Diseases of the Nose and Paranasal Sinuses Practice Questions

Q: A child has a retained disc battery in the nose. What is the most important consideration in the management?

The battery substance can leak and cause tissue damage.. **Explanation:** A retained disc battery (button battery) in the nasal cavity is a **surgical emergency**. Unlike inert foreign bodies, disc batteries cause rapid and severe tissue destruction through three primary mechanisms: 1. **Leakage of alkaline contents:** The corrosive substance (usually potassium or sodium hydroxide) causes liquefactive necrosis. 2. **Electrical current:** The moist mucosa completes an electrical circuit, leading to electrolysis and the generation of hydroxide ions at the negative pole. 3. **Pressure necrosis:** Direct physical pressure on the septum. **Analysis of Options:** * **Option A (Correct):** The leakage of caustic alkaline substances leads to rapid **liquefactive necrosis**, which can cause septal perforation within hours. This is the most critical pathological consideration. * **Option B:** While any foreign body carries a theoretical risk, tetanus is not the primary or immediate concern in nasal battery impaction. * **Option C:** While a specialist (ENT surgeon) should ideally remove it, the "most important consideration" in the management logic is understanding the **pathophysiology (tissue damage)** that necessitates urgent intervention. * **Option D:** **Contraindicated.** Instilling nasal drops or irrigation creates a moist environment that enhances the electrical circuit and accelerates the leakage of corrosive chemicals, worsening the injury. **NEET-PG High-Yield Pearls:** * **Emergency Status:** Nasal disc batteries must be removed immediately (within 2–4 hours) to prevent permanent septal perforation and saddle nose deformity. * **Radiology:** On X-ray, look for the **"Double-Contour" or "Step-off" sign** (lateral view) and the **"Halo sign"** (AP view) to differentiate a battery from a coin. * **Management Tip:** Never use oil or saline drops; keep the area dry until the battery is extracted.

Q: Which of the following conditions does not lead to septal perforation?

Rhinosporidiosis. **Explanation:** The correct answer is **Rhinosporidiosis** because it is a chronic granulomatous disease caused by *Rhinosporidium seeberi* that typically presents as a **friable, leafy, strawberry-like polypoid mass** arising from the nasal septum or turbinates. Crucially, Rhinosporidiosis is characterized by tissue proliferation rather than destruction; it does not cause necrosis or perforation of the septal cartilage. **Analysis of other options:** * **Syphilis:** Tertiary syphilis is a classic cause of septal perforation. It typically involves the **bony part** of the septum (unlike tuberculosis, which affects the cartilaginous part). * **Trauma:** This is the most common cause of septal perforation. It includes surgical trauma (post-SMR or Septoplasty), digital trauma (nose picking leading to "ulcer-perforation" cycle), or accidental injury. * **Septal Abscess:** An abscess leads to the collection of pus between the perichondrium and cartilage. This cuts off the blood supply to the avascular septal cartilage, leading to rapid **necrosis** and subsequent perforation. **Clinical Pearls for NEET-PG:** * **Most common site of perforation:** Anterior cartilaginous septum (Little’s area). * **Wegener’s Granulomatosis:** A high-yield systemic cause of "saddle nose" deformity and septal perforation. * **Cocaine Abuse:** Causes chronic vasoconstriction leading to ischemic necrosis of the septal cartilage. * **Occupational exposure:** Chrome workers (chromic acid fumes) are at high risk for painless septal perforations.

Q: What is the most common malignancy found in the maxillary sinus?

Squamous cell carcinoma. **Explanation:** **1. Why Squamous Cell Carcinoma (SCC) is correct:** Squamous cell carcinoma is the most common malignancy of the paranasal sinuses, accounting for approximately **80% of all cases**. Within the paranasal sinuses, the **maxillary sinus** is the most frequently involved site (about 70%). The Schneiderian membrane (pseudostratified ciliated columnar epithelium) lining the sinus undergoes squamous metaplasia due to chronic irritation or environmental triggers, eventually progressing to SCC. **2. Why other options are incorrect:** * **Adenoid Cystic Carcinoma:** This is the second most common malignancy of the maxillary sinus. It is known for its **perineural invasion** and "skip lesions," but it is significantly less frequent than SCC. * **Adenocarcinoma:** This is more commonly associated with the **ethmoid sinuses**, particularly in individuals with occupational exposure to **wood dust**. * **Mucoepidermoid Carcinoma:** While it is the most common malignant tumor of the salivary glands, it is a rare primary finding in the paranasal sinuses. **Clinical Pearls for NEET-PG:** * **Ohngren’s Line:** An imaginary line connecting the medial canthus to the angle of the mandible. Tumors **posterosuperior** to this line have a poorer prognosis due to early involvement of the skull base and orbit. * **Clinical Presentation:** Most patients present with "cheek swelling" or "unilateral nasal obstruction." A high-yield sign is **loosening of upper molar teeth** or ill-fitting dentures, indicating erosion of the floor of the sinus (alveolar process). * **Staging:** The T-staging of maxillary sinus tumors is unique as it relies heavily on the involvement of specific bony walls (e.g., Infrastructure vs. Suprastructure).

Q: Nasal septum perforation occurs in all of the following except?

Rhinosporidiosis. **Explanation:** Nasal septal perforation occurs when there is a full-thickness defect in the cartilaginous or bony septum, leading to communication between the two nasal cavities. **Why Rhinosporidiosis is the correct answer:** Rhinosporidiosis, caused by *Rhinosporidium seeberi*, typically presents as a **friable, leafy, strawberry-like polypoid mass** that is highly vascular and bleeds on touch. It primarily affects the mucous membrane of the septum or lateral wall but is characterized by **exophytic growth** rather than tissue destruction or necrosis. Therefore, it does **not** cause septal perforation. **Analysis of other options:** * **Tuberculosis:** Chronic granulomatous infections like TB cause "cold" necrosis of the tissue. It typically involves the **cartilaginous part** of the septum, leading to perforation. * **Nasal Surgery:** This is the **most common cause** of septal perforation (iatrogenic). It occurs during procedures like SMR (Submucous Resection) or Septoplasty if bilateral mucosal flaps are torn at corresponding points. * **Syphilis:** Tertiary syphilis (gumma) is a classic cause of septal perforation. Unlike TB, it characteristically involves the **bony septum** (vomer). **High-Yield Clinical Pearls for NEET-PG:** * **Most common site of perforation:** Anterior cartilaginous septum (Kiesselbach’s area). * **Syphilis vs. TB:** Syphilis affects the **bone**; Tuberculosis affects the **cartilage**. * **Wegener’s Granulomatosis:** Another high-yield cause of septal perforation and "saddle nose" deformity. * **Occupational causes:** Chronic exposure to chromium salts, arsenic, and cocaine snorting. * **Symptoms:** Small perforations often cause **whistling sounds** during breathing, while large ones cause crusting and epistaxis.

Q: The Killian term is used for which of the following polyps?

Antrochoanal polyp. **Explanation:** The correct answer is **Antrochoanal polyp**. **Why it is correct:** An Antrochoanal polyp (ACP) is also known as **Killian’s polyp**. It originates from the mucosa of the maxillary antrum (near the accessory ostium), passes through the natural or accessory ostium into the middle meatus, and extends posteriorly into the choana and nasopharynx. It is typically unilateral and seen more commonly in children and young adults. The term "Killian" is associated with this polyp because it traverses the ostium described by Gustav Killian. **Why the other options are wrong:** * **Ethmoidal polyp:** These are usually bilateral, multiple, and associated with allergies or chronic rhinosinusitis. They arise from the ethmoidal air cells and are not referred to as Killian polyps. * **Tonsillar cyst/Tonsillolith:** These are conditions of the oropharynx. A tonsillar cyst is a retention cyst of the tonsillar mucosa, and a tonsillolith is a calcareous concretion (stone) within a tonsillar crypt. Neither is related to nasal polyposis or the term Killian. **High-Yield Clinical Pearls for NEET-PG:** * **Components of ACP:** It has three parts—Antral (cystic), Nasal (soft), and Choanal (bulbous). * **Radiology:** On a CT scan, it shows an opaque maxillary sinus with a soft tissue mass extending into the choana. * **Management:** The treatment of choice is **FESS (Functional Endoscopic Sinus Surgery)** to remove the polyp and its antral attachment to prevent recurrence. * **Differential Diagnosis:** In a young male with a nasopharyngeal mass, always rule out Juvenile Nasopharyngeal Angiofibroma (JNA). * **Killian’s Dehiscence:** Do not confuse Killian’s polyp with Killian’s dehiscence, which is a weak area in the Pharyngeal Constrictor muscle (between thyropharyngeus and cricopharyngeus) where Zenker’s diverticulum occurs.

Q: Maxillary sinusitis due to viral etiology is:

Self limiting.. **Explanation:** **1. Why "Self-limiting" is correct:** Most cases of acute rhinosinusitis are viral in origin (commonly caused by Rhinoviruses, Influenza, or Parainfluenza). Viral maxillary sinusitis is a **self-limiting** condition, meaning it typically resolves on its own within 7 to 10 days without the need for antibiotic intervention. Management is primarily supportive, focusing on symptomatic relief through hydration, analgesics, and topical decongestants. **2. Why other options are incorrect:** * **Option A:** Bacterial sinusitis is suspected only if symptoms persist beyond 10 days, are severe (high fever >39°C), or show "double worsening" (getting better then suddenly worse). Treating viral cases as bacterial leads to unnecessary antibiotic resistance. * **Option C:** Viral sinusitis is generally **milder** than bacterial sinusitis. Bacterial infections (often *S. pneumoniae* or *H. influenzae*) are associated with more intense localized pain, purulent nasal discharge, and higher systemic toxicity. * **Option D:** Since A and C are incorrect, "All of the above" is invalid. **High-Yield Clinical Pearls for NEET-PG:** * **Most common sinus involved:** Maxillary sinus (in adults); Ethmoid sinus (in children). * **First-line treatment for Acute Bacterial Sinusitis:** Amoxicillin-Clavulanate (Augmentin). * **Radiology of choice:** CT Scan of Paranasal Sinuses (PNS) is the gold standard, though often not required for simple viral cases. * **Waters' View (X-ray):** Best for visualizing the maxillary sinus; look for an air-fluid level or opacification. * **Pott’s Puffy Tumor:** A rare but high-yield complication involving frontal bone osteomyelitis and forehead swelling.

Q: The Caldwell-Luc procedure is performed to access which anatomical space?

Maxillary sinus. **Explanation:** The **Caldwell-Luc procedure** (also known as radical antrostomy) is a surgical technique designed to access the **maxillary sinus** via the canine fossa. The procedure involves making an incision in the gingivolabial sulcus above the premolar teeth, elevating the periosteum, and creating a bony window in the anterior wall of the maxilla. **Why Maxillary Sinus is correct:** Historically, this was the gold standard for treating chronic maxillary sinusitis. Today, it is primarily used for removing irreversible mucosal disease, retrieving displaced tooth roots or foreign bodies, managing maxillary fractures, and providing a route for the **Denker’s procedure** or orbital decompression. **Why other options are incorrect:** * **Orbital cavity:** While the maxillary sinus floor forms the orbital floor, the primary access point for the orbit is usually via trans-orbital or endoscopic approaches. * **Nasal floor:** Access to the nasal floor is typically achieved through direct intranasal visualization or sublabial approaches (like the Midfacial Degloving), but not specifically via a Caldwell-Luc window. * **Submandibular space:** This is a neck space accessed via external cervical incisions, unrelated to the paranasal sinuses. **High-Yield Clinical Pearls for NEET-PG:** * **Indications:** Recurrent antrochoanal polyps, Oro-antral fistula closure, and as a prerequisite for the **Jorgensen’s approach** to the pterygopalatine fossa. * **Complication:** The most common complication is **cheek anesthesia or paresthesia** due to injury to the **infraorbital nerve**. * **Contraindication:** It is generally avoided in children (until permanent dentition erupts) to prevent damage to developing tooth buds.

Q: All of the following are part of Samter's triad except?

Anosmia. **Explanation:** **Samter’s Triad** (also known as Aspirin-Exacerbated Respiratory Disease or AERD) is a clinical condition characterized by a specific combination of three findings. 1. **Aspirin Sensitivity:** Patients experience bronchospasm or rhinitis after ingesting Aspirin or other NSAIDs (due to the inhibition of the COX-1 pathway, leading to an overproduction of pro-inflammatory leukotrienes). 2. **Asthma:** Typically adult-onset and often severe. 3. **Nasal Polyposis:** Characteristically bilateral and ethmoidal in origin. **Why Anosmia is the correct answer:** While **Anosmia** (loss of smell) is a very common *symptom* resulting from extensive nasal polyposis, it is not a formal component of the triad itself. In the context of NEET-PG, examiners frequently use "Anosmia" or "Atopy" as distractors for this classic triad. **Analysis of Incorrect Options:** * **Aspirin sensitivity:** A core component; these patients must avoid NSAIDs to prevent life-threatening bronchoconstriction. * **Asthma:** A core component; usually develops after the onset of rhinitis. * **Ethmoidal polyposis:** A core component; these polyps are typically eosinophilic and have a high recurrence rate after surgery. **Clinical Pearls for NEET-PG:** * **Pathophysiology:** It is not an IgE-mediated allergy but a metabolic abnormality of the arachidonic acid cascade (Leukotriene shift). * **Widal’s Triad:** Another name for Samter’s Triad. * **Treatment:** Management involves topical/systemic steroids, leukotriene receptor antagonists (e.g., Montelukast), endoscopic sinus surgery (FESS), and sometimes aspirin desensitization. * **Aspirin Burn:** A related term referring to the worsening of respiratory symptoms upon NSAID ingestion.

Q: A 4-year-old child presents with bleeding from the right side of the nose. He also has purulent discharge from the same side. What is the most likely diagnosis?

Foreign body. **Explanation:** The clinical presentation of **unilateral, foul-smelling, purulent nasal discharge** associated with **epistaxis** (bleeding) in a child is a classic "spotter" for a **Nasal Foreign Body (FB)**. 1. **Why Foreign Body is correct:** Children often insert small objects (beads, seeds, button batteries) into the nasal cavity. Over time, the object causes local mucosal irritation, pressure necrosis, and secondary infection. This leads to the characteristic triad: unilateral involvement, purulent/fetid discharge, and occasional bleeding from mucosal erosion. 2. **Why other options are incorrect:** * **Septal deviation/Sinusitis:** While sinusitis causes purulent discharge, it is rarely strictly unilateral in children without an underlying anatomical or obstructive cause. Isolated deviation is uncommon at age 4 and rarely causes foul discharge. * **Unilateral Choanal Atresia:** This typically presents with thick, mucoid discharge (inability to blow the nose) and nasal obstruction present since birth, rather than acute purulent/bloody discharge. * **Antrochoanal Polyp:** These are more common in older children/adolescents. While they cause unilateral obstruction, they typically present with mucoid discharge and a visible mass in the oropharynx or posterior choana, rather than acute blood-stained pus. **Clinical Pearls for NEET-PG:** * **Most common site:** Anterior to the middle turbinate or on the floor of the nose. * **Button Batteries:** These are surgical emergencies due to the risk of liquefactive necrosis and septal perforation within hours. **Do not** use saline drops as they accelerate electrolysis. * **Rhinolith:** A neglected foreign body can act as a nidus for calcium salt deposition, forming a "nasal stone." * **Management:** Use the "Parent’s Kiss" technique or removal via a Jobson-Horne probe/hook. Avoid forceps for smooth, round objects as they may push the FB into the airway.

Question 1

A child has a retained disc battery in the nose. What is the most important consideration in the management?

Accepted Answer

The battery substance can leak and cause tissue damage.

Answer

It can lead to tetanus.

Answer

Refer the child to a specialist for removal of the battery.

Answer

Instill nasal drops.

Question 2

Which of the following conditions does not lead to septal perforation?

Accepted Answer

Rhinosporidiosis

Answer

Syphilis

Answer

Trauma

Answer

Septal Abscess

Question 3

What is the most common malignancy found in the maxillary sinus?

Accepted Answer

Squamous cell carcinoma

Answer

Mucoepidermoid carcinoma

Answer

Adenoid cystic carcinoma

Answer

Adenocarcinoma

Question 4

Nasal septum perforation occurs in all of the following except?

Accepted Answer

Rhinosporidiosis

Answer

Tuberculosis

Answer

Nasal surgery

Answer

Syphilis

Question 5

What is the most common cause of epistaxis in children?

Accepted Answer

Habitual nose picking

Answer

Common cold

Answer

Nasal allergy

Answer

Polyp

Question 6

The Killian term is used for which of the following polyps?

Accepted Answer

Antrochoanal polyp

Answer

Ethmoidal polyp

Answer

Tonsillar cyst

Answer

Tonsillolith

Question 7

Maxillary sinusitis due to viral etiology is:

Accepted Answer

Self limiting.

Answer

Treated as bacterial sinusitis only.

Answer

More severe than bacterial sinusitis.

Answer

All of the above.

Question 8

The Caldwell-Luc procedure is performed to access which anatomical space?

Accepted Answer

Maxillary sinus

Answer

Orbital cavity

Answer

Nasal floor

Answer

Submandibular space

Question 9

All of the following are part of Samter's triad except?

Accepted Answer

Anosmia

Answer

Aspirin sensitivity

Answer

Asthma

Answer

Ethmoidal polyposis

Question 10

A 4-year-old child presents with bleeding from the right side of the nose. He also has purulent discharge from the same side. What is the most likely diagnosis?

Accepted Answer

Foreign body

Answer

Septal deviation with right maxillary sinusitis

Answer

Unilateral choanal atresia

Answer

Antrochoanal polyp

Diseases of the Nose and Paranasal Sinuses — MCQs

Diseases of the Nose and Paranasal Sinuses — MCQs

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