Diseases of the Nose and Paranasal Sinuses Practice Questions

Q: Sudden death occurring after maxillary sinus irrigation is most likely due to which of the following complications?

Air embolism. ### Explanation **Correct Answer: C. Air Embolism** **Mechanism:** Air embolism is a rare but catastrophic complication of maxillary sinus irrigation (Antral wash-out). It occurs when air is accidentally introduced into the venous system. During the procedure, the trocar may injure the rich venous plexus of the maxillary sinus mucosa or enter a bony dehiscence. If air is insufflated into the sinus (often to check for patency or to clear the cannula) before or after irrigation, it can enter these damaged veins, travel to the right heart, and subsequently to the pulmonary circulation or through a patent foramen ovale to the brain, leading to sudden cardiovascular collapse or stroke. **Analysis of Incorrect Options:** * **A. Fat Embolism:** This typically occurs following fractures of long bones or orthopedic surgeries where bone marrow fat enters the circulation. It is not associated with sinus procedures. * **B. Pulmonary Embolism:** This usually results from deep vein thrombosis (DVT) in the lower extremities. While an air embolism can lodge in the pulmonary artery, "Pulmonary Embolism" as a standalone term traditionally refers to thromboembolism. * **D. Maxillary Artery Thrombosis:** While the maxillary artery is in proximity, its thrombosis would lead to localized ischemia or necrosis rather than sudden systemic death. **High-Yield Clinical Pearls for NEET-PG:** * **Prevention:** Always ensure the syringe is filled with saline (not air) and **never** use air to "blow out" the remaining fluid from the sinus. * **Positioning:** If air embolism is suspected, place the patient in the **Durant’s position** (Left lateral decubitus with Trendelenburg) to trap air in the apex of the right ventricle. * **Other Complications of Antral Wash-out:** Vasovagal attack (most common), orbital injury, and hemorrhage.

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

Orbital invasion. **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.

Q: A 20-year-old female presents with nasal obstruction and crusting of the nose. Examination revealed an infiltrating lesion involving the nasal vestibule and upper lip with broadening of the nasal dorsum. What is the likely diagnosis?

Rhinoscleroma. **Explanation:** The clinical presentation of nasal obstruction, crusting, and an infiltrating lesion involving the nasal vestibule and upper lip, combined with the characteristic **"broadening of the nasal dorsum" (Hebra nose)**, is pathognomonic for **Rhinoscleroma**. **Rhinoscleroma** is a chronic granulomatous disease caused by *Klebsiella rhinoscleromatis* (Frisch bacillus). It typically progresses through three stages: 1. **Atrophic stage:** Mimics atrophic rhinitis (crusting, foul smell). 2. **Granulomatous/Proliferative stage:** Formation of painless, non-ulcerative granulomatous nodules. This stage causes the characteristic woody-hard swelling and broadening of the nose. 3. **Cicatricial stage:** Extensive fibrosis and stenosis. **Why other options are incorrect:** * **Rhinosporidiosis:** Caused by *Rhinosporidium seeberi*, it presents as a leafy, friable, strawberry-like vascular polyp, usually following bathing in stagnant water. It does not typically involve the upper lip or cause nasal broadening. * **Fungal Granuloma:** (e.g., Aspergillosis or Mucormycosis) Usually presents with bone destruction, necrotic debris, or invasive features in immunocompromised patients, rather than the specific "Hebra nose" deformity. * **Nasal Diphtheria:** Presents with an adherent greyish-white membrane and excoriation of the nares/upper lip due to discharge, but does not cause granulomatous infiltration or nasal broadening. **High-Yield Pearls for NEET-PG:** * **Causative Agent:** *Klebsiella rhinoscleromatis* (Gram-negative diplobacillus). * **Histopathology:** Look for **Mikulicz cells** (foamy macrophages containing bacilli) and **Russell bodies** (eosinophilic hyaline inclusions in plasma cells). * **Drug of Choice:** Streptomycin and Tetracycline (Long-term therapy). * **Biopsy** is the gold standard for diagnosis.

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

Hereditary hemorrhagic telangiectasia. **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.

Q: TESPAL is used in the management of which of the following conditions?

Epistaxis. **Explanation:** **TESPAL** stands for **Trans-Ethmoidal Sphenopalatine Artery Ligation**. It is a surgical procedure used in the management of **refractory posterior epistaxis**. 1. **Why Epistaxis is correct:** The sphenopalatine artery (SPA), a terminal branch of the maxillary artery, is known as the "Artery of Epistaxis" because it supplies the majority of the nasal mucosa. In cases of severe posterior epistaxis that fail to respond to anterior/posterior nasal packing, TESPAL is performed endoscopically. By ligating the artery as it exits the sphenopalatine foramen, the blood supply to the posterior nasal cavity is cut off, effectively controlling the bleed with high success rates and fewer complications compared to internal maxillary artery ligation. 2. **Why other options are incorrect:** * **CSOM (Chronic Suppurative Otitis Media):** Managed via topical antibiotics, aural toilet, or surgeries like tympanoplasty and mastoidectomy. * **Ulcerative Tonsillitis:** Usually managed with antibiotics (e.g., for Vincent’s angina) or supportive care; it does not involve major arterial ligation. * **Ca Larynx:** Managed via radiotherapy, chemotherapy, or surgeries like laryngectomy, depending on the stage. **High-Yield Clinical Pearls for NEET-PG:** * **SPA Anatomy:** It enters the nasal cavity through the sphenopalatine foramen, located just posterior to the **crista ethmoidalis** (an important surgical landmark). * **Woodruff’s Plexus:** The common site for posterior epistaxis, located below the posterior end of the inferior turbinate; the SPA is the primary vessel involved here. * **First-line for Refractory Epistaxis:** Endoscopic SPA ligation (TESPAL) has largely replaced the more invasive Caldwell-Luc approach for maxillary artery ligation.

Q: What is a potato tumor?

Hypertrophied sebaceous gland. **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).

Q: What is the treatment of a nasoalveolar cyst?

Excision. **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.

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

Endoscopic sinus surgery (ESS). **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 1

Sudden death occurring after maxillary sinus irrigation is most likely due to which of the following complications?

Accepted Answer

Air embolism

Answer

Fat embolism

Answer

Pulmonary embolism

Answer

Maxillary artery thrombosis

Question 2

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

Accepted Answer

Orbital invasion

Answer

Areas of high attenuation on CT scan

Answer

Allergic eosinophilic mucin

Answer

Type 1 hypersensitivity

Question 3

A 20-year-old female presents with nasal obstruction and crusting of the nose. Examination revealed an infiltrating lesion involving the nasal vestibule and upper lip with broadening of the nasal dorsum. What is the likely diagnosis?

Accepted Answer

Rhinoscleroma

Answer

Rhinosporidiosis

Answer

Fungal granuloma

Answer

Nasal diphtheria

Question 4

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

Accepted Answer

Infants are initially obligate nasal breathers.

Answer

Infants with choanal atresia usually have concomitant cardiac anomalies.

Answer

The neonatal larynx is smaller and collapses easily.

Answer

Neonates have low oxygen reserves.

Question 5

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

Accepted Answer

Hereditary hemorrhagic telangiectasia

Answer

Encephalotrigeminal angiomatosis

Answer

Nasopharyngeal angiofibroma

Answer

Vascular nevus

Question 6

Saddle shaped nose is due to:

Accepted Answer

Depressed nasal dorsum

Answer

Depressed tip of nose

Answer

Depressed nasal bones

Answer

Destruction of ala of nose

Question 7

TESPAL is used in the management of which of the following conditions?

Accepted Answer

Epistaxis

Answer

CSOM

Answer

Ulcerative tonsillitis

Answer

Ca larynx

Question 8

What is a potato tumor?

Accepted Answer

Hypertrophied sebaceous gland

Answer

Rhinosporidiosis

Answer

Nasopharyngeal angiofibroma

Answer

Tubercular infection

Question 9

What is the treatment of a nasoalveolar cyst?

Accepted Answer

Excision

Answer

Aspiration

Answer

Cautery

Answer

Laser

Question 10

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

Accepted Answer

Endoscopic sinus surgery (ESS)

Answer

Intranasal polypectomy

Answer

Caldwell-Luc operation

Answer

Lateral rhinotomy and excision

Diseases of the Nose and Paranasal Sinuses — MCQs

Diseases of the Nose and Paranasal Sinuses — MCQs

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