at birth and only begins to appear around age 6–7, reaching full size in late adolescence. Therefore, frontal sinusitis is rare in young children. **Clinical Pearls for NEET-PG:** * **Developmental Timeline:** Ethmoid (Birth) → Maxillary (Birth) → Sphenoid (3–5 years) → Frontal (6–7 years). * **Complications:** Acute ethmoiditis in children is the most common cause of **orbital cellulitis** (due to the thinness of the *lamina papyracea*). * **Adults vs. Children:** Remember the "E before M" rule for children (Ethmoid first) and "M before E" for adults (Maxillary first).

Question 56: A coin is lodged in the esophagus of an asymptomatic 3-year-old female child. What is the appropriate treatment option?

A. Immediate endoscopic removal
B. Wait for 48 hours
C. Endoscopic removal within 24 hours (Correct Answer)
D. Dislodge the coin into the stomach using a Ryle's tube

Explanation: **Explanation:** The management of esophageal foreign bodies (FBs) depends on the type of object, the patient’s symptoms, and the location of the impaction. **1. Why Option C is Correct:** In an **asymptomatic** child with a blunt object (like a coin) lodged in the esophagus, the standard of care is observation for a short period followed by **endoscopic removal within 24 hours**. Coins often pass spontaneously into the stomach within this timeframe. However, if the coin remains in the esophagus beyond 24 hours, the risk of mucosal ulceration, pressure necrosis, and potential perforation increases significantly, necessitating intervention. **2. Why Other Options are Incorrect:** * **Option A:** Immediate removal is reserved for **symptomatic** patients (drooling, respiratory distress), **sharp objects**, or **button batteries** (which cause rapid chemical burns). * **Option B:** Waiting for 48 hours is too long; the risk of esophageal injury and stricture formation increases after the 24-hour mark. * **Option C:** Dislodging the coin blindly using a Ryle’s tube or bougie is contraindicated as it can cause esophageal trauma or lead to accidental tracheal aspiration. **Clinical Pearls for NEET-PG:** * **Most common site of impaction:** Cricopharyngeus (Upper Esophageal Sphincter). * **Radiology Tip:** On X-ray (AP view), a coin in the **esophagus** appears as a **circular disk** (coronal plane), whereas a coin in the **trachea** appears as a **vertical line** (sagittal plane). * **Emergency Intervention:** Always required for **Button Batteries** (due to liquefactive necrosis) and **Sharp objects** (risk of perforation).

Question 57: A child presents with unilateral, foul smelling nasal discharge. What is the most probable cause?

A. Acute sinusitis
B. Foreign body (Correct Answer)
C. Rhinolith
D. Nasal synechiae

Explanation: **Explanation:** The classic clinical triad of **unilateral, foul-smelling, purulent nasal discharge** in a child is considered a **foreign body (FB) in the nose** until proven otherwise. Children frequently insert small objects (beads, seeds, foam) into the nasal cavity. Over time, these objects cause local mucosal irritation, secondary bacterial infection, and tissue necrosis, leading to the characteristic malodorous discharge. **Analysis of Options:** * **Foreign Body (Correct):** This is the most common cause of unilateral fetid discharge in the pediatric age group. The diagnosis is clinical, and management involves prompt removal to prevent aspiration. * **Acute Sinusitis:** While it causes purulent discharge, it is typically **bilateral** and often preceded by an upper respiratory tract infection. Unilateral presentation is rare in children unless there is an underlying anatomical obstruction or dental infection. * **Rhinolith:** A rhinolith is a "nasal stone" formed by the deposition of calcium and magnesium salts around a long-standing neglected foreign body. While it also causes unilateral foul discharge, it is more common in **adults** or older children due to the time required for mineralization. * **Nasal Synechiae:** These are adhesions between the nasal septum and turbinates, usually following trauma or surgery. They cause nasal obstruction but do not typically present with foul-smelling discharge. **High-Yield Clinical Pearls for NEET-PG:** * **Button Batteries:** These are surgical emergencies. They can cause liquefactive necrosis and septal perforation within hours due to electrical current and chemical leakage. **Do not** instill nasal drops if a battery is suspected. * **Radiology:** Most nasal FBs are radiolucent; X-rays are only helpful for metallic objects or rhinoliths. * **Management:** The "Parent’s Kiss" technique can be used for initial removal, or a Jobson-Horne probe/hook can be used under direct vision. Avoid using forceps for smooth, round objects as they may slip and be aspirated.

Question 58: Bilateral choanal atresia can cause significant airway distress in a newborn because of which of the following reasons?

A. Infants with choanal atresia usually have concomitant cardiac anomalies.
B. Infants are initially obligate nasal breathers. (Correct Answer)
C. The neonatal larynx is smaller and collapses easily.
D. Neonates have low oxygen reserves.

Explanation: ### Explanation **1. Why Option B is Correct:** The physiological hallmark of a newborn is that they are **obligate nasal breathers** until approximately 4–6 months of age. This is due to the anatomical position of the neonatal larynx, which is situated higher in the neck (C3-C4 level). The epiglottis is in close proximity to the soft palate, creating a seal that facilitates simultaneous breathing and suckling but forces air to travel primarily through the nasal passage. In **bilateral choanal atresia**, the posterior nasal airway is obstructed by bone or membrane; since the infant cannot instinctively switch to oral breathing, it leads to cyclic cyanosis (the infant turns blue when quiet/feeding and pink when crying, as crying forces the mouth open). **2. Why the Other Options are Incorrect:** * **Option A:** While choanal atresia is associated with **CHARGE syndrome** (Coloboma, Heart defects, Atresia choanae, Retarded growth, Genital hypoplasia, Ear anomalies), the *immediate* cause of airway distress is the mechanical obstruction in a nasal breather, not the cardiac status. * **Option C:** While the neonatal larynx is indeed smaller and the cartilages are more compliant (as seen in laryngomalacia), this does not explain why nasal obstruction specifically causes such severe distress in this population compared to adults. * **Option D:** Although neonates have higher oxygen consumption and lower functional residual capacity, this is a general physiological trait and not the specific reason why choanal atresia is a neonatal emergency. **3. Clinical Pearls for NEET-PG:** * **Diagnosis:** Failure to pass a 6F or 8F suction catheter through the nose into the nasopharynx. * **Investigation of Choice:** Non-contrast CT scan of the paranasal sinuses (shows narrowing of the posterior choana and thickening of the vomer). * **Immediate Management:** Insertion of a **McGovern nipple** or an oropharyngeal airway to maintain an oral air passage. * **Membranous vs. Bony:** Historically cited as 90% bony, but recent studies suggest a mixed bony-membranous composition is more common.

Question 59: What is the initial management for a newborn presenting with stridor attributed to laryngomalacia?

A. Observation and supportive care (Correct Answer)
B. Urgent surgical intervention
C. Corticosteroid therapy
D. Surgical correction after the age of two years

Explanation: ### Explanation **Laryngomalacia** is the most common congenital anomaly of the larynx and the leading cause of congenital stridor in infants. It is characterized by the collapse of supraglottic structures (epiglottis, arytenoids) into the airway during inspiration. **Why Option A is Correct:** The vast majority (over 90%) of laryngomalacia cases are **mild to moderate** and self-limiting. The stridor typically appears at 2 weeks of age, peaks at 6–9 months, and resolves spontaneously by 18–24 months as the laryngeal cartilage matures and the airway widens. Therefore, the initial management is **observation, parental reassurance, and supportive care** (such as upright positioning during feeding). **Why Other Options are Incorrect:** * **Option B:** Urgent surgery is reserved only for "Severe Laryngomalacia" (approx. 10% of cases) presenting with cyanosis, apnea, failure to thrive, or cor pulmonale. * **Option C:** Corticosteroids are not the primary treatment for laryngomalacia; they are more relevant in inflammatory conditions like croup or subglottic hemangioma. However, treating comorbid **Gastroesophageal Reflux (GERD)** with PPIs is often necessary as reflux exacerbates laryngeal edema. * **Option D:** If surgery (Supraglottoplasty) is required, it is performed when symptoms are severe, regardless of age. Waiting until age two is counterintuitive, as the condition usually resolves naturally by then. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Presentation:** Inspiratory stridor that **worsens** when the infant is supine, crying, or feeding, and **improves** when prone. * **Diagnostic Finding:** Flexible laryngoscopy shows "Omega-shaped" epiglottis and short aryepiglottic folds. * **Associated Condition:** GERD is present in up to 80% of these patients and must be managed to improve outcomes.

Question 60: What is the next step in the management of a child with a foreign body in the bronchus?

A. Rigid bronchoscopy (Correct Answer)
B. Chest X-ray
C. Flexible endoscopy
D. Direct laryngoscopy

Explanation: **Explanation:** The definitive management for a foreign body (FB) in the bronchus is **Rigid Bronchoscopy**. In pediatric patients, this is considered the gold standard because it provides a stable airway, allows for excellent visualization, and features a wide lumen that accommodates various grasping forceps while maintaining ventilation. **Why the other options are incorrect:** * **Chest X-ray:** While often the first investigation performed, it is not the "next step in management" when a clinical suspicion of aspiration exists. Up to 25% of FB cases show a normal X-ray (especially if the object is radiolucent). A negative X-ray never rules out a foreign body; if the history is suggestive, you must proceed to bronchoscopy. * **Flexible Endoscopy:** While useful for diagnostic purposes in adults or for peripheral lung lesions, it is generally avoided in pediatric FB removal because it can compromise the small airway and lacks the stability required to safely extract sharp or bulky objects. * **Direct Laryngoscopy:** This is used to visualize the larynx and vocal cords. It is insufficient for bronchial foreign bodies as it does not reach the lower respiratory tract. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site:** Right main bronchus (due to it being wider, shorter, and more vertical than the left). * **Classic Triad:** Sudden onset wheezing, coughing, and diminished breath sounds (present in only ~60% of cases). * **X-ray findings:** The most common finding is **obstructive emphysema** (air trapping) on the affected side, followed by atelectasis. * **Vegetable FB:** These are the most dangerous as they swell (hygroscopic) and cause chemical pneumonitis (vegetal bronchitis).

Practice by Chapter

Congenital Anomalies of the Ear

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Pediatric Hearing Loss

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Otitis Media in Children

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Pediatric Sinusitis

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Pediatric Sleep Apnea

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Stridor in Children

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Congenital Airway Anomalies

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Foreign Body Management

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Pediatric Head and Neck Masses

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Pediatric Tracheostomy

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Pediatric Voice Disorders

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Pierre Robin Sequence and Airway Management

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