Diseases of the Nose and Paranasal Sinuses Practice Questions

Q: Which of the following is FALSE regarding a nasolabial cyst?

It is odontogenic in origin. ### Explanation **Nasolabial Cyst (Klestadt’s Cyst)** The correct answer is **B**, as nasolabial cysts are **non-odontogenic** in origin. **1. Why Option B is False (The Correct Answer):** Nasolabial cysts are developmental, non-odontogenic cysts. They arise from the remnants of the **nasolacrimal duct** or from trapped epithelial remnants at the junction of the globular, lateral nasal, and maxillary processes. Since they do not originate from tooth-forming tissues (the dental lamina), they are classified as soft-tissue cysts, not odontogenic cysts. **2. Analysis of Other Options:** * **Option A (Klestadt’s Cyst):** This is the eponymous name for a nasolabial cyst. It is a classic synonym frequently tested in PG entrance exams. * **Option C (Treated by excision):** The standard treatment is surgical excision, typically via a **sublabial approach** (Caldwell-Luc type incision). Small asymptomatic cysts may be observed, but symptomatic ones require removal. * **Option D (Region of the nasolabial fold):** These cysts are characteristically located in the soft tissue of the nasolabial fold, deep to the ala of the nose. **3. Clinical Pearls for NEET-PG:** * **Presentation:** Typically presents as a slow-growing, painless swelling in the nasolabial region, causing **ala flare** and loss of the nasolabial fold. * **Demographics:** Most common in females (4:1 ratio) in the 4th to 6th decades of life. * **Radiology:** Unlike odontogenic cysts, these are **soft-tissue cysts**. Therefore, they usually do not show any bony changes on X-ray, though they may cause pressure erosion (scalloping) of the underlying maxilla in chronic cases. * **Physical Exam:** Bimanual palpation reveals a fluctuant swelling with one finger in the labial sulcus and the other in the nasal vestibule.

Q: A black necrotic mass is seen in the nose of an elderly diabetic patient. What is the most probable diagnosis?

Mucormycosis. **Explanation:** The clinical presentation of a **black necrotic mass** (eschar) in the nasal cavity of an **elderly diabetic patient** is a classic hallmark of **Rhinocerebral Mucormycosis**. **1. Why Mucormycosis is correct:** Mucormycosis is an opportunistic fungal infection caused by fungi of the order Mucorales. It predominantly affects patients with uncontrolled diabetes (especially those in ketoacidosis) or immunosuppression. The fungus is **angioinvasive**, meaning it invades blood vessel walls, leading to thrombosis and subsequent tissue infarction. This ischemia results in the characteristic **painless black eschar** on the turbinates, palate, or skin. **2. Why other options are incorrect:** * **Lupus vulgaris:** This is a progressive form of cutaneous tuberculosis. It typically presents with "apple-jelly" nodules on the face, not acute necrotic masses in the nose. * **Aspergillosis:** While it can cause fungal sinusitis, the invasive form is less common than Mucormycosis in diabetics and usually doesn't present with the rapid, hallmark black necrotic eschar. * **Pseudomonas infection:** This typically causes greenish-blue purulent discharge (e.g., in malignant otitis externa) rather than a dry, black necrotic mass. **Clinical Pearls for NEET-PG:** * **Diagnosis:** Confirmed by KOH mount or biopsy showing **broad, ribbon-like, non-septate hyphae** branching at **right angles (90°)**. * **Management:** This is a surgical emergency. Treatment involves aggressive surgical debridement and intravenous **Liposomal Amphotericin B**. * **Risk Factor:** Diabetic Ketoacidosis (DKA) is the strongest risk factor because the fungus thrives in acidic, glucose-rich environments.

Q: Which bone is commonly fractured in facial injuries?

Nasal bones. **Explanation:** The **nasal bones** are the most commonly fractured bones in the facial skeleton, accounting for approximately 40–50% of all facial fractures. This high incidence is due to their prominent, central position on the face and the relative fragility of the thin bony plates compared to the more robust surrounding structures. **Analysis of Options:** * **A. Nasal bones (Correct):** Their projection makes them the first point of impact in blunt trauma (e.g., altercations, falls, or sports injuries). * **B. Nasoethmoid bone:** Fractures involving the Naso-Orbito-Ethmoid (NOE) complex are much rarer and require high-velocity impact. They are clinically significant due to potential injury to the lacrimal apparatus and medial canthal ligament (leading to traumatic telecanthus). * **C. Zygomatic bone:** The zygoma is the **second** most common facial bone fractured. Specifically, the "Tripod fracture" (Zygomaticomaxillary complex) is a frequent exam topic. * **D. Mandible:** While a common site of injury, it is less frequently fractured than the nasal bones. It is often described as a "ring-like" structure; hence, fractures often occur at two sites (e.g., symphysis and contralateral condyle). **Clinical Pearls for NEET-PG:** * **Diagnosis:** Nasal fractures are primarily a **clinical diagnosis**. X-rays are often unnecessary as they do not change the immediate management of simple fractures. * **Management:** The most critical immediate assessment in a nasal fracture is to rule out a **Septal Hematoma**. If present, it must be drained urgently to prevent septal necrosis and a subsequent "Saddle Nose" deformity. * **Order of Frequency:** Nasal bones > Zygoma > Mandible > Maxilla (Le Fort).

Q: Perforation of the nasal septum is not seen in which of the following conditions?

Rhinosporidiosis. **Explanation:** The correct answer is **Rhinosporidiosis** because it is a chronic granulomatous disease characterized by the formation of **friable, leafy, strawberry-like vascular polypoidal masses** that bleed on touch. Unlike other granulomatous conditions, Rhinosporidiosis typically involves the mucous membrane of the septum or turbinates without causing necrosis or destruction of the underlying cartilage or bone; therefore, it does **not** lead to septal perforation. **Analysis of Incorrect Options:** * **Tuberculosis (Lupus Vulgaris):** Typically involves the **cartilaginous** part of the septum. It causes indolent ulceration that eventually leads to perforation. * **Syphilis:** Classically involves the **bony** part of the septum (vomer). Tertiary syphilis (gumma) is highly destructive and is a notorious cause of large septal perforations and "saddle nose" deformity. * **Leprosy:** Primarily affects the anterior cartilaginous septum. Atrophic changes and secondary infections lead to crusting, ulceration, and eventual perforation. **Clinical Pearls for NEET-PG:** * **Most common cause of septal perforation:** Trauma (specifically post-surgical, e.g., SMR or Septoplasty). * **Rhinosporidiosis:** Caused by *Rhinosporidium seeberi* (now classified as a Mesomycetozoea, not a fungus). It is associated with bathing in stagnant pond water. Histology shows characteristic **sporangia** containing endospores. * **Wegener’s Granulomatosis:** Another high-yield cause of septal perforation, often associated with c-ANCA positivity.

Q: Which of the following statements regarding fungal sinusitis is true?

Surgery is required for treatment.. **Explanation:** Fungal sinusitis is broadly classified into **non-invasive** (Fungal ball, Allergic Fungal Rhinosinusitis - AFRS) and **invasive** (Acute fulminant, Chronic, and Granulomatous) forms. **Why Option A is Correct:** In almost all forms of fungal sinusitis, **surgical debridement** (usually via Functional Endoscopic Sinus Surgery - FESS) is the definitive treatment. For non-invasive types like a Fungal Ball or AFRS, surgery is required to remove the "allergic mucin" and debris to prevent recurrence. For invasive types, urgent surgical debridement of necrotic tissue is life-saving to limit the spread to the orbit or brain. **Analysis of Incorrect Options:** * **Option B:** The most common organism associated with fungal sinusitis (especially AFRS and Fungal Ball) is **Aspergillus fumigatus**, not *Aspergillus niger*. * **Option C:** While Amphotericin B is used for invasive fungal sinusitis, the **Liposomal** form is preferred over conventional IV Amphotericin B to reduce nephrotoxicity. Furthermore, surgery remains the primary requirement before or alongside antifungal therapy. * **Option D:** On imaging (CT/X-ray), fungal sinusitis typically shows **hyperdense areas** (due to calcium phosphate and manganese deposits) rather than a simple hazy appearance. A "hazy appearance" is more characteristic of viral or bacterial sinusitis. **High-Yield Clinical Pearls for NEET-PG:** * **AFRS:** Characterized by "peanut-butter" like allergic mucin, Charcot-Leyden crystals on histology, and Type I & III hypersensitivity. * **Double Density Sign:** A classic CT scan finding in AFRS (hyperdense central area surrounded by hypodense mucosa). * **Mucormycosis:** A medical emergency seen in diabetics/immunocompromised patients; presents with black eschar on the turbinates. Treatment is Liposomal Amphotericin B + aggressive debridement.

Q: Allergic fungal sinusitis is typically seen in which patient population?

Immunocompetent patients. **Explanation:** **Allergic Fungal Sinusitis (AFS)** is a non-invasive form of fungal rhinosinusitis. The underlying pathophysiology is a **Type I and Type III hypersensitivity reaction** to fungal antigens (most commonly *Bipolaris*, *Curvularia*, or *Aspergillus*) rather than an active infection. Because it is an exaggerated immune response, it typically occurs in **immunocompetent patients**, often young adults with a history of atopy, asthma, or nasal polyposis. **Analysis of Options:** * **Option A (Correct):** Immunocompetent individuals have the robust immune system necessary to mount the hypersensitivity reaction that characterizes AFS. * **Option B & C (Incorrect):** Immunocompromised and diabetic patients are specifically predisposed to **Invasive Fungal Sinusitis** (e.g., Mucormycosis or Invasive Aspergillosis). In these patients, the fungus invades tissues and blood vessels due to a lack of immune containment, which is the clinical opposite of the localized allergic reaction seen in AFS. **NEET-PG High-Yield Pearls:** * **Bent and Kuhn Criteria:** Used for the diagnosis of AFS. Key features include nasal polyposis, Type I hypersensitivity (elevated IgE/Skin test), and characteristic CT findings. * **CT Appearance:** Shows "Hyperdense" or "Double Density" signals due to the presence of heavy metals (iron/manganese) and calcium salts within the fungal debris. * **Pathology:** Presence of **"Allergic Mucin"**—thick, peanut-butter-like mucus containing Charcot-Leyden crystals and eosinophils. * **Treatment:** Functional Endoscopic Sinus Surgery (FESS) to clear the mucin, followed by long-term **post-operative steroids** to prevent recurrence. Antifungals are generally not required.

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

The battery substance can leak and cause tissue damage.. **Explanation:** A disc battery (button battery) in the nasal cavity is a **surgical emergency**. Unlike inert foreign bodies, disc batteries cause rapid and extensive tissue destruction through three primary mechanisms: 1. **Leakage of alkaline contents:** The caustic 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 delicate nasal mucosa and septum. **Analysis of Options:** * **Option A (Correct):** This is the most critical consideration because the chemical leakage and electrochemical reactions can lead to **septal perforation** and synechiae formation within hours. * **Option B:** While any foreign body carries a theoretical risk, tetanus is not the primary or most urgent concern in nasal battery impaction. * **Option C:** While specialist removal is necessary, it is a management step, not the "most important consideration" or the underlying pathological reason for the urgency. * **Option D:** **Contraindicated.** Instilling nasal drops or irrigation can liquefy the battery contents and accelerate the electrical conduction, worsening the chemical burn. **High-Yield Clinical Pearls for NEET-PG:** * **Imaging:** A lateral X-ray shows a **"Double Contour" or "Step-off" sign**, distinguishing a battery from a coin. * **Urgency:** Removal should ideally occur within **2–4 hours** to prevent permanent septal damage. * **Complications:** Septal perforation, saddle nose deformity, and orbital complications. * **Golden Rule:** Never irrigate the nose if a battery is suspected.

Q: Rhinitis medicamentosa is due to which of the following?

Nasal decongestants. **Explanation:** **Rhinitis Medicamentosa (RM)** is a condition of rebound nasal congestion brought on by the prolonged use of **topical nasal decongestants** (Option A). These drugs, typically sympathomimetic amines (e.g., Oxymetazoline, Xylometazoline), work by stimulating alpha-receptors to cause vasoconstriction. However, when used for more than 3–5 days, they lead to a "rebound" phenomenon. The underlying pathophysiology involves the downregulation of alpha-receptors and interstitial edema, resulting in severe compensatory vasodilation and nasal obstruction that is refractory to the original medication. **Analysis of Incorrect Options:** * **B. Steroids:** Topical nasal steroids (e.g., Fluticasone) are actually the **treatment of choice** for Rhinitis Medicamentosa. They do not cause rebound congestion and help reduce mucosal inflammation. * **C. Antihistamines:** These are used to treat allergic rhinitis by blocking H1 receptors. They do not affect the vasomotor tone of nasal mucosa in a way that leads to RM. * **D. Surgery:** While chronic mucosal hypertrophy (from long-term RM) might eventually require surgical reduction of turbinates, surgery itself is a treatment modality, not the cause of the condition. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Presentation:** A patient with a history of chronic cold/allergy who reports that their nasal spray "no longer works" or that they need to use it more frequently to breathe. * **Examination:** The nasal mucosa appears **beefy red**, swollen, and granular (unlike the pale/bluish mucosa seen in allergic rhinitis). * **Management:** Immediate cessation of the decongestant, initiation of topical/systemic steroids, and saline douches. * **Key Duration:** Advise patients never to use topical decongestants for more than **5 consecutive days**.

Q: Anterior bowing of the posterior maxillary wall is described as which sign?

Holman Miller sign. **Explanation:** The **Holman-Miller sign** (also known as the antral sign) is a classic radiological feature of **Juvenile Nasopharyngeal Angiofibroma (JNA)**. JNA is a benign but locally aggressive, highly vascular tumor that typically arises in the sphenopalatine foramen of adolescent males. As the tumor grows, it expands into the pterygopalatine fossa, creating pressure that pushes the posterior wall of the maxillary sinus forward. This characteristic **anterior bowing** is best visualized on a lateral skull X-ray or CT scan and is considered pathognomonic for JNA. **Analysis of Incorrect Options:** * **Hennebert sign:** This is a clinical sign seen in Otology. It refers to the occurrence of nystagmus or vertigo triggered by pressure changes in the external auditory canal (e.g., using a Siegel’s speculum). It is typically seen in Meniere’s disease or syphilis (due to a hypermobile stapes). * **Holsky sign / Honeybell sign:** These are distractors and do not represent recognized clinical or radiological signs in ENT. **High-Yield Clinical Pearls for JNA:** * **Demographics:** Almost exclusively seen in adolescent males (10–20 years). * **Triad:** Profuse recurrent epistaxis, nasal obstruction, and a mass in the nasopharynx. * **Diagnosis:** Diagnosis is primarily clinical and radiological. **Biopsy is contraindicated** due to the risk of life-threatening hemorrhage. * **Staging:** Often involves the Fisch or Radkowski classification systems. * **Treatment:** Surgical excision (e.g., Transpalatal or Endoscopic approach) preceded by preoperative embolization to reduce blood loss.

Question 1

Which of the following is FALSE regarding a nasolabial cyst?

Accepted Answer

It is odontogenic in origin

Answer

Also known as a Klestadt cyst

Answer

It is treated by excision

Answer

It is seen in the region of the nasolabial fold

Question 2

A black necrotic mass is seen in the nose of an elderly diabetic patient. What is the most probable diagnosis?

Accepted Answer

Mucormycosis

Answer

Lupus vulgaris

Answer

Aspergillosis

Answer

Pseudomonas infection

Question 3

Which bone is commonly fractured in facial injuries?

Accepted Answer

Nasal bones

Answer

Nasoethmoid bone

Answer

Zygomatic bone

Answer

Mandible

Question 4

While playing football, an 18-year-old boy sustained a blow to the nose, resulting in deviation of the nose. On examination, the nasal septum was not deviated. Which of the following statements is true about the patient?

Accepted Answer

He should be taken for closed reduction as soon as the overlying edema subsides.

Answer

He should be taken up for open reduction one week later.

Answer

Septoplasty should be done in the same sitting.

Answer

He is having a Jarjavay fracture.

Question 5

Perforation of the nasal septum is not seen in which of the following conditions?

Accepted Answer

Rhinosporidiosis

Answer

Tuberculosis

Answer

Syphilis

Answer

Leprosy

Question 6

Which of the following statements regarding fungal sinusitis is true?

Accepted Answer

Surgery is required for treatment.

Answer

The most common organism is Aspergillus niger.

Answer

Amphotericin B IV is used for invasive fungal sinusitis.

Answer

A hazy appearance on X-ray with radio-opacity is seen.

Question 7

Allergic fungal sinusitis is typically seen in which patient population?

Accepted Answer

Immunocompetent patients

Answer

Immunocompromised patients

Answer

Diabetic patients

Answer

None of the above

Question 8

A child has a retained disc battery in the nose. What is the most important consideration in its 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 9

Rhinitis medicamentosa is due to which of the following?

Accepted Answer

Nasal decongestants

Answer

Steroids

Answer

Antihistamines

Answer

Surgery

Question 10

Anterior bowing of the posterior maxillary wall is described as which sign?

Accepted Answer

Holman Miller sign

Answer

Hennebert sign

Answer

Holsky sign

Answer

Honeybell sign

Diseases of the Nose and Paranasal Sinuses — MCQs

Diseases of the Nose and Paranasal Sinuses — MCQs

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