Rhinology — MCQs

Rhinology Indian Medical PG Practice Questions and MCQs

Question 181: Woody induration of rhinoscleroma is initially seen at which stage?

A. Catarrhal stage
B. Strophic stage
C. Granulomatous stage (Correct Answer)
D. Cicatricial stage

Explanation: **Rhinoscleroma** is a chronic granulomatous disease caused by *Klebsiella rhinoscleromatis* (Frisch bacillus). It typically progresses through four distinct clinical stages. ### **Explanation of the Correct Answer** The **Granulomatous stage** (Stage 3) is characterized by the formation of painless, non-ulcerating nodules in the nasal mucosa. These nodules coalesce to form a dense, hard mass, leading to the classic **"woody induration"** of the nose. This stage is histologically significant for the presence of **Mikulicz cells** (foamy macrophages containing the bacilli) and **Russell bodies** (eosinophilic inclusion bodies). ### **Analysis of Incorrect Options** * **A. Catarrhal stage:** This is the initial stage, presenting like a common cold with foul-smelling purulent nasal discharge and crusting. There is no induration here. * **B. Atrophic stage:** This stage mimics Atrophic Rhinitis, characterized by foul-smelling crusts and a roomy nasal cavity. The tissues are thinning rather than hardening. * **D. Cicatricial stage:** This is the final stage of healing by fibrosis. While it causes severe stenosis (e.g., of the nares or nasopharynx) and adhesions, the characteristic "woody" granulomatous mass is a feature of the preceding stage. ### **NEET-PG High-Yield Pearls** * **Organism:** *Klebsiella rhinoscleromatis* (Gram-negative, diplobacillus). * **Biopsy Findings:** Mikulicz cells (diagnostic) and Russell bodies (non-specific). * **Clinical Sign:** "Hebra Nose" (widening of the nasal bridge due to granuloma). * **Treatment of Choice:** Streptomycin and Tetracycline (or Ciprofloxacin) for long durations (weeks to months). * **Site:** It most commonly starts in the subepithelial layer of the anterior nares/nasal septum.

Question 182: What is the most appropriate management for an antrochoanal polyp in children?

A. Caldwell-Luc operation
B. Intra-nasal polypectomy (Correct Answer)
C. Corticosteroids
D. Wait and watch

Explanation: **Explanation:** An **Antrochoanal Polyp (Killian’s Polyp)** is a solitary, benign growth that originates from the mucosa of the maxillary sinus, exits through the accessory ostium, and extends into the choana and nasopharynx. **Why Intra-nasal Polypectomy is the correct answer:** In the pediatric age group, the primary goal is to remove the polyp while preserving the developing permanent dentition and the growth of the maxilla. **Intra-nasal polypectomy** (often performed via Functional Endoscopic Sinus Surgery - FESS) is the treatment of choice. It allows for the removal of the polyp and its stalk through the natural or accessory ostium with minimal morbidity. **Why other options are incorrect:** * **Caldwell-Luc operation:** This involves an incision in the gingivolabial sulcus to enter the maxillary sinus. It is **contraindicated in children** (usually under age 17) because it can damage the roots of unerupted permanent teeth and interfere with maxillary bone growth. * **Corticosteroids:** While steroids are effective for ethmoidal (allergic) polyps, antrochoanal polyps are typically non-allergic and do not respond significantly to medical management. Surgery is definitive. * **Wait and watch:** Antrochoanal polyps cause progressive nasal obstruction and can lead to sinusitis or sleep apnea; they do not regress spontaneously. **High-Yield Clinical Pearls for NEET-PG:** * **Origin:** Most commonly the posterior wall/floor of the **Maxillary sinus**. * **Radiology:** On X-ray (Water’s view), it shows opacification of the maxillary sinus. On CT, it shows a "dumbbell-shaped" mass extending from the sinus to the choana. * **Recurrence:** The most common cause of recurrence is failure to remove the **intramural (sinus) component** of the polyp. * **Differential Diagnosis:** In a male child with a nasopharyngeal mass, always rule out Juvenile Nasopharyngeal Angiofibroma (JNA) before biopsy.

Question 183: For deviated nasal septum, which of the following conditions generally requires surgical intervention?

A. Septal spur with epistaxis
B. Marked septal deviation
C. Persistent rhinorrhea
D. Recurrent sinusitis (Correct Answer)

Explanation: **Explanation:** The primary indication for surgical correction of a Deviated Nasal Septum (DNS), such as Septoplasty or SMR, is the presence of **mechanical obstruction** leading to secondary complications. **Why "Recurrent Sinusitis" is the correct answer:** A deviated septum can physically obstruct the **osteomeatal complex (OMC)**, the narrow channel where the paranasal sinuses drain. This blockage impairs mucociliary clearance, leading to stasis of secretions and secondary bacterial infection. When DNS causes recurrent or chronic sinusitis that fails medical management, surgical intervention (Septoplasty) is mandatory to restore sinus ventilation and drainage. **Analysis of Incorrect Options:** * **A. Septal spur with epistaxis:** While a spur can cause localized drying and bleeding, it is often managed conservatively with lubricants or cautery. Surgery is only considered if bleeding is severe and refractory. * **B. Marked septal deviation:** The *degree* of deviation does not dictate surgery; the *symptoms* do. Many patients have marked deviation but remain asymptomatic. Surgery is not indicated for anatomical findings alone. * **C. Persistent rhinorrhea:** Rhinorrhea is typically a symptom of rhinitis (allergic or vasomotor) rather than a structural septal issue. Correcting the septum rarely resolves persistent watery discharge. **Clinical Pearls for NEET-PG:** * **Cottle’s Test:** Used to differentiate nasal valve obstruction from septal deviation. * **Sluder’s Neuralgia:** Facial pain caused by a septal spur impinging on the turbinate (contact point headache). * **Age for Surgery:** SMR is generally avoided before age 17 to prevent interference with midfacial growth; Septoplasty is the preferred conservative approach in younger patients. * **Complication:** The most common complication of SMR is a septal hematoma, which, if untreated, leads to a septal abscess and "Saddle Nose" deformity.

Question 184: Cottle's test assesses the patency of the nares in which condition?

A. Atrophic rhinitis
B. Rhinosporidiosis
C. Deviated nasal septum (Correct Answer)
D. Hypertrophied inferior turbinate

Explanation: ### Explanation **Cottle’s Test** is a clinical maneuver used to evaluate the patency of the **nasal valve**, which is the narrowest part of the nasal airway. **Why Deviated Nasal Septum (DNS) is correct:** In patients with a Deviated Nasal Septum, the deviation often occurs at or near the internal nasal valve (formed by the caudal border of the upper lateral cartilage and the septum). During Cottle’s test, the cheek is pulled laterally to open the valve angle. If this maneuver results in an **improvement in airflow** or relief of obstruction, the test is positive, indicating that the site of obstruction is the nasal valve (often due to septal deviation or collapse of the lateral nasal wall). **Why other options are incorrect:** * **Atrophic Rhinitis:** This condition is characterized by a pathologically wide nasal cavity due to mucosal atrophy. Patients suffer from "paradoxical obstruction" despite a patent airway; Cottle’s test is irrelevant here. * **Rhinosporidiosis:** This is a fungal infection causing friable, leafy vascular masses. Obstruction is due to a physical mass, not a valvular collapse. * **Hypertrophied Inferior Turbinate:** While this causes obstruction, Cottle’s test specifically targets the valve area. Turbinate hypertrophy is better assessed via anterior rhinoscopy and response to decongestants. **High-Yield Clinical Pearls for NEET-PG:** * **Internal Nasal Valve:** The narrowest part of the entire respiratory tract (normal angle is 10–15°). * **Modified Cottle’s Test:** Performed using a cotton-tipped applicator or ear speculum to support the upper lateral cartilage internally; it is more specific than the standard test. * **False Positives:** A positive Cottle’s test can also occur in alar collapse or facial nerve palsy. * **Surgical Correlation:** A positive test suggests that the patient may benefit from septoplasty or functional rhinoplasty (e.g., spreader grafts).

Question 185: What is the treatment of choice for angiofibroma?

A. Surgery (Correct Answer)
B. Radiotherapy
C. Both
D. Chemotherapy

Explanation: **Explanation:** Juvenile Nasopharyngeal Angiofibroma (JNA) is a benign but locally aggressive, highly vascular tumor typically seen in adolescent males. **Why Surgery is the Correct Answer:** Surgery is the **treatment of choice** because it offers the only definitive cure. Modern surgical approaches, particularly **Endoscopic Endonasal Resection**, are preferred for smaller tumors (Fisch Stage I and II). For larger tumors with extensive intracranial or infratemporal spread, open approaches (like the Weber-Fergusson or Transpalatal approach) may be used. Pre-operative **embolization** (usually 24–48 hours prior) is a standard high-yield step to minimize intraoperative blood loss. **Why Other Options are Incorrect:** * **Radiotherapy:** This is reserved for **recurrent, residual, or inoperable** cases (e.g., extensive intracranial extension involving the cavernous sinus). It is not the first line due to the risk of secondary malignancies and growth retardation in young patients. * **Chemotherapy:** JNA is not a chemosensitive tumor; chemotherapy has no established role in its primary management. **NEET-PG High-Yield Pearls:** * **Origin:** Sphenopalatine foramen (specifically the posterior end of the middle turbinate). * **Classic Triad:** Adolescent male + Profuse recurrent epistaxis + Nasal obstruction. * **Holman-Miller Sign:** Anterior bowing of the posterior wall of the maxillary antrum (seen on CT/MRI). * **Frog-face deformity:** Seen in advanced cases with proptosis and facial swelling. * **Contraindication:** Biopsy is strictly contraindicated in the OPD due to the risk of torrential hemorrhage. Diagnosis is primarily clinical and radiological.

Question 186: Depressed bridge of the nose may be due to any of the following except:

A. Leprosy
B. Syphilis
C. Septal abscess
D. Acromegaly (Correct Answer)

Explanation: **Explanation:** A depressed nasal bridge (saddle nose deformity) occurs due to the destruction or lack of support from the nasal septum (cartilaginous part) or the nasal bones (bony part). **Why Acromegaly is the correct answer:** Acromegaly is characterized by an excess of Growth Hormone (GH) after epiphyseal closure. Instead of destruction, it causes **bony overgrowth and thickening**. In the nose, this manifests as **macrognathia** and **broadening/enlargement** of the nose due to soft tissue hypertrophy and bony expansion, rather than a depression or collapse of the bridge. **Analysis of incorrect options:** * **Syphilis:** Congenital syphilis is a classic cause of saddle nose deformity due to gummatous destruction of the nasal bones and septum. * **Leprosy:** This infection specifically targets the cartilaginous framework of the nose, leading to the collapse of the dorsum and a characteristic "facies leontina." * **Septal Abscess:** This is the most common acute cause. Pus collection strips the perichondrium from the septal cartilage, leading to avascular necrosis and subsequent collapse of the nasal bridge. **High-Yield Clinical Pearls for NEET-PG:** * **Saddle Nose Deformity Causes:** Trauma (most common), Septal hematoma/abscess, Leprosy, Syphilis, Tuberculosis, and Wegener’s Granulomatosis. * **Wegener’s Granulomatosis:** Often presents with a "crusty nose" and saddle nose deformity due to necrotizing granulomas. * **Management:** Minor depressions are treated with augmentation rhinoplasty using fillers or cartilage/bone grafts (e.g., iliac crest or rib graft).

Question 187: During nasal endoscopy, at which stage is the Eustachian tube typically examined?

A. First pass (Correct Answer)
B. Second pass
C. Third pass
D. Fourth pass

Explanation: Diagnostic nasal endoscopy (DNE) is a systematic procedure performed in three distinct "passes" to ensure a comprehensive evaluation of the nasal cavity and nasopharynx. **Correct Option: A (First Pass)** The **First Pass** is designed to examine the floor of the nose, the inferior meatus, and the **nasopharynx**. As the endoscope is advanced along the nasal floor, it reaches the nasopharynx, where the **Eustachian tube orifice**, torus tubarius, and Fossa of Rosenmüller are visualized. This pass provides a global view of the nasal anatomy before entering the narrower middle and superior meatuses. **Explanation of Incorrect Options:** * **Second Pass:** This pass involves directing the endoscope into the **middle meatus**. It focuses on the osteomeatal complex, including the uncinate process, bulla ethmoidalis, and the maxillary sinus ostium. * **Third Pass:** This pass is directed superiorly to visualize the **superior meatus**, the sphenoethmoidal recess, and the sphenoid sinus ostium. * **Fourth Pass:** There is no standard "fourth pass" in the classic three-pass technique described by Kennedy. **High-Yield Clinical Pearls for NEET-PG:** * **The Three Passes:** 1st = Nasopharynx; 2nd = Middle Meatus; 3rd = Superior Meatus/Sphenoethmoidal Recess. * **Fossa of Rosenmüller:** Located posterior to the Eustachian tube; it is the most common site for **Nasopharyngeal Carcinoma (NPC)**. * **Endoscope Choice:** A 0-degree endoscope is typically used for the first pass, while a 30-degree or 45-degree scope may be used for detailed visualization in the second and third passes.

Question 188: All of the following are complications of sphenoid sinus surgery except:

A. CSF leak
B. Optic nerve injury
C. Lateral rectus palsy
D. Orbital emphysema (Correct Answer)

Explanation: The sphenoid sinus is often referred to as the "most dangerous sinus" due to its proximity to vital neurovascular structures. Understanding its surgical complications requires a clear grasp of its anatomical boundaries. ### **Why Orbital Emphysema is the Correct Answer** **Orbital emphysema** occurs when air is forced into the orbit, typically following a breach of the **lamina papyracea** (the thin medial wall of the orbit). This is a classic complication of **ethmoid sinus surgery**, not sphenoid surgery. The sphenoid sinus is located posterior to the orbit; while it is adjacent to the orbital apex, a breach here is more likely to cause neurovascular deficits rather than simple air entrapment in the orbital soft tissues. ### **Analysis of Incorrect Options** * **A. CSF Leak:** The roof of the sphenoid sinus (planum sphenoidale) and the lateral wall are thin. Injury to the skull base in this area leads to cerebrospinal fluid rhinorrhea. * **B. Optic Nerve Injury:** The optic nerve runs in the lateral wall of the sphenoid sinus (often dehiscent in 4-25% of cases). Surgical trauma here can lead to immediate blindness. * **C. Lateral Rectus Palsy:** The **Abducens nerve (CN VI)** is the most medial structure within the adjacent **cavernous sinus**. Injury to the lateral wall of the sphenoid can damage this nerve, resulting in lateral rectus palsy and diplopia. ### **Clinical Pearls for NEET-PG** * **Critical Relations:** The Internal Carotid Artery (ICA) and Optic Nerve are the most vital structures in the lateral wall of the sphenoid. * **Onodi Cell:** A posterior-most ethmoid cell that migrates over the sphenoid sinus. It closely surrounds the optic nerve, increasing the risk of blindness during ethmoidectomy. * **Most common nerve injured in FESS:** The medial rectus muscle or the optic nerve (during ethmoidectomy), but specifically for sphenoid surgery, the ICA and Optic nerve are at highest risk.

Question 189: To prevent synechiae formation after nasal surgery, which one of the following packings is the most useful?

A. Mitomycin (Correct Answer)
B. Ribbon gauze
C. Ribbon gauze with liquid paraffin
D. Ribbon gauze with steroids

Explanation: **Explanation:** **1. Why Mitomycin C is the correct answer:** Synechiae (adhesions) are the most common complication following functional endoscopic sinus surgery (FESS), occurring when denuded mucosal surfaces touch and heal together. **Mitomycin C (MMC)** is a potent fibroblast inhibitor and an alkylating agent derived from *Streptomyces caespitosus*. When applied topically (typically 0.4 to 0.5 mg/ml), it inhibits the proliferation of fibroblasts and reduces collagen synthesis. By suppressing the scarring process during the initial phase of wound healing, it significantly reduces the incidence of postoperative synechiae compared to traditional packing materials. **2. Why the other options are incorrect:** * **Ribbon Gauze (B):** Dry gauze is abrasive. Its removal often causes mucosal trauma and bleeding, which actually promotes the formation of raw surfaces and subsequent adhesions. * **Ribbon Gauze with Liquid Paraffin (C):** While paraffin reduces trauma during removal, it acts merely as a lubricant. It does not possess the pharmacological properties required to inhibit fibroblast activity or prevent the biological process of adhesion. * **Ribbon Gauze with Steroids (D):** While steroids have anti-inflammatory properties and can reduce polyp recurrence, they are generally less effective than Mitomycin C in specifically preventing mechanical synechiae formation in the immediate postoperative period. **3. Clinical Pearls for NEET-PG:** * **Mechanism of MMC:** It acts by cross-linking DNA, which prevents cell division (antimitotic). * **Other uses of MMC in ENT:** It is also used in **Laryngotracheal Stenosis** (to prevent restenosis after dilatation) and in **Myringotomy** (to keep the perforation patent for a longer duration). * **Most common site for Synechiae:** Between the middle turbinate and the lateral nasal wall. * **Prevention:** Beyond MMC, the use of "Bolgerization" (controlled synechiae) or silastic stents/sheets is also common.

Question 190: Which investigation is most appropriate for diagnosing allergic rhinitis?

A. CT Scan
B. X-ray
C. Nasal Smear (Correct Answer)
D. MRI

Explanation: **Explanation:** **Correct Answer: C. Nasal Smear** Allergic rhinitis is a clinical diagnosis supported by evidence of IgE-mediated inflammation. A **nasal smear** is a simple, cost-effective, and highly specific diagnostic tool. In patients with allergic rhinitis, the smear typically reveals a high concentration of **eosinophils** (usually >10% of the total cell count). The presence of these eosinophils confirms an allergic etiology rather than an infectious one. **Why other options are incorrect:** * **A & B (CT Scan and X-ray):** Imaging is not used to diagnose allergic rhinitis. CT scans are the "Gold Standard" for **Chronic Rhinosinusitis (CRS)** and evaluating the osteomeatal complex, but they show non-specific mucosal thickening in allergy. X-rays (like Waters' view) are largely obsolete in modern rhinology. * **D. MRI:** MRI is reserved for evaluating soft tissue extensions, such as suspected **fungal sinusitis** or **nasal malignancies** (e.g., Inverted Papilloma). It is too sensitive and expensive for routine allergy workups. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard for identifying specific allergens:** Skin Prick Test (SPT). * **In-vitro test:** RAST (Radioallergosorbent Test) measures allergen-specific IgE levels. * **Physical Exam findings:** Look for "Allergic Shiners" (infraorbital edema), "Dennie-Morgan lines," and the "Allergic Salute" (leading to a transverse nasal crease). * **First-line Treatment:** Intranasal corticosteroids (e.g., Fluticasone) are the most effective maintenance therapy.

Practice by Chapter

Functional Endoscopic Sinus Surgery

Practice Questions

Balloon Sinuplasty

Practice Questions

Extended Endoscopic Approaches

Practice Questions

Frontal Sinus Surgery

Practice Questions

Sphenoid Sinus Surgery

Practice Questions

CSF Rhinorrhea Repair

Practice Questions

Revision Sinus Surgery

Practice Questions

Nasal Polyposis Management

Practice Questions

Invasive Fungal Sinusitis

Practice Questions

Orbital Complications of Sinusitis

Practice Questions

Intracranial Complications of Sinusitis

Practice Questions

Olfactory Disorders

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Rhinology — MCQs

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