Rhinology — MCQs

Rhinology Indian Medical PG Practice Questions and MCQs

Question 71: Recurrent polyps are seen in which of the following?

A. Antrochoanal polyp
B. Ethmoidal polyp (Correct Answer)
C. Nasal polyp
D. Hypertrophic turbinate

Explanation: **Explanation:** The correct answer is **Ethmoidal polyp**. The tendency for recurrence is a hallmark clinical feature that distinguishes ethmoidal polyps from other nasal masses. **1. Why Ethmoidal Polyp is correct:** Ethmoidal polyps are typically bilateral, multiple, and associated with chronic mucosal inflammation or systemic conditions (like allergy, asthma, or aspirin sensitivity). Because the underlying pathology involves widespread inflammation of the ethmoidal air cell mucosa, simple surgical removal often leaves behind inflamed tissue or fails to address the systemic trigger. This leads to a **high recurrence rate**, especially if the underlying inflammatory condition is not managed with long-term topical or systemic steroids. **2. Why the other options are incorrect:** * **Antrochoanal polyp:** These are usually solitary and unilateral, arising from the maxillary sinus. If the "stalk" and the antral component are completely removed via an endoscopic approach (Middle Meatal Antrostomy), the recurrence rate is significantly lower than that of ethmoidal polyps. * **Nasal polyp:** This is a generic term. While ethmoidal polyps are a type of nasal polyp, the question specifically tests the clinical behavior of the two main types (Ethmoidal vs. Antrochoanal). Ethmoidal is the more precise answer regarding recurrence. * **Hypertrophic turbinate:** This is a structural enlargement of the turbinate bone or mucosa (often the inferior turbinate) due to chronic rhinitis. It is not a neoplastic or polypoid growth and does not "recur" in the same pathological sense as polyps. **Clinical Pearls for NEET-PG:** * **Ethmoidal Polyps:** Bilateral, multiple, pearly white, seen in adults, high recurrence. * **Antrochoanal Polyps:** Unilateral, solitary, hourglass-shaped, seen in children/young adults, low recurrence. * **Sampson’s Triad:** Nasal polyposis + Bronchial Asthma + Aspirin sensitivity (associated with severe recurrence). * **Woakes’ Syndrome:** Recurrent ethmoidal polyps in childhood leading to broadening of the nasal bridge.

Question 72: The Eustachian tube opens into the nasopharynx approximately 1 cm behind which anatomical landmark?

A. Tonsil
B. Posterior end of superior turbinate
C. Posterior end of middle turbinate
D. Posterior end of inferior turbinate (Correct Answer)

Explanation: **Explanation:** The **Eustachian tube (Pharyngotympanic tube)** is a fibrocartilaginous structure that connects the middle ear to the nasopharynx. Its pharyngeal opening is located on the lateral wall of the nasopharynx, situated approximately **1 to 1.25 cm behind and slightly below the posterior end of the inferior turbinate**. **Why Option D is Correct:** The inferior turbinate is the largest and most inferiorly placed turbinate in the nasal cavity. The Eustachian tube opening is found at the level of the hard palate, which aligns horizontally with the inferior meatus and the posterior tip of the inferior turbinate. This anatomical relationship is a crucial landmark for clinical procedures like Eustachian tube catheterization. **Analysis of Incorrect Options:** * **Option A (Tonsil):** The palatine tonsils are located in the oropharynx between the palatoglossal and palatopharyngeal arches, well below the level of the nasopharyngeal opening. * **Option B & C (Superior and Middle Turbinates):** These structures are located higher in the nasal vault. The superior and middle turbinates relate more closely to the ethmoid sinuses and the sphenoethmoidal recess, far above the functional level of the Eustachian tube orifice. **High-Yield Clinical Pearls for NEET-PG:** * **Torus Tubarius:** The elevated posterior margin of the Eustachian tube opening, formed by the underlying medial end of the tubal cartilage. * **Fossa of Rosenmüller:** A deep recess located immediately behind the torus tubarius; it is the **most common site for Nasopharyngeal Carcinoma**. * **Muscle of Opening:** The **Tensor Veli Palatini** (supplied by the mandibular nerve, V3) is the primary muscle responsible for opening the tube during swallowing or yawning. * **Length:** The adult Eustachian tube is approximately 36 mm long (1/3 bony, 2/3 cartilaginous).

Question 73: Sphenopalatine neuralgia is also known as:

A. Lower half headache.
B. Sluder's headache.
C. Horton's syndrome.
D. All of the above. (Correct Answer)

Explanation: **Explanation:** **Sphenopalatine Neuralgia**, also known as **Sluder’s Neuralgia**, is a clinical entity characterized by unilateral facial pain, often associated with autonomic symptoms like nasal congestion and lacrimation. It is caused by irritation or compression of the sphenopalatine ganglion (SPG), located in the pterygopalatine fossa. **Why "All of the above" is correct:** * **Sluder’s Headache:** Named after Greenfield Sluder, who first described the condition in 1908. He attributed the pain to irritation of the sphenopalatine ganglion secondary to nasal mucosal inflammation or septal contact points. * **Lower Half Headache:** This term is used because the pain typically involves the "lower half" of the face—specifically the root of the nose, the orbit, the maxilla, and sometimes radiating to the mastoid or neck—sparing the upper forehead. * **Horton’s Syndrome:** While often used as a synonym for Cluster Headache, historical texts and certain classifications have used this eponym interchangeably with sphenopalatine neuralgia due to the overlapping clinical features (unilateral pain and autonomic triggers). **Clinical Pearls for NEET-PG:** * **Trigger Point:** The pain is often triggered by contact between the middle turbinate and the nasal septum (Contact point headache). * **Diagnostic Test:** Topical application of 4% Cocaine or Xylocaine to the sphenopalatine ganglion (located posterior to the middle turbinate) provides immediate relief, confirming the diagnosis. * **Management:** Initial treatment involves medical therapy (NSAIDs, decongestants); refractory cases may require surgical correction of septal deviations or SPG block/radiofrequency ablation. * **Differential Diagnosis:** Must be distinguished from **Vidian Neuralgia** (pain in the nose, face, and ear) and **Trigeminal Neuralgia** (brief, lancinating pain along CN V branches).

Question 74: What is the typical rate of ciliary movement in the nasal mucosa?

A. 1-2 mm/min
B. 2-5 mm/min
C. 5-10 mm/min (Correct Answer)
D. 10-12 mm/min

Explanation: **Explanation:** The nasal mucosa is lined by pseudostratified ciliated columnar epithelium, which plays a vital role in the **mucociliary clearance (MCC)** mechanism—often referred to as the "conveyor belt" of the nose. **1. Why Option C is Correct:** The typical rate of ciliary movement in a healthy adult nasal mucosa is **5–10 mm/min**. This speed is essential for transporting the overlying mucus blanket (containing trapped dust, pathogens, and debris) toward the nasopharynx, where it is swallowed. The cilia beat rhythmically at a frequency of 10–15 times per second, consisting of a rapid "effective stroke" and a slower "recovery stroke." **2. Analysis of Incorrect Options:** * **Option A (1-2 mm/min):** This rate is too slow and is usually seen in pathological states, such as Kartagener’s syndrome or severe acute rhinosinusitis, where MCC is compromised. * **Option B (2-5 mm/min):** While closer to the range, it represents the lower limit of normal or a slightly sluggish clearance. * **Option D (10-12 mm/min):** This is higher than the average physiological range for nasal cilia, though such speeds may occasionally be reached under specific sympathetic stimulation. **3. High-Yield Clinical Pearls for NEET-PG:** * **Direction of Flow:** In the anterior part of the nasal cavity, mucus moves toward the nares; however, in the posterior two-thirds, it moves toward the **nasopharynx**. * **Saccharin Test:** Used clinically to measure MCC time. A normal result is **under 20 minutes**. * **Factors affecting Ciliary movement:** Ciliary action is inhibited by extreme pH, smoking, dehydration, and drugs like cocaine or adrenaline (in high concentrations). * **Structure:** Cilia have a **9+2 arrangement** of microtubules. A defect in the dynein arms leads to **Primary Ciliary Dyskinesia (PCD)**.

Question 75: A 12-year-old child presents with bilateral nasal pink masses. What is the most important investigation prior to undertaking surgery?

A. Ultrasound
B. FNAC (Fine Needle Aspiration Cytology)
C. Biopsy
D. Contrast CT Scan (Correct Answer)

Explanation: **Explanation:** The clinical presentation of a child with bilateral nasal masses (likely **Antrochoanal polyps** or **Encephaloceles**) necessitates a cautious approach. The most important investigation prior to surgery is a **Contrast-Enhanced CT (CECT) Scan**. **Why Contrast CT is the Correct Choice:** 1. **Rule out Intracranial Extension:** In children, a midline or nasal mass may be a **Meningoencephalocele** (herniation of brain matter/meninges through a skull base defect). A CT scan is vital to assess the integrity of the cribriform plate and skull base. 2. **Vascularity:** If the mass is an **Angiofibroma** (though usually unilateral and in older adolescent males), contrast helps assess the vascularity and extent of the lesion. 3. **Surgical Mapping:** It defines the bony anatomy of the paranasal sinuses, identifying the origin of the polyp and any associated bone erosion or expansion. **Why Other Options are Incorrect:** * **Biopsy/FNAC:** These are **contraindicated** as initial steps. If the mass is an Encephalocele, a biopsy can lead to a **CSF leak and Meningitis**. If the mass is an Angiofibroma, it can cause **torrential, life-threatening hemorrhage**. * **Ultrasound:** It has limited utility in the nasal cavity due to the surrounding bony structures, which prevent adequate visualization of deep-seated masses or skull base defects. **Clinical Pearls for NEET-PG:** * **Golden Rule:** Never biopsy a nasal mass in a child/adolescent without imaging to rule out Encephalocele or Angiofibroma. * **Investigation of Choice (IOC):** For Sinonasal Polyposis, the IOC is **CT Scan of Paranasal Sinuses (PNS)**. * **Meningoencephalocele:** Classically presents with a positive **Furstenberg’s Test** (pulsation/expansion of the mass upon compression of the internal jugular vein).

Question 76: Sluder's neuralgia includes all except:

A. Neuralgic pain in the upper half of face (Correct Answer)
B. Rhinorrhea
C. Increased lacrimation
D. Nasal stuffiness

Explanation: **Explanation:** **Sluder’s Neuralgia**, also known as **Sphenopalatine Ganglion (SPG) Neuralgia**, is a clinical syndrome caused by irritation or compression of the sphenopalatine ganglion. This ganglion is located in the pterygopalatine fossa and carries sensory, sympathetic, and parasympathetic fibers. **Why Option A is the correct answer:** The hallmark of Sluder’s neuralgia is pain involving the **lower half of the face**, specifically around the root of the nose, the orbit, the maxilla, and sometimes radiating to the neck and shoulder. Neuralgic pain in the **upper half of the face** (forehead and scalp) is characteristic of **Charlin’s Neuralgia** (Naso-ciliary neuralgia), not Sluder’s. Therefore, Option A is the "except" statement. **Why the other options are incorrect:** The sphenopalatine ganglion is the "secretomotor" center for the nasal and lacrimal glands. Irritation of the parasympathetic fibers within the ganglion leads to autonomic symptoms, which are essential for the diagnosis: * **Option B & D:** Parasympathetic overactivity causes vasodilation and glandular secretion, leading to **nasal stuffiness** and **rhinorrhea**. * **Option C:** It also stimulates the lacrimal gland, resulting in **increased lacrimation**. **High-Yield Clinical Pearls for NEET-PG:** * **Contact Point Theory:** Sluder’s neuralgia is often attributed to a deviated nasal septum (DNS) or a mucosal contact point (e.g., middle turbinate touching the septum). * **Diagnosis:** Relief of pain upon topical application of cocaine or lidocaine to the SPG (located posterior to the middle turbinate) confirms the diagnosis. * **Differential:** Distinguish from **Charlin’s Neuralgia**, which presents with pain at the inner canthus of the eye, watery rhinorrhea, and keratitis/iritis.

Question 77: The Lynch-Howarth procedure is not used for which of the following?

A. Draining a frontal mucocele
B. Removing a frontal osteoma
C. Repairing a cerebrospinal fluid (CSF) leak (Correct Answer)
D. Treating epistaxis

Explanation: The **Lynch-Howarth procedure** is a classic external fronto-ethmoidectomy. It involves a curved incision between the inner canthus and the bridge of the nose (Lynch’s incision) to access the frontal and ethmoid sinuses. ### **Explanation of the Correct Answer** **C. Repairing a cerebrospinal fluid (CSF) leak:** This is the correct answer because the Lynch-Howarth procedure provides limited visualization of the skull base and is an external approach. Modern CSF leak repairs are almost exclusively performed using **Endoscopic Sinus Surgery (ESS)**, which allows for better visualization, precise graft placement, and higher success rates without external scarring. ### **Analysis of Incorrect Options** * **A. Draining a frontal mucocele:** Historically, this was the gold standard. While endoscopic drainage is now preferred, the Lynch-Howarth approach is still indicated for mucoceles that are laterally placed or inaccessible endoscopically. * **B. Removing a frontal osteoma:** Small to medium-sized osteomas, especially those located in the floor or posterior wall of the frontal sinus, can be effectively removed via this external approach. * **D. Treating epistaxis:** The Lynch-Howarth incision provides direct access to the **Anterior Ethmoidal Artery (AEA)**. Ligation of the AEA via this approach is a recognized surgical step in managing refractory posterior epistaxis. ### **High-Yield Clinical Pearls for NEET-PG** * **Incision Site:** The incision is made in the "medial canthal area," avoiding the angular vein. * **Key Landmark:** The **fronto-ethmoidal suture line** is the most important landmark; it marks the level of the cribriform plate (skull base). * **Complication:** A common complication of this procedure is **diplopia**, caused by the displacement of the trochlea (superior oblique muscle pulley). * **Current Status:** It has largely been replaced by the **Draf procedures** (Endoscopic Frontal Sinusotomy).

Question 78: In case of uncontrolled epistaxis, ligation of the internal maxillary artery is to be done in the:

A. Maxillary antrum
B. Pterygopalatine fossa (Correct Answer)
C. At the neck
D. Medial wall of orbit

Explanation: **Explanation:** The **internal maxillary artery (IMA)** is the most common source of severe posterior epistaxis, specifically through its terminal branch, the sphenopalatine artery. **1. Why Pterygopalatine Fossa is Correct:** The IMA enters the **pterygopalatine fossa** through the pterygomaxillary fissure. This is the anatomical site where the artery divides into its terminal branches (including the sphenopalatine and greater palatine arteries). Ligation at this site is highly effective because it cuts off the blood supply close to the source of the bleed. Historically, this was done via the **Caldwell-Luc approach** (transantral), where the posterior wall of the maxillary sinus is removed to access the fossa. **2. Why Other Options are Incorrect:** * **Maxillary Antrum:** While the surgeon passes *through* the antrum to reach the artery, the ligation itself occurs in the pterygopalatine fossa located posterior to the antrum. * **At the Neck:** This refers to the ligation of the **External Carotid Artery (ECA)**. While the IMA is a branch of the ECA, ligating the ECA in the neck is less effective due to extensive collateral circulation from the opposite side and the internal carotid system. * **Medial Wall of Orbit:** This is the site for ligating the **Anterior and Posterior Ethmoidal arteries** (branches of the Ophthalmic artery/Internal Carotid system), not the IMA. **Clinical Pearls for NEET-PG:** * **Woodruff’s Plexus:** The most common site for posterior epistaxis, supplied primarily by the sphenopalatine artery. * **Gold Standard:** Currently, **Endoscopic Sphenopalatine Artery Ligation (ESPAL)** has largely replaced transantral IMA ligation as it is less invasive and has fewer complications (like infraorbital nerve injury). * **Order of Ligation:** If conservative measures fail: Sphenopalatine > Internal Maxillary > External Carotid.

Question 79: What is true about juvenile nasopharyngeal angiofibroma?

A. Hormones are not used in treatment.
B. Surgery is the treatment of choice.
C. It is a malignant tumor.
D. Increased incidence in females. (Correct Answer)

Explanation: **Explanation:** Juvenile Nasopharyngeal Angiofibroma (JNA) is a histologically benign but clinically aggressive, highly vascular tumor. **Analysis of Options:** * **Correct Answer (D): Increased incidence in females.** *Note: There appears to be a discrepancy in the provided key.* In standard medical literature, JNA is **exclusively seen in adolescent males**. If the question identifies "Increased incidence in females" as correct, it is likely a "false" statement being tested as the "true" answer in a specific recall context, or there is a typographical error in the key. **Clinically, JNA is testosterone-dependent and almost never occurs in females.** If a female presents with similar symptoms, a chromosomal study (karyotyping) is often indicated to rule out genetic anomalies. * **Option A (Incorrect):** Hormones **are** used in treatment. Since the tumor is androgen-dependent, estrogen therapy (e.g., Stilbestrol) or Flutamide can be used pre-operatively to reduce the size and vascularity of the tumor. * **Option B (Incorrect):** While surgery is the definitive treatment, the "treatment of choice" for large or intracranial extensions may involve radiotherapy. However, in modern practice, **surgical excision** (often via endoscopic or transantral approaches) preceded by **pre-operative embolization** is the gold standard. * **Option C (Incorrect):** It is a **benign** tumor. It does not metastasize, though it is locally invasive and can erode the base of the skull. **High-Yield Clinical Pearls for NEET-PG:** * **Origin:** Most commonly from the superior margin of the **sphenopalatine foramen**. * **Classic Triad:** Adolescent male + Profuse recurrent epistaxis + Nasal obstruction. * **Holman-Miller Sign:** Anterior bowing of the posterior wall of the maxillary sinus seen on CT/MRI. * **Frog Face Deformity:** Occurs due to expansion into the ethmoids and proptosis. * **Contraindication:** **Biopsy is strictly contraindicated** in the OPD due to the risk of torrential hemorrhage. Diagnosis is clinical and radiological.

Question 80: What is the most common cause of recurrent epistaxis in a 15-year-old female?

A. Juvenile nasopharyngeal angiofibroma
B. Rhinosporidiosis
C. Foreign body
D. Hematopoietic disorder (Correct Answer)

Explanation: **Explanation:** The correct answer is **Hematopoietic disorder**. In a **15-year-old female**, recurrent epistaxis is most frequently associated with systemic conditions rather than local anatomical growths. At this age and gender, **von Willebrand Disease (vWD)** is the most common inherited bleeding disorder leading to mucosal bleeding. Additionally, the onset of menstruation (menarche) often highlights underlying hematopoietic issues like idiopathic thrombocytopenic purpura (ITP) or platelet dysfunction, which manifest as recurrent nosebleeds. **Analysis of Incorrect Options:** * **A. Juvenile Nasopharyngeal Angiofibroma (JNA):** While JNA is a classic cause of profuse epistaxis in adolescents, it occurs **exclusively in males**. The question specifies a female patient, making this diagnosis highly improbable. * **B. Rhinosporidiosis:** This fungal infection (caused by *Rhinosporidium seeberi*) presents as a leafy, friable, strawberry-like polyp. While it causes bleeding, it is geographically restricted (endemic to South India/Sri Lanka) and is less common than systemic causes in this demographic. * **C. Foreign Body:** This is the most common cause of **unilateral, foul-smelling, blood-stained nasal discharge** in the **pediatric** age group (usually <5 years), not recurrent epistaxis in adolescents. **Clinical Pearls for NEET-PG:** * **Most common cause of epistaxis (Overall):** Trauma (Finger picking/Little’s area). * **Most common site of epistaxis:** Little’s area (Kiesselbach's plexus). * **Most common site for posterior epistaxis:** Woodruff’s plexus (Sphenopalatine artery). * **JNA Triad:** Adolescent male + Recurrent profuse epistaxis + Nasal obstruction. * **Investigation of choice for systemic epistaxis:** Complete Blood Count (CBC) and Coagulation profile (PT/APTT/INR).

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Rhinology — MCQs

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