Diseases of the Nose and Paranasal Sinuses — MCQs

Diseases of the Nose and Paranasal Sinuses Indian Medical PG Practice Questions and MCQs

Question 261: A 54-year-old man presents with severe pain in his nasal cavity. Radiographic examination reveals a carcinoma in his nasal cavity. In which of the following locations would the carcinoma block the hiatus of the maxillary sinus?

A. Inferior meatus
B. Middle meatus (Correct Answer)
C. Superior meatus
D. Nasopharynx

Explanation: ### Explanation The correct answer is **Middle meatus**. **1. Why Middle Meatus is Correct:** The drainage of the paranasal sinuses is organized into specific meatuses within the lateral wall of the nose. The **maxillary sinus** drains through its ostium into the **hiatus semilunaris**, which is a crescent-shaped groove located in the **middle meatus** (situated between the middle and inferior turbinates). Therefore, any carcinoma or mass occupying the middle meatus will physically obstruct the hiatus, leading to secondary maxillary sinusitis. **2. Why Other Options are Incorrect:** * **Inferior Meatus:** This is the site where the **nasolacrimal duct** opens. Obstruction here would lead to epiphora (overflow of tears) rather than maxillary sinus blockage. * **Superior Meatus:** This location receives the drainage of the **posterior ethmoidal air cells** and the **sphenoid sinus** (via the sphenoethmoidal recess located just above/behind it). * **Nasopharynx:** This is the area posterior to the nasal cavity. While a large nasopharyngeal carcinoma (NPC) can obstruct the posterior choana or the Eustachian tube (leading to otitis media with effusion), it does not directly block the hiatus semilunaris. **3. NEET-PG High-Yield Pearls:** * **Middle Meatus Drainage:** "Frontal, Maxillary, and Anterior & Middle Ethmoidal sinuses" all drain here. (Mnemonic: **FAME**). * **Ostiomeatal Complex (OMC):** This is the functional unit of the middle meatus. It is the most common site for chronic rhinosinusitis. * **Hiatus Semilunaris:** It is bounded superiorly by the **bulla ethmoidalis** and inferiorly by the **uncinate process**. * **Sphenoethmoidal Recess:** The specific drainage site for the Sphenoid sinus.

Question 262: All of the following are diagnostic criteria of allergic fungal sinusitis (AFS) EXCEPT?

A. Areas of high attenuation on CT scan
B. Orbital invasion (Correct Answer)
C. Allergic eosinophilic mucin
D. Type 1 hypersensitivity

Explanation: **Explanation:** Allergic Fungal Sinusitis (AFS) is a non-invasive fungal disease of the paranasal sinuses. The diagnosis is based on the **Bent and Kuhn criteria**, which emphasize that the disease process remains extramucosal. **1. Why "Orbital Invasion" is the correct answer:** AFS is characterized by the absence of tissue invasion. While the accumulated fungal debris and pressure can cause **bone erosion** and expansion (leading to proptosis or telecanthus), the fungus does **not** invade the orbital soft tissues or the brain. If tissue invasion is present, the diagnosis shifts to Invasive Fungal Sinusitis (e.g., Mucormycosis or Chronic Invasive Aspergillosis). **2. Why the other options are incorrect (Diagnostic Criteria):** * **Areas of high attenuation on CT scan:** This is a classic feature. The "double density" sign occurs because of the accumulation of heavy metals (iron, manganese) and calcium salts within the fungal mucin. * **Allergic eosinophilic mucin:** This is the hallmark of AFS. It is a thick, "peanut-butter" like secretion containing eosinophils, Charcot-Leyden crystals, and scattered fungal hyphae (demonstrated by Gomori Methenamine Silver stain). * **Type 1 Hypersensitivity:** AFS is an immunologic reaction, not an infection. Patients typically have an IgE-mediated allergy to the offending fungus, confirmed by skin prick tests or elevated serum IgE. **Clinical Pearls for NEET-PG:** * **Bent and Kuhn Criteria:** 1. Type 1 Hypersensitivity, 2. Nasal Polyposis, 3. Characteristic CT findings, 4. Eosinophilic mucin, 5. Positive fungal stain/culture. * **Most common fungus:** *Bipolaris spicifera* (followed by *Curvularia* and *Aspergillus*). * **Treatment:** Surgical debridement (FESS) followed by **post-operative steroids** (to control the allergic response). Antifungals are generally not required.

Question 263: Frequent bouts of epistaxis are a conspicuous feature of which of the following conditions?

A. Encephalotrigeminal angiomatosis
B. Hereditary hemorrhagic telangiectasia (Correct Answer)
C. Nasopharyngeal angiofibroma
D. Vascular nevus

Explanation: **Explanation:** **Hereditary Hemorrhagic Telangiectasia (HHT)**, also known as **Osler-Weber-Rendu disease**, is an autosomal dominant disorder characterized by the absence of the muscular coat in capillaries and venules. This leads to the formation of fragile arteriovenous malformations (AVMs) and telangiectasias on the skin and mucous membranes. Because the nasal mucosa is highly vascular and the vessels lack contractile elements to stop bleeding, **recurrent, spontaneous epistaxis** is the most common and earliest presenting symptom (seen in >90% of patients). **Analysis of Incorrect Options:** * **Encephalotrigeminal Angiomatosis (Sturge-Weber Syndrome):** Characterized by a "port-wine stain" (nevus flammeus) in the trigeminal distribution and leptomeningeal angiomas. While it involves vascular malformations, it does not typically present with frequent epistaxis. * **Nasopharyngeal Angiofibroma:** While this causes profuse epistaxis, it is a benign tumor typically seen in **adolescent males**. The question asks for a condition where frequent bouts are a "conspicuous feature" across a broader clinical context; HHT is the classic systemic cause for recurrent episodes. * **Vascular Nevus:** This is a localized birthmark (like a strawberry hemangioma). It is usually cutaneous and does not cause systemic or recurrent mucosal bleeding. **High-Yield Clinical Pearls for NEET-PG:** * **Triad of HHT:** Multiple telangiectasias (lips, tongue, fingers), recurrent epistaxis, and a positive family history. * **Management:** Initial treatment involves lubricants or laser photocoagulation. Severe cases may require **Young’s procedure** (surgical closure of the nostrils) to prevent mucosal drying and crusting. * **Complications:** Patients are at risk for pulmonary AVMs, which can lead to paradoxical embolism or brain abscesses.

Question 264: Saddle shaped nose is due to:

A. Depressed tip of nose
B. Depressed nasal dorsum (Correct Answer)
C. Depressed nasal bones
D. Destruction of ala of nose

Explanation: **Explanation:** **Saddle Nose Deformity** (also known as pug nose) is characterized by a loss of height in the **nasal dorsum** (the bridge of the nose) due to the collapse of the osteocartilaginous support. This results in a characteristic "sunken" or concave appearance of the profile, resembling a saddle. **Why Option B is Correct:** The nasal dorsum is supported by the nasal bones (upper third) and the septal cartilage (lower two-thirds). Any pathology that destroys the **septal cartilage** or the **nasal bones** leads to a depression of the dorsum. Common causes include: * **Trauma:** Nasal bone fractures or septal hematoma. * **Infections:** Syphilis (classically congenital), Leprosy, and Tuberculosis. * **Autoimmune:** Granulomatosis with Polyangiitis (Wegener’s). * **Iatrogenic:** Excessive removal of cartilage during SMR (Submucous Resection) or Septoplasty. **Why Other Options are Incorrect:** * **A. Depressed tip of nose:** This refers to "ptosis" of the nasal tip, usually due to loss of support from the lower lateral cartilages or the caudal septum, but it does not constitute a saddle deformity. * **C. Depressed nasal bones:** While depression of the nasal bones can contribute to a saddle nose (especially in the upper third), the term "Saddle Nose" specifically refers to the depression of the **entire dorsum** (often involving the cartilaginous part). * **D. Destruction of ala of nose:** This leads to collapse of the nasal valve or notched nostrils (often seen in Lupus Vulgaris), not a saddle deformity. **High-Yield Clinical Pearls for NEET-PG:** * **Congenital Syphilis:** Classically associated with saddle nose due to destruction of the bridge by syphilitic rhinitis (snuffles). * **Leprosy:** Causes saddle nose by affecting the cartilaginous part of the septum. * **Treatment:** Minor depressions are treated with **augmentation rhinoplasty** using fillers or cartilage grafts; major depressions require bone grafts (e.g., iliac crest).

Question 265: What is a potato tumor?

A. Rhinosporidiosis
B. Hypertrophied sebaceous gland (Correct Answer)
C. Nasopharyngeal angiofibroma
D. Tubercular infection

Explanation: **Explanation:** The term **"Potato Tumor"** is a clinical synonym for **Rhinophyma**. This condition represents the end-stage of chronic acne rosacea, characterized by the progressive hypertrophy of the **sebaceous glands** and connective tissue of the nasal skin. The nose becomes bulbous, pitted, and irregularly enlarged, resembling a potato. It most commonly affects elderly males. **Analysis of Options:** * **Option B (Correct):** Rhinophyma is histologically defined by the massive hyperplasia of sebaceous glands, increased vascularity, and fibrosis. Treatment is usually surgical (e.g., carbon dioxide laser or paring down the tissue with a scalpel). * **Option A (Rhinosporidiosis):** This is a granulomatous fungal-like infection caused by *Rhinosporidium seeberi*. It typically presents as a friable, "strawberry-like" polypoid mass in the nasal cavity, not a potato-like external deformity. * **Option C (Nasopharyngeal Angiofibroma):** This is a benign but locally aggressive vascular tumor found in adolescent males. It presents with profuse epistaxis and nasal obstruction, originating in the sphenopalatine foramen. * **Option D (Tubercular infection):** Nasal tuberculosis usually presents with ulceration or crusting of the cartilaginous septum, potentially leading to perforation, but does not cause sebaceous hypertrophy. **High-Yield Clinical Pearls for NEET-PG:** * **Rhinophyma** is associated with **Acne Rosacea** (Phymatous subtype). * It is **not** a true neoplasm, despite the name "tumor." * **Management:** Decortication (paring down) of the hypertrophied tissue while preserving the underlying hair follicles for re-epithelialization. * **Differential Diagnosis:** Do not confuse "Potato Tumor" (Rhinophyma) with **"Potato Nodes"** (the characteristic large, matted, non-tender lymph nodes seen in Sarcoidosis).

Question 266: What is the treatment of a nasoalveolar cyst?

A. Aspiration
B. Excision (Correct Answer)
C. Cautery
D. Laser

Explanation: **Explanation:** A **nasoalveolar cyst** (also known as **Klestadt’s cyst**) is a rare, non-odontogenic, soft-tissue cyst located in the nasolabial fold area, just below the ala of the nose. **Why Excision is the Correct Answer:** The definitive treatment for a nasoalveolar cyst is **complete surgical excision**. Because the cyst is situated in the soft tissue (extraosseous), it is typically approached via a **sublabial incision** (Caldwell-Luc type approach). Complete removal is necessary to prevent recurrence and to confirm the diagnosis histologically. **Why Other Options are Incorrect:** * **Aspiration (A):** While aspiration may temporarily reduce the size of the cyst for diagnostic purposes or symptomatic relief, the cystic lining remains intact. This leads to a 100% recurrence rate as the fluid re-accumulates. * **Cautery (C):** Cauterization is ineffective for deep-seated cystic lesions and would cause unnecessary thermal damage to the overlying vestibular skin or oral mucosa without addressing the pathology. * **Laser (D):** Laser ablation is not the standard of care. It is difficult to ensure complete removal of the epithelial lining with a laser, and it risks incomplete treatment compared to cold-knife dissection. **High-Yield Clinical Pearls for NEET-PG:** * **Location:** It is located at the junction of the medial nasal, lateral nasal, and maxillary processes. * **Clinical Presentation:** Presents as a slow-growing, painless swelling in the nasolabial fold, causing **elevation of the ala of the nose** and distortion of the nostril. * **Radiology:** Unlike other cysts in this region, it is a **soft-tissue cyst**. Therefore, X-rays are usually normal, though large cysts may cause "saucerization" (pressure erosion) of the underlying alveolar bone. * **Histology:** Usually lined by pseudostratified columnar epithelium (respiratory epithelium) or stratified squamous epithelium.

Question 267: What is the current treatment of choice for a large antrochoanal polyp in a 30-year-old man?

A. Intranasal polypectomy
B. Caldwell-Luc operation
C. Endoscopic sinus surgery (ESS) (Correct Answer)
D. Lateral rhinotomy and excision

Explanation: **Explanation:** An **Antrochoanal Polyp (Killian’s Polyp)** originates from the mucosa of the maxillary sinus, exits through the accessory ostium, and extends into the choana and nasopharynx. **Why Endoscopic Sinus Surgery (ESS) is the Correct Choice:** ESS is the current gold standard because it allows for precise visualization and complete removal of the polyp from its point of origin. By performing a wide **middle meatal antrostomy**, the surgeon can identify the stalk (usually on the posterior or lateral wall of the maxillary sinus) and remove it entirely. This approach is minimally invasive, preserves sinus physiology, and has a significantly lower recurrence rate compared to simple polypectomy. **Analysis of Incorrect Options:** * **Intranasal Polypectomy:** This involves removing only the nasal part of the polyp. Since the antral portion (the "root") is left behind, the recurrence rate is nearly 100%. * **Caldwell-Luc Operation:** Historically used to clear the maxillary sinus via a sublabial approach. While effective, it is now considered obsolete for this condition due to higher morbidity (nerve injury, facial swelling, and dental numbness) compared to ESS. It is reserved only for rare, recurrent cases where ESS fails. * **Lateral Rhinotomy:** This is an invasive external approach used for malignant tumors or extensive benign lesions like Inverted Papilloma. It is unnecessarily aggressive for a benign antrochoanal polyp. **Clinical Pearls for NEET-PG:** * **Origin:** Most commonly from the **maxillary sinus** (Antrum). * **Radiology:** On CT scan, it appears as a dumbbell-shaped mass extending from the sinus to the nasopharynx. * **Age:** Typically seen in children and young adults (unlike ethmoidal polyps, which are seen in older adults). * **Presentation:** Usually **unilateral** nasal obstruction. * **Components:** It has three parts—Antral, Nasal, and Choanal.

Question 268: Rhinoscleroma is caused by which type of infection?

A. Viral
B. Fungal
C. Bacterial (Correct Answer)
D. None of the above

Explanation: **Explanation:** **Rhinoscleroma** is a chronic, progressive granulomatous disease of the nose and upper respiratory tract. The correct answer is **Bacterial** because it is caused by **_Klebsiella pneumoniae subsp. rhinoscleromatis_** (also known as the Frisch bacillus), which is a Gram-negative, encapsulated coccobacillus. * **Why Bacterial is correct:** The disease is an infectious process where the bacteria trigger a specific cellular response, leading to the formation of characteristic granulomas. It typically progresses through three stages: Catarrhal (atrophic), Proliferative (granulomatous), and Cicatricial (fibrotic). * **Why Viral is incorrect:** While viruses can cause acute rhinitis, they do not produce the chronic, woody-hard granulomatous masses or the specific histological markers (Mikulicz cells) seen in Rhinoscleroma. * **Why Fungal is incorrect:** Fungal infections like Rhinosporidiosis or Aspergillosis present differently. Rhinosporidiosis (caused by *Rhinosporidium seeberi*) typically presents as leafy, strawberry-like vascular masses, unlike the infiltrative nature of Rhinoscleroma. **High-Yield Clinical Pearls for NEET-PG:** 1. **Histology (Gold Standard):** Look for **Mikulicz cells** (large foamy macrophages containing the bacilli) and **Russell bodies** (eosinophilic hyaline inclusions in plasma cells). 2. **Clinical Feature:** The nose may feel "woody hard" to touch. It can lead to "Hebra nose" (deformity of the external nose). 3. **Biopsy:** The most definitive way to diagnose. 4. **Treatment:** Long-term antibiotics (Streptomycin and Tetracycline are traditional choices; Ciprofloxacin is also effective) combined with surgical debridement if necessary.

Question 269: Nasal perforation in the bony part is seen in which of the following conditions?

A. Syphilis (Correct Answer)
B. Tuberculosis
C. Wegner's granuloma
D. Allergic rhinitis

Explanation: **Explanation:** The site of nasal septal perforation is a high-yield diagnostic clue in ENT. To answer this correctly, one must distinguish between the **cartilaginous septum** (anterior) and the **bony septum** (posterior, comprising the vomer and ethmoid bone). **1. Why Syphilis is Correct:** Syphilis (specifically tertiary syphilis) has a predilection for the **bony part** of the nasal septum. It causes gummatous necrosis and endarteritis, leading to the destruction of the vomer. This often results in a "saddle nose" deformity due to the collapse of the bony bridge. **2. Analysis of Incorrect Options:** * **Tuberculosis (Lupus Vulgaris):** Typically affects the **cartilaginous part** of the septum. It is an indolent process that rarely involves the bone. * **Wegener’s Granulomatosis (GPA):** While it causes extensive crusting and "saddle nose" deformity, the perforation primarily involves the **cartilaginous septum**. It is characterized by necrotizing granulomas and vasculitis. * **Allergic Rhinitis:** This is a mucosal inflammatory condition. It does not cause tissue necrosis or septal perforation. **Clinical Pearls for NEET-PG:** * **Cartilaginous Perforation (Common):** Trauma (most common overall), Septal surgery (SMR/Septoplasty), Leprosy, Tuberculosis, Cocaine abuse, and Wegener’s. * **Bony Perforation (Rare):** Pathognomonic for **Syphilis**. * **Leprosy:** Usually affects the anterior cartilaginous part but is unique because the perforation is often **painless** due to nerve involvement. * **Saddle Nose Deformity:** Can be caused by both Syphilis (bony collapse) and Trauma/Wegener’s (cartilaginous collapse).

Question 270: Rhinolalia clausa is associated with all of the following, EXCEPT:

A. Allergic rhinitis
B. Palatal paralysis (Correct Answer)
C. Adenoids
D. Nasal polyps

Explanation: **Explanation:** The question tests the distinction between the two types of resonance disorders: **Rhinolalia Clausa** (Hyponasality) and **Rhinolalia Aperta** (Hypernasality). **1. Why Palatal Paralysis is the Correct Answer:** Palatal paralysis causes **Rhinolalia Aperta**. In a normal state, the soft palate elevates to close the nasopharyngeal isthmus during the production of oral sounds. In palatal paralysis, this seal fails, allowing air to escape through the nose inappropriately during speech. This results in "hypernasality." Since the question asks for the condition *not* associated with Rhinolalia Clausa, palatal paralysis is the correct exception. **2. Why the other options are incorrect (Causes of Rhinolalia Clausa):** Rhinolalia Clausa occurs when there is an **obstruction** in the nose or nasopharynx, preventing normal nasal resonance. * **Allergic Rhinitis:** Causes turbinate hypertrophy and mucosal edema, obstructing the nasal passage. * **Adenoids:** A classic cause of nasopharyngeal obstruction in children, leading to a "stuffy nose" voice. * **Nasal Polyps:** These benign masses physically block the nasal cavity, preventing air from vibrating in the paranasal sinuses. **Clinical Pearls for NEET-PG:** * **Rhinolalia Clausa (Hyponasality):** "M" sounds like "B" and "N" sounds like "D." (e.g., "Morning" sounds like "Bordig"). * **Rhinolalia Aperta (Hypernasality):** Seen in Cleft Palate, Velopharyngeal insufficiency, and Bulbar palsy. * **Cul-de-sac Resonance:** A variation where sound enters the nasal cavity but is trapped by an anterior obstruction (e.g., deviated nasal septum).

Practice by Chapter

Rhinitis

Practice Questions

Acute Rhinosinusitis

Practice Questions

Chronic Rhinosinusitis

Practice Questions

Nasal Polyposis

Practice Questions

Allergic Fungal Sinusitis

Practice Questions

Deviated Nasal Septum

Practice Questions

Epistaxis

Practice Questions

Nasal Trauma

Practice Questions

Choanal Atresia

Practice Questions

CSF Rhinorrhea

Practice Questions

Tumors of the Nose and Paranasal Sinuses

Practice Questions

Complications of Sinusitis

Practice Questions

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