Diseases of the Nose and Paranasal Sinuses Practice Questions

Q: Which of the following is NOT true about a septal hematoma?

Leads to a crooked nose. **Explanation:** **1. Why "Leads to a crooked nose" is the correct answer:** A septal hematoma, if left untreated, leads to necrosis of the septal cartilage due to pressure-induced ischemia (the perichondrium is stripped away, depriving the cartilage of its blood supply). This results in the collapse of the nasal dorsum, leading to a **Saddle Nose deformity** (supratip depression), not a crooked nose. A crooked nose is typically the result of a deviated nasal septum (DNS) or nasal bone fractures, rather than the cartilaginous destruction seen in hematomas. **2. Analysis of other options:** * **Can lead to a septal abscess:** This is true. If the stagnant blood in the subperichondrial space becomes secondary infected (commonly by *Staphylococcus aureus*), it progresses to a septal abscess. * **Occurs due to trauma:** This is the most common etiology. It usually follows nasal trauma (accidental or surgical, like SMR/Septoplasty) which causes the rupture of small vessels in the mucoperichondrium. * **Is a bilateral condition:** This is true. While it can be unilateral, it is frequently bilateral because the septal cartilage often fractures during trauma, allowing blood to extravasate to the contralateral side under the perichondrium. **3. Clinical Pearls for NEET-PG:** * **Clinical Presentation:** A "cherry-red," smooth, boggy swelling on the septum that does not shrink with topical vasoconstrictors. * **Management:** Immediate **Incision and Drainage (I&D)** followed by firm nasal packing to prevent re-accumulation. * **Complications:** Saddle nose deformity (most common), septal abscess, and cavernous sinus thrombosis (rare but fatal). * **Key Distinction:** A hematoma is a surgical emergency; a deviated septum is not.

Q: Apple jelly nodules on the nasal septum are found in which condition?

Lupus Vulgaris. **Explanation:** **Lupus Vulgaris** is a chronic, progressive form of cutaneous tuberculosis caused by *Mycobacterium tuberculosis*. When it involves the nose, it typically affects the **nasal vestibule and the cartilaginous part of the nasal septum**. The characteristic clinical finding is the presence of **"Apple jelly nodules"**—small, reddish-brown, translucent tubercles. These are best visualized using **diascopy** (pressing a glass slide against the lesion), which causes the surrounding erythema to blanch, revealing the yellowish-brown "apple jelly" appearance of the underlying granuloma. **Analysis of Incorrect Options:** * **Tuberculosis (Systemic/Ulcerative):** While Lupus Vulgaris is a form of TB, "Apple jelly nodules" are specifically pathognomonic for the indolent, cutaneous/mucosal form (Lupus Vulgaris). Primary nasal TB usually presents as an ulcer or a friable mass. * **Syphilis:** Nasal syphilis typically presents with a "saddle nose" deformity (due to destruction of the bony septum) or gummas. It does not produce apple jelly nodules. * **Rhinoscleroma:** Caused by *Klebsiella rhinoscleromatis*, it is characterized by three stages: Catarrhal, Atrophic, and Nodular/Hypertrophic. Key histological findings include **Mikulicz cells** and **Russell bodies**, not apple jelly nodules. **High-Yield Clinical Pearls for NEET-PG:** * **Lupus Vulgaris:** Most common site is the nose/face; can lead to "beak-like" deformity due to destruction of the nasal alae. * **Diascopy:** The gold-standard clinical test to identify apple jelly nodules. * **Nasal Septum Perforation:** Lupus Vulgaris affects the **cartilaginous** septum, whereas Syphilis affects the **bony** septum.

Q: Sphenoid sinusitis pain is referred most commonly to:

Occiput. **Explanation:** The sphenoid sinus is located deep within the skull base, directly beneath the optic chiasm and pituitary gland. Due to its deep-seated anatomical position and its innervation by the **posterior ethmoidal nerve** (a branch of the ophthalmic division of the Trigeminal nerve), the pain of sphenoid sinusitis is typically described as a deep, boring ache. **1. Why Occiput is Correct:** Pain from the sphenoid sinus is classically referred to the **occiput** (back of the head) or the **vertex** (top of the head). While both are possible, the **occiput** is the most frequently cited site in standard ENT textbooks (like Dhingra) for referred sphenoid pain. This occurs because the sensory fibers travel via the trigeminal nerve, but the pain is perceived in the dermatomes of the scalp supplied by the cervical nerves (C2-C3) due to central convergence. **2. Why Incorrect Options are Wrong:** * **Vertex:** While a common site for sphenoid pain, it is considered secondary to the occiput in frequency for exam purposes. * **Frontal region:** This is the classic site for **Frontal sinusitis** (often showing a "periodic" or "office headache" pattern). * **Temporal region:** Pain here is more characteristic of **Maxillary sinusitis** or dental issues, though it can occasionally occur in sphenoiditis. **Clinical Pearls for NEET-PG:** * **Frontal Sinusitis:** Pain is typically over the forehead, worse in the morning and improving by afternoon (**Office Headache**). * **Maxillary Sinusitis:** Pain is referred to the upper teeth, cheek, or infraorbital region. * **Ethmoid Sinusitis:** Pain is felt at the bridge of the nose or the medial canthus of the eye. * **Sphenoid Sinusitis:** Often called the "forgotten sinus"; isolated involvement is rare but dangerous due to proximity to the cavernous sinus.

Q: A patient with a sinus infection develops bilateral proptosis, chemosis, and fever. What is the most likely diagnosis?

Cavernous sinus thrombosis. ### Explanation The correct diagnosis is **Cavernous Sinus Thrombosis (CST)**. **1. Why Cavernous Sinus Thrombosis is correct:** CST is a life-threatening complication of infections in the "danger area" of the face or the paranasal sinuses (most commonly the ethmoid or sphenoid sinuses). The infection spreads via the retrograde flow of the valveless ophthalmic veins. The hallmark of CST is **bilateral involvement**. While it may start unilaterally, it rapidly becomes bilateral due to the communication between the two cavernous sinuses via the intercavernous sinuses. The clinical triad of **proptosis** (bulging eyes), **chemosis** (conjunctival edema), and **ophthalmoplegia** (cranial nerves III, IV, and VI involvement) combined with systemic signs like high-grade fever is diagnostic. **2. Why the other options are incorrect:** * **Lateral Sinus Thrombosis:** Usually a complication of chronic suppurative otitis media (CSOM). It presents with "picket-fence" fever and headache but does not cause proptosis or chemosis. * **Frontal Lobe Abscess:** An intracranial complication of frontal sinusitis. It presents with features of raised intracranial pressure (headache, vomiting, papilledema) and altered mental status, not orbital symptoms. * **Meningitis:** Presents with fever, headache, and neck rigidity (Kernig’s/Brudzinski’s signs). While it can coexist with CST, it does not explain the proptosis and chemosis. **3. High-Yield Clinical Pearls for NEET-PG:** * **Most common cause:** Staphylococcus aureus. * **Earliest sign:** Paralysis of the **Abducens nerve (CN VI)** because it runs centrally through the sinus. * **Differential Diagnosis:** Orbital Cellulitis (usually unilateral; CST is rapidly bilateral). * **Investigation of choice:** Contrast-enhanced MRI (MRV is highly sensitive). * **Treatment:** High-dose intravenous antibiotics and anticoagulants.

Q: Which test is used to measure nasal mucociliary clearance?

Saccharin test. **Explanation:** **1. Correct Answer: A. Saccharin test** The **Saccharin test** is the standard clinical method used to assess **nasal mucociliary clearance (MCC)**. In this test, a small particle of saccharin (approximately 1 mm) is placed on the anterior end of the inferior turbinate. The patient is instructed to sit still and not sneeze or blow their nose. The time taken for the patient to perceive a sweet taste in the throat is recorded. * **Normal MCC time:** 7 to 15 minutes. * **Significance:** A prolonged time (>20–30 minutes) indicates impaired ciliary function, commonly seen in conditions like **Kartagener’s syndrome**, Primary Ciliary Dyskinesia, or chronic rhinosinusitis. **2. Why other options are incorrect:** * **B. SISI test (Short Increment Sensitivity Index):** This is an audiological test used in **Otology** to differentiate cochlear hearing loss (e.g., Meniere’s disease) from retrocochlear lesions. It detects the patient's ability to perceive 1 dB increments in sound intensity. * **C. Handkerchief test:** This is a bedside clinical test used to differentiate **CSF Rhinorrhea** from nasal discharge. CSF does not stiffen a handkerchief upon drying (due to low protein), whereas nasal mucus makes it stiff. * **D. Endoscopy:** Diagnostic Nasal Endoscopy (DNE) is used for anatomical visualization of the nasal cavity, meatuses, and sinus ostia, but it does not objectively measure the functional speed of cilia. **Clinical Pearls for NEET-PG:** * **Kartagener’s Triad:** Situs inversus, Bronchiectasis, and Sinusitis (due to ciliary immotility). * **Other MCC tests:** Radioisotope-labeled resin bolus (more accurate but expensive) and Charcoal powder test. * **Young’s Syndrome:** Characterized by obstructive azoospermia and chronic sinopulmonary infections, but with *normal* ciliary structure.

Q: Dennie-Morgan lines are seen in which of the following conditions?

Allergic rhinitis. **Explanation:** **Dennie-Morgan lines** (also known as Dennie-Morgan folds) are characteristic infraorbital skin folds or wrinkles located just below the lower eyelid. **Why Allergic Rhinitis is Correct:** In patients with **Allergic Rhinitis**, chronic inflammation and persistent congestion of the nasal mucosa lead to venous stasis. This causes edema and repetitive rubbing of the eyes due to itching. The resulting chronic swelling and mechanical trauma lead to the formation of these double or accentuated creases below the lower eyelid. They are a classic physical sign of atopy, often seen alongside "Allergic Shiners" (dark circles under the eyes). **Analysis of Incorrect Options:** * **Atrophic Rhinitis:** Characterized by foul-smelling discharge (ozaena), crusting, and atrophy of the nasal mucosa/turbinates. It does not typically present with infraorbital skin changes. * **Adenoid Facies:** Associated with chronic mouth breathing due to adenoid hypertrophy. Features include an open-mouthed expression, elongated face, high-arched palate, and crowded teeth, but not Dennie-Morgan lines. * **Rhinophyma:** A late-stage complication of Rosacea involving hypertrophy of the sebaceous glands of the nose, leading to a bulbous, "potato-like" appearance. **High-Yield Clinical Pearls for NEET-PG:** * **Allergic Salute:** A characteristic gesture where the patient pushes the tip of the nose upward with the palm to relieve itching and open the airway. * **Transverse Nasal Crease:** A horizontal line across the bridge of the nose caused by the repetitive "Allergic Salute." * **Allergic Shiners:** Dark, puffy infraorbital discoloration due to venous congestion in the paranasal sinuses. * **Histology:** Look for **Eosinophils** on nasal smear in allergic rhinitis.

Question 1

Which of the following is NOT true about a septal hematoma?

Accepted Answer

Leads to a crooked nose

Answer

Can lead to a septal abscess

Answer

Occurs due to trauma

Answer

Is a bilateral condition

Question 2

What is the treatment of choice in recurrent epistaxis in a patient with hereditary hemorrhagic telangiectasia?

Accepted Answer

Septal dermatoplasty

Answer

Anterior ethmoidal artery ligation

Answer

External carotid artery ligation

Answer

Internal carotid artery ligation

Question 3

Apple jelly nodules on the nasal septum are found in which condition?

Accepted Answer

Lupus Vulgaris

Answer

Tuberculosis

Answer

Syphilis

Answer

Rhinoscleroma

Question 4

A 70-year-old patient presents with epistaxis and hypertension (BP 200/100 mm Hg). On examination, no active bleeding is noted. What is the next step in management?

Accepted Answer

Observation

Answer

Internal maxillary artery ligation

Answer

Anterior and posterior nasal pack

Answer

Anterior nasal pack

Question 5

Sphenoid sinusitis pain is referred most commonly to:

Accepted Answer

Occiput

Answer

Vertex

Answer

Frontal region

Answer

Temporal region

Question 6

Ozaena is also known as which of the following conditions?

Accepted Answer

Atrophic rhinitis

Answer

Hypertrophic rhinitis

Answer

Vasomotor rhinitis

Answer

Allergic rhinitis

Question 7

What is the treatment of choice in recurrent epistaxis in a patient with hereditary hemorrhagic telangiectasia?

Accepted Answer

Septal dermoplasty

Answer

Anterior ethmoidal artery ligation

Answer

External carotid artery ligation

Answer

Internal carotid artery ligation

Question 8

A patient with a sinus infection develops bilateral proptosis, chemosis, and fever. What is the most likely diagnosis?

Accepted Answer

Cavernous sinus thrombosis

Answer

Lateral sinus thrombosis

Answer

Frontal lobe abscess

Answer

Meningitis

Question 9

Which test is used to measure nasal mucociliary clearance?

Accepted Answer

Saccharin test

Answer

SISI test

Answer

Handkerchief test

Answer

Endoscopy

Question 10

Dennie-Morgan lines are seen in which of the following conditions?

Accepted Answer

Allergic rhinitis

Answer

Atrophic rhinitis

Answer

Adenoid facies

Answer

Rhinophyma

Diseases of the Nose and Paranasal Sinuses — MCQs

Diseases of the Nose and Paranasal Sinuses — MCQs

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