Diseases of the Nose and Paranasal Sinuses Practice Questions

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.

Q: The dotted line has clinical significance in case of which of the following conditions?

Maxillary carcinoma. ***Maxillary carcinoma*** - **Ohngren's line** (dotted line from **medial canthus** to **angle of mandible**) is crucial for **staging maxillary carcinoma** and determining prognosis. - Tumors **above Ohngren's line** have a **worse prognosis** due to proximity to **orbit, skull base, and intracranial structures**. *Maxillary sinusitis* - **Inflammatory condition** of the maxillary sinus that does not require **anatomical staging** using Ohngren's line. - Diagnosis relies on **clinical symptoms** and **imaging findings** rather than anatomical reference lines. *Mandibular fracture* - Involves the **lower jaw** and is assessed using different **anatomical landmarks** and **fracture classification systems**. - **Ohngren's line** is specific to **maxillary anatomy** and has no relevance in mandibular trauma evaluation. *Maxillary fracture* - Classified using **Le Fort classification system** based on **fracture patterns** and **anatomical structures** involved. - **Ohngren's line** is not used for **trauma assessment** but specifically for **oncological staging** of maxillary carcinoma.

Q: A 70-year-old patient presents with a history of epistaxis. On examination, the blood pressure is 200/100 mm Hg. No active nasal bleeding is noted at the time of examination. What is the next step in management?

Observation with blood pressure management. ### Explanation **1. Why Option A is Correct:** The patient is currently stable with **no active nasal bleeding**. The primary clinical finding is severe hypertension (200/100 mm Hg), which is a common systemic cause of epistaxis, particularly in the elderly. In the absence of active hemorrhage, invasive procedures like packing or ligation are not indicated. The immediate priority is to **monitor the patient** and **control the blood pressure** to prevent a recurrence of epistaxis or other hypertensive emergencies (e.g., stroke). **2. Why Other Options are Incorrect:** * **Options C & D (Nasal Packing):** Anterior or posterior nasal packing is a traumatic procedure used to tamponade *active* bleeding that cannot be controlled by local pressure or cautery. Since there is no active bleeding, packing would cause unnecessary mucosal trauma and patient discomfort. * **Option B (Internal Maxillary Artery Ligation):** This is a surgical intervention reserved for intractable, life-threatening epistaxis that fails to respond to conservative measures (packing/cautery). It is never a first-line treatment, especially in a non-bleeding patient. **3. Clinical Pearls for NEET-PG:** * **Woodruff’s Plexus:** Located in the posterior part of the nasal cavity (below the posterior end of the inferior turbinate); it is the most common site for **posterior epistaxis** in elderly hypertensive patients. * **Little’s Area (Kiesselbach’s Plexus):** The most common site for **anterior epistaxis** (90% of cases), usually seen in children and young adults. * **First-line Management:** For active bleeding, the initial step is **Trotter’s Method** (patient sits up, leans forward, and pinches the soft part of the nose for 10–15 minutes). * **Most common artery** involved in epistaxis: **Sphenopalatine artery** (the "Artery of Epistaxis").

Q: Improvement in nasal patency by retracting the lateral part of the cheek and thus testing the vestibular component of the nose is called what?

Cottle's test. ### Explanation **Correct Answer: B. Cottle’s test** **1. Why Cottle’s Test is Correct:** Cottle’s test is a clinical maneuver used to evaluate **nasal valve stenosis**. The nasal valve (specifically the internal nasal valve) is the narrowest part of the nasal airway, bounded by the caudal edge of the upper lateral cartilage, the septum, and the inferior turbinate. * **Mechanism:** The clinician uses one or two fingers to pull the patient's cheek laterally, away from the midline. * **Interpretation:** If this action opens the valve and the patient reports a significant improvement in nasal patency (easier breathing), the test is **positive**, indicating that the nasal valve is the primary site of obstruction. **2. Why the Other Options are Incorrect:** * **A. Epley’s maneuver:** This is a repositioning maneuver used to treat **Benign Paroxysmal Positional Vertigo (BPPV)** by moving canaliths from the posterior semicircular canal back into the utricle. * **C. Schwartz maneuver:** This is not a standard ENT clinical test. (Note: *Schwartz sign* refers to the "flamingo flush" seen on the promontory in active Otosclerosis). * **D. Helmich (Heimlich) maneuver:** This is an emergency procedure used to treat **upper airway obstruction** caused by a foreign body (choking). **3. High-Yield Clinical Pearls for NEET-PG:** * **Internal Nasal Valve:** The narrowest part of the entire respiratory tract. The normal angle is **10–15 degrees**. * **Components of the Nasal Valve:** Septum, Upper Lateral Cartilage (ULC), and the anterior end of the Inferior Turbinate. * **Modified Cottle’s Test:** Performed using a small ear speculum or a cotton-tipped applicator to support the ULC internally; it is considered more specific than the standard cheek retraction. * **Surgical Management:** If Cottle's test is positive, the patient may require a **functional rhinoplasty** (e.g., spreader grafts) rather than a simple septoplasty.

Q: What is true about nasal myiasis?

Results from the ova of the fly Chrysomia.. ### Explanation **Nasal Myiasis** (also known as Peenash) is a condition caused by the infestation of the nasal cavity by the larvae (maggots) of flies. **1. Why Option B is Correct:** The primary causative agent is the fly **Chrysomya bezziana**. The female fly deposits its **ova (eggs)** in the nasal cavity, usually attracted by the foul-smelling discharge associated with conditions like atrophic rhinitis or leprosy. These eggs hatch into larvae (maggots) within 8–24 hours, which then burrow into the mucous membrane and destroy surrounding tissues, including bone and cartilage. **2. Analysis of Incorrect Options:** * **Option A:** It is most commonly associated with **Atrophic Rhinitis** (due to the characteristic foul odor or *ozaena*) and leprosy, rather than ethmoidal polyps. * **Option C:** Treatment involves the instillation of **Chloroform and Turpentine oil** (in a 1:4 ratio) to stun or kill the maggots, followed by manual removal. Saline instillation is ineffective for killing larvae. * **Option D:** Nasal myiasis **can cause death**. If left untreated, the maggots can penetrate the skull base (cribriform plate), leading to meningitis, brain abscess, or massive hemorrhage from the erosion of major blood vessels. **3. High-Yield Clinical Pearls for NEET-PG:** * **Classic Presentation:** Foul-smelling nasal discharge, epistaxis, and the sensation of "something moving" inside the nose. * **Management:** Chloroform-turpentine mixture is the gold standard for immobilization. Systemic **Ivermectin** is now frequently used as an effective medical adjunct. * **Complications:** Palatal perforation, septal destruction, and orbital cellulitis. * **Prophylaxis:** Improving hygiene and treating the underlying atrophic rhinitis.

Q: Lines of Sebileau pass through which structures?

Floor of orbit and maxillary antrum. **Explanation:** The **Lines of Sebileau** (also known as the horizontal planes of Sebileau) are anatomical landmarks used to classify the location and spread of maxillary tumors. Sebileau divided the midface into three distinct regions using two horizontal parallel lines: 1. **The Superior Line:** Passes through the **floor of the orbit**. 2. **The Inferior Line:** Passes through the floor of the **maxillary antrum** (maxillary sinus). These lines divide the maxilla into the **Suprastructure** (above the floor of the orbit), the **Mesostructure** (between the orbit and the maxillary floor), and the **Infrastructure** (below the floor of the maxillary sinus, involving the alveolar process). **Analysis of Options:** * **Option A (Correct):** Accurately identifies the two anatomical boundaries (orbital floor and maxillary sinus floor) that define the vertical extent of the maxillary complex in Sebileau’s classification. * **Option B:** Incorrect; while the floor of the nasal cavity is roughly at the same level as the maxillary floor, the superior boundary must be the orbit. * **Option C:** Incorrect; these represent the superior and medial boundaries, not the two horizontal planes. * **Option D:** Incorrect; the roof of the mouth (hard palate) is part of the infrastructure, not the defining line itself. **Clinical Pearls for NEET-PG:** * **Öhngren’s Line:** A related high-yield concept. It is an imaginary line connecting the medial canthus of the eye to the angle of the mandible. Tumors located **posterosuperior** to this line have a poorer prognosis compared to **anteroinferior** tumors. * **Clinical Significance:** Sebileau’s lines help surgeons determine the surgical approach (e.g., partial vs. total maxillectomy) based on which "structure" the malignancy occupies.

Q: What is the most definitive diagnostic method for sinusitis?

Nasal endoscopy. **Explanation:** The diagnosis of sinusitis has evolved from traditional clinical methods to objective visualization. **Nasal Endoscopy (Diagnostic Nasal Endoscopy - DNE)** is currently considered the most definitive diagnostic tool because it allows for direct visualization of the middle meatus and the osteomeatal complex—the "final common pathway" for drainage of the frontal, maxillary, and anterior ethmoid sinuses. It can identify subtle signs like purulent discharge, edema, and polyps that are often missed on anterior rhinoscopy. **Analysis of Options:** * **X-ray Paranasal Sinuses (Option A):** Once common (e.g., Water’s view), it is now largely obsolete due to high false-negative rates and poor visualization of the ethmoid air cells. * **Proof Puncture (Option B):** Also known as antral lavage, it was historically the "gold standard" for maxillary sinusitis. However, it is invasive, carries risks (like air embolism), and is diagnostic only for the maxillary sinus, not the entire sinus complex. * **Transillumination Test (Option D):** A primitive bedside test with very low sensitivity and specificity; it is unreliable due to variations in bone thickness and soft tissue. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard for Imaging:** While endoscopy is the definitive clinical diagnostic tool, **Non-Contrast CT (NCCT) of the Paranasal Sinuses** is the "Gold Standard" for evaluating anatomy and extent of disease, especially before surgery (FESS). * **First-line Investigation:** Clinical diagnosis remains the first step, but DNE is the preferred objective method in a specialist setting. * **Middle Meatus:** This is the most critical area to examine during endoscopy, as it is the primary site for drainage of most major sinuses.

Question 1

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 2

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

Accepted Answer

Anosmia

Answer

Aspirin sensitivity

Answer

Asthma

Answer

Ethmoidal polyposis

Question 3

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

Question 4

During extraction of an upper first molar, the mesiobuccal root is missing and suspected to have been pushed into the maxillary sinus. To classify a chronic oral-antral communication, what time duration is acceptable?

Accepted Answer

14 days

Answer

7 days

Answer

21 days

Answer

28 days

Question 5

The dotted line has clinical significance in case of which of the following conditions?

Accepted Answer

Maxillary carcinoma

Answer

Maxillary sinusitis

Answer

Mandibular fracture

Answer

Maxillary fracture

Question 6

A 70-year-old patient presents with a history of epistaxis. On examination, the blood pressure is 200/100 mm Hg. No active nasal bleeding is noted at the time of examination. What is the next step in management?

Accepted Answer

Observation with blood pressure management

Answer

Internal maxillary artery ligation

Answer

Anterior and posterior nasal pack

Answer

Anterior nasal pack

Question 7

Improvement in nasal patency by retracting the lateral part of the cheek and thus testing the vestibular component of the nose is called what?

Accepted Answer

Cottle's test

Answer

Epley's maneuver

Answer

Schwartz maneuver

Answer

Helmich maneuver

Question 8

What is true about nasal myiasis?

Accepted Answer

Results from the ova of the fly Chrysomia.

Answer

Commonly occurs in patients with ethmoidal polyps.

Answer

Treated by nasal saline instillation.

Answer

Cannot cause death of the patient.

Question 9

Lines of Sebileau pass through which structures?

Accepted Answer

Floor of orbit and maxillary antrum

Answer

Floor of nasal cavity and maxillary antrum

Answer

Floor of orbit and nasal cavity

Answer

Floor of orbit and roof of mouth

Question 10

What is the most definitive diagnostic method for sinusitis?

Accepted Answer

Nasal endoscopy

Answer

X-ray of paranasal sinuses

Answer

Proof puncture

Answer

Transillumination test

Diseases of the Nose and Paranasal Sinuses — MCQs

Diseases of the Nose and Paranasal Sinuses — MCQs

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