Rhinology — MCQs

Rhinology Indian Medical PG Practice Questions and MCQs

Question 61: What is the most common cause of epistaxis (nosebleed) in children?

A. Digital trauma (nose picking) (Correct Answer)
B. Hypertension
C. Nasal tumor
D. Coagulopathy

Explanation: **Explanation:** **1. Why Digital Trauma is Correct:** Digital trauma, or nose picking, is the most common cause of epistaxis in children. The underlying anatomical reason is the vulnerability of **Little’s area** (Kiesselbach’s plexus) located on the anteroinferior part of the nasal septum. In children, the overlying mucous membrane is thin, and the plexus—formed by the anastomosis of five arteries—is superficial. Frequent picking or crusting leads to mucosal excoriation and rupture of these fragile vessels. **2. Analysis of Incorrect Options:** * **Hypertension:** While a common cause of epistaxis in the **elderly** (typically presenting as posterior epistaxis), it is an extremely rare cause in the pediatric population. * **Nasal Tumor:** Though tumors like Juvenile Nasopharyngeal Angiofibroma (JNA) cause profuse epistaxis, they are rare and usually seen in adolescent males, not the general pediatric population. * **Coagulopathy:** Bleeding disorders (e.g., Von Willebrand disease or Hemophilia) can cause epistaxis, but they are statistically less frequent than local trauma. They should be suspected only if bleeding is recurrent, prolonged, or associated with systemic bruising. **3. NEET-PG High-Yield Pearls:** * **Most common site of epistaxis:** Little’s area (90% of cases). * **Arteries forming Kiesselbach’s Plexus:** Sphenopalatine, Greater palatine, Superior labial, and Anterior ethmoidal arteries. (Note: Posterior ethmoidal is *not* a part of it). * **First-aid Management:** **Trotter’s Method** (Patient sits up, leans forward, and pinches the soft part of the nose for 10 minutes). * **Woodruff’s Plexus:** The most common site for **posterior epistaxis**, located under the posterior end of the inferior turbinate.

Question 62: Mikulicz cells and Russell bodies are characteristic of which condition?

A. Rhinoscleroma (Correct Answer)
B. Rhinosporidiosis
C. Plasma cell disorder
D. Lethal midline granuloma

Explanation: **Explanation:** **Rhinoscleroma** is a chronic granulomatous disease caused by the Gram-negative bacterium *Klebsiella rhinoscleromatis* (Frisch bacillus). It typically affects the nose but can involve the entire respiratory tract. The diagnosis is confirmed by the presence of two pathognomonic histological features: 1. **Mikulicz Cells:** These are large, foamy, vacuolated histiocytes (macrophages) that contain the causative bacilli. 2. **Russell Bodies:** These are eosinophilic, hyaline-like inclusions found in plasma cells, representing accumulated immunoglobulin. **Analysis of Incorrect Options:** * **Rhinosporidiosis:** Caused by *Rhinosporidium seeberi*. Histology shows large, thick-walled **sporangia** containing numerous endospores, typically presenting as a leafy, friable, strawberry-like nasal mass. * **Plasma Cell Disorder:** While Russell bodies can be seen in multiple myeloma or plasmacytomas due to overproduction of globulins, Mikulicz cells are absent. Rhinoscleroma is the specific clinical context where both are found together. * **Lethal Midline Granuloma:** Now largely classified as **NK/T-cell lymphoma**, it is characterized by extensive tissue necrosis and polymorphic cellular infiltrates, not Mikulicz cells. **High-Yield Clinical Pearls for NEET-PG:** * **Stages of Rhinoscleroma:** Atrophic stage (mimics atrophic rhinitis) → Granulomatous stage (nodule formation) → Cicatricial stage (adhesions and stenosis). * **Drug of Choice:** Streptomycin and Tetracycline are traditionally used; Ciprofloxacin is also highly effective. * **Biopsy:** This is the gold standard for diagnosis. * **Hebra Nose:** The external deformity caused by the granulomatous stage, resulting in a widened, woody-hard nose.

Question 63: Little's area constitutes which of the following?

A. An anastomosis between a branch of the maxillary artery and a branch of the facial artery. (Correct Answer)
B. An anastomosis between two branches of the facial artery.
C. An anastomosis between two branches of the maxillary artery.
D. None of the above.

Explanation: **Explanation:** Little’s area (also known as **Kiesselbach’s plexus**) is located in the anteroinferior part of the nasal septum. It is the most common site for epistaxis (90% of cases) because it is a highly vascular region where four major arteries—representing both the internal and external carotid systems—anastomose. **1. Why Option A is Correct:** The plexus is formed by the confluence of: * **Greater Palatine Artery** (Terminal branch of the **Maxillary Artery**) * **Septal branch of Superior Labial Artery** (Branch of the **Facial Artery**) * **Sphenopalatine Artery** (Terminal branch of the **Maxillary Artery**) * **Anterior Ethmoidal Artery** (Branch of the **Ophthalmic Artery**, which comes from the Internal Carotid) Since the anastomosis involves branches from both the Maxillary and Facial arteries, Option A is the most accurate description among the choices. **2. Why Other Options are Incorrect:** * **Option B & C:** These are incomplete. While branches of the facial and maxillary arteries are involved, the plexus is defined by the *inter-arterial* communication between multiple different arterial systems (Internal and External Carotid), not just branches within a single parent artery. **3. High-Yield Clinical Pearls for NEET-PG:** * **Woodruff’s Plexus:** Located in the posterior part of the nasal cavity (inferior to the posterior end of the middle turbinate); it is the most common site for **posterior epistaxis** and involves the Sphenopalatine artery. * **Retrocolumellar Vein:** A common site for venous bleeding in young people, located just behind the columella. * **Management:** The first-line treatment for active bleeding from Little’s area is **Trotter’s Method** (pressure on the soft part of the nose with the patient leaning forward). If this fails, chemical cautery (Silver Nitrate) or anterior nasal packing is indicated.

Question 64: Modified Young's operation is indicated for which of the following conditions?

A. Atrophic rhinitis (Correct Answer)
B. Allergic rhinitis
C. Acute sinusitis
D. Chronic sinusitis

Explanation: **Explanation:** **Atrophic Rhinitis** is a chronic condition characterized by the atrophy of the nasal mucosa and turbinates, leading to a paradoxically wide nasal cavity, crusting, and a foul smell (ozaena). The primary goal of surgical management is to reduce the volume of the nasal cavity to prevent the drying effect of inspired air. * **Young’s Operation:** This involves the complete surgical closure of both nostrils using circular skin flaps. The nostrils are kept closed for 6–12 months to allow the nasal mucosa to heal and regain its normal ciliary function. * **Modified Young’s Operation:** To avoid the discomfort of total nasal obstruction (mouth breathing and speech changes), this modification involves **partial closure** of the nostrils. A small 3 mm opening is left, which provides symptomatic relief while maintaining some nasal airflow. **Why other options are incorrect:** * **Allergic Rhinitis:** Managed primarily with allergen avoidance, antihistamines, and nasal steroids; surgery is rarely indicated unless there is associated turbinate hypertrophy. * **Acute/Chronic Sinusitis:** These are inflammatory/infectious conditions of the paranasal sinuses. Management involves antibiotics or Functional Endoscopic Sinus Surgery (FESS) to restore drainage. Closing the nostrils would worsen these conditions by trapping secretions. **Clinical Pearls for NEET-PG:** * **Pathognomonic sign:** "Merciful anosmia" (the patient cannot smell their own foul odor). * **Organism:** *Klebsiella ozaenae* (Abel’s bacillus). * **Medical Management:** Nasal douching with alkaline solution (Sodium bicarbonate, Sodium biborate, and Sodium chloride). * **Other Surgeries:** Dermoplasty (Saunders' operation) and narrowing the cavity using sub-mucosal implants (Teflon or cartilage).

Question 65: Posterior epistaxis is commonly seen in which of the following conditions?

A. Children with ethmoidal polyps
B. Foreign bodies of the nose
C. Hypertension (Correct Answer)
D. Nose picking

Explanation: **Explanation:** Epistaxis is classified into anterior and posterior based on the site of bleeding. **Posterior epistaxis** originates from the posterior part of the nasal cavity, most commonly from the **Woodruff’s plexus** (located over the posterior end of the middle turbinate). **Why Hypertension is Correct:** Hypertension is the most common systemic cause of posterior epistaxis, particularly in elderly patients. Chronic high blood pressure leads to **arteriosclerosis** of the sphenopalatine artery and its branches. These brittle vessels lose their ability to contract effectively when ruptured, leading to severe, spontaneous bleeding that often requires packing or surgical intervention. **Analysis of Incorrect Options:** * **A. Children with ethmoidal polyps:** Ethmoidal polyps typically present with nasal obstruction and anosmia; while they may cause blood-tinged discharge, they are not a classic cause of frank posterior epistaxis. * **B. Foreign bodies:** These usually cause unilateral, foul-smelling, purulent nasal discharge in children. While they can cause minor bleeding, it is typically anterior and localized. * **D. Nose picking:** This is the most common cause of **anterior epistaxis** in children and young adults, occurring at **Little’s area (Kiesselbach’s plexus)** on the anterior nasal septum. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site of Epistaxis:** Little’s area (Anterior). * **Most common site of Posterior Epistaxis:** Woodruff’s plexus. * **Artery of Epistaxis:** Sphenopalatine artery (a branch of the Maxillary artery). * **Management:** Anterior bleeding is usually managed by Trotter’s method or chemical cautery; posterior bleeding often requires **Post-nasal packing** or endoscopic ligation of the sphenopalatine artery.

Question 66: What is the presenting symptom of nasal myiasis?

A. Severe irritation with sneezing (Correct Answer)
B. Maggots
C. Nasal pain
D. Impaired olfaction

Explanation: **Explanation:** **Nasal Myiasis** (Peenash) is a condition caused by the infestation of nasal cavities by the larvae of flies, most commonly *Chrysomyia bezziana*. It is typically seen in patients with poor hygiene, atrophic rhinitis, or leprosy. 1. **Why Option A is correct:** The **earliest presenting symptom** of nasal myiasis is intense, severe irritation in the nose accompanied by persistent sneezing. This is a physiological reaction to the movement of the larvae and the toxins they secrete upon entering the nasal vestibule. This stage precedes the more visible signs of infestation. 2. **Why other options are incorrect:** * **Option B (Maggots):** While the presence of maggots is the hallmark of the disease, they are a **sign** (observed by the clinician or patient later) rather than the initial presenting symptom. * **Option C (Nasal pain):** Pain and headache occur later as the larvae invade the paranasal sinuses and cause tissue destruction/secondary infection. * **Option D (Impaired olfaction):** While destruction of the olfactory epithelium can occur in advanced stages, it is not the primary or presenting complaint. **High-Yield Clinical Pearls for NEET-PG:** * **Commonest Fly:** *Chrysomyia bezziana*. * **Predisposing factor:** Atrophic rhinitis (due to the wide nasal room and foul-smelling discharge attracting flies). * **Clinical Features:** Serosanguinous (blood-stained) discharge, foul "putrid" odor, and eventually palatal perforation or orbital complications. * **Management:** * **Initial:** Instillation of **Chloroform and Turpentine oil** (ratio 1:4) to stupefy the maggots. * **Definitive:** Manual removal of maggots using forceps. * **Medical:** Oral **Ivermectin** is highly effective.

Question 67: What is the commonest site of an ivory osteoma?

A. Frontal-ethmoidal region (Correct Answer)
B. Mandible
C. Maxilla
D. Sphenoid

Explanation: **Explanation:** **Osteomas** are the most common benign tumors of the paranasal sinuses. They are slow-growing, encapsulated bony tumors composed of mature bone. **1. Why the Frontal-ethmoidal region is correct:** Statistically, the **frontal sinus** is the most common site for paranasal sinus osteomas (approx. 75-80%), followed by the **ethmoid air cells**. The "ivory" subtype refers to a dense, hard, and mature bone composition (as opposed to the "cancellous" type). These tumors typically arise near the fronto-ethmoidal suture line. While often asymptomatic, they can cause symptoms by obstructing the frontal sinus drainage pathway, leading to secondary sinusitis or a mucocele. **2. Why the other options are incorrect:** * **Mandible & Maxilla:** While osteomas can occur in the gnathic bones (often associated with **Gardner’s Syndrome**), they are significantly less common here than in the paranasal sinuses. * **Sphenoid:** The sphenoid sinus is the rarest site for a paranasal sinus osteoma. **Clinical Pearls for NEET-PG:** * **Radiology:** On a CT scan, an ivory osteoma appears as a very dense, homogeneous, "stone-like" radiopaque mass with well-defined margins. * **Gardner’s Syndrome:** If a patient presents with multiple osteomas (especially of the mandible), always look for **colonic polyposis** (premalignant), soft tissue tumors, and dental abnormalities. * **Management:** Small, asymptomatic osteomas are managed by observation. Surgical excision (Endoscopic or External/Lynch-Howarth) is indicated if the tumor is symptomatic, enlarging, or causing obstruction.

Question 68: Which of the following is NOT true about rhinocerebral mucormycosis?

A. Also known as mucormycosis
B. Treatment with voriconazole (Correct Answer)
C. Angioinvasive
D. Black necrotic turbinates

Explanation: **Explanation:** Rhinocerebral Mucormycosis is a fulminant, life-threatening fungal infection caused by fungi of the order Mucorales (e.g., *Rhizopus*, *Mucor*). It primarily affects immunocompromised patients, particularly those with uncontrolled diabetes mellitus (ketoacidosis) or neutropenia. **Why Option B is the correct answer (False statement):** The drug of choice for Mucormycosis is **Liposomal Amphotericin B**. **Voriconazole**, while effective against *Aspergillus*, has **no activity** against Mucorales. Using voriconazole in a suspected case of mucormycosis is a common clinical pitfall and a high-yield exam point. Surgical debridement is also mandatory for survival. **Analysis of other options:** * **Option A (Also known as mucormycosis):** This is a true statement. Rhinocerebral is the most common clinical form of the disease. * **Option C (Angioinvasive):** This is a hallmark feature. The fungi invade blood vessel walls, leading to thrombosis, distal ischemia, and tissue infarction. * **Option D (Black necrotic turbinates):** Due to the angioinvasive nature and subsequent tissue necrosis, patients typically present with a characteristic **black eschar** on the nasal turbinates or the hard palate. **Clinical Pearls for NEET-PG:** * **Risk Factor:** Diabetic Ketoacidosis (acidosis allows the fungus to thrive by releasing iron from transferrin). * **Diagnosis:** Definitive diagnosis is made via biopsy showing **broad, ribbon-like, non-septate hyphae** branching at **right angles (90°)**. * **Management:** "Reverse the underlying cause + Aggressive surgical debridement + IV Amphotericin B." * **Second-line agents:** Posaconazole or Isavuconazole can be used as salvage therapy or step-down treatment.

Question 69: A 14-year-old boy presents with a history of frequent nasal bleeding. His Hb was found to be 6.4 g/dL, and peripheral smear showed normocytic hypochromic anemia. What is the most probable diagnosis?

A. Juvenile nasopharyngeal angiofibroma (Correct Answer)
B. Hemangioma
C. Antrochoanal polyp
D. Carcinoma of nasopharynx

Explanation: ### Explanation **Correct Answer: A. Juvenile nasopharyngeal angiofibroma (JNA)** The clinical presentation is classic for **Juvenile Nasopharyngeal Angiofibroma (JNA)**. The key diagnostic clues are: 1. **Demographics:** It occurs almost exclusively in **adolescent males** (14-year-old boy). 2. **Clinical Feature:** Profuse, recurrent, spontaneous epistaxis is the hallmark. 3. **Systemic Impact:** The severity of blood loss is highlighted by the **profound anemia** (Hb 6.4 g/dL). JNA is a benign but locally aggressive, highly vascular tumor arising from the sphenopalatine foramen. **Why other options are incorrect:** * **B. Hemangioma:** While vascular, hemangiomas of the nasal septum (Little’s area) usually cause minor spotting rather than life-threatening anemia requiring hospitalization. * **C. Antrochoanal Polyp:** These present primarily with progressive nasal obstruction and mucoid discharge. Bleeding is extremely rare unless the polyp is secondarily infected or traumatized. * **D. Carcinoma of Nasopharynx:** While it can cause epistaxis, it is rare in early adolescence and typically presents with the "Trotter’s Triad" (conductive deafness, palatal paralysis, and trigeminal neuralgia) along with cervical lymphadenopathy. **High-Yield Pearls for NEET-PG:** * **Origin:** Specifically the superior margin of the **sphenopalatine foramen**. * **Holman-Miller Sign:** Anterior bowing of the posterior wall of the maxillary antrum seen on CT (pathognomonic). * **Diagnosis:** Contrast-enhanced CT (CECT) is the investigation of choice. **Biopsy is contraindicated** due to the risk of torrential hemorrhage. * **Blood Supply:** Primarily the **Internal Maxillary Artery** (branch of the External Carotid). * **Classification:** Fisch or Radkowski classifications are used for staging.

Question 70: Mulberry mucosa is seen in which condition?

A. Irritative rhinitis
B. Chronic atrophic rhinitis
C. Hypertrophic rhinitis (Correct Answer)
D. All of the above

Explanation: **Explanation:** **Hypertrophic Rhinitis (Correct Answer):** Hypertrophic rhinitis is characterized by permanent thickening of the nasal mucosa, particularly involving the turbinates (most commonly the inferior turbinate). This occurs due to chronic inflammation, leading to venous stasis, secondary infection, and fibrosis. The surface of the turbinate becomes irregular, pitted, and nodular, resembling the surface of a mulberry—hence the term **"Mulberry Mucosa."** This classic appearance is most frequently seen at the posterior end of the inferior turbinate. **Why other options are incorrect:** * **Irritative Rhinitis:** This is an early stage of rhinitis (often seen in the prodromal phase of the common cold) characterized by hyperemia and edema of the mucosa, but it does not involve the chronic fibrotic changes required to produce a mulberry appearance. * **Chronic Atrophic Rhinitis:** This condition is the opposite of hypertrophy. It involves atrophy of the nasal mucosa and turbinate bones, leading to a roomy nasal cavity filled with foul-smelling crusts (ozena). The mucosa appears thin and dry, not nodular. **High-Yield Clinical Pearls for NEET-PG:** * **Site:** The posterior end of the **inferior turbinate** is the most common site for mulberry hypertrophy. * **Clinical Feature:** Persistent nasal obstruction that does not respond well to topical decongestants (unlike simple vasomotor rhinitis). * **Management:** Treatment often requires surgical reduction of the turbinate (e.g., partial turbinectomy, submucosal resection, or laser reduction). * **Differential Diagnosis:** Do not confuse "Mulberry mucosa" with "Strawberry gingiva" (Wegener’s Granulomatosis) or "Apple-jelly nodules" (Lupus Vulgaris).

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Olfactory Disorders

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Rhinology — MCQs

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