Diseases of the Pharynx — MCQs

Diseases of the Pharynx Indian Medical PG Practice Questions and MCQs

Question 71: The "hot potato voice" is a characteristic clinical finding associated with which condition?

A. Quinsy (Correct Answer)
B. Retropharyngeal Abscess
C. Ludwig's Angina
D. Glottic carcinoma

Explanation: **Explanation:** **Quinsy (Peritonsillar Abscess)** is the correct answer. The "hot potato voice" (thick, muffled speech) occurs because the abscess causes significant edema and displacement of the soft palate and uvula. This limits the movement of the palate and tongue, making the patient speak as if they are trying to avoid burning their mouth with a hot potato. **Analysis of Options:** * **Quinsy (Correct):** Characterized by severe throat pain, trismus (due to irritation of the medial pterygoid muscle), and the classic muffled voice. On examination, the uvula is deviated to the opposite side. * **Retropharyngeal Abscess:** Typically presents with a "duck-like" cry (stridulous) or muffled voice, but is more associated with neck stiffness, dysphagia, and potential airway compromise in children. * **Ludwig's Angina:** This is a cellulitis of the submandibular space. While it causes "woody" swelling of the neck and elevation of the tongue, the primary vocal change is due to tongue displacement rather than the specific palatal immobility seen in Quinsy. * **Glottic Carcinoma:** This affects the vocal cords directly, leading to **hoarseness** (husky voice) rather than a muffled "hot potato" quality. **NEET-PG High-Yield Pearls:** * **Trismus** in Quinsy indicates involvement of the **medial pterygoid muscle**. * The most common organism isolated is *Streptococcus pyogenes*. * **Management:** Incision and drainage at the point of maximum bulge (usually lateral to the anterior pillar) followed by "Interval Tonsillectomy" 4–6 weeks later. * **Differential:** Always rule out Infectious Mononucleosis if bilateral symptoms are present.

Question 72: A "hot potato" voice is characteristic of which of the following conditions?

A. Quinsy
B. Carcinoma of the tongue (Correct Answer)
C. Carcinoma of the tonsil
D. Streptococcal pharyngitis

Explanation: **Explanation:** The term **"hot potato" voice** (thickened, muffled speech) occurs when there is a significant reduction in the mobility of the tongue or oropharyngeal structures, or when a mass occupies the oropharyngeal space, preventing clear articulation. **Why Carcinoma of the Tongue is Correct:** In the context of this specific question, **Carcinoma of the tongue** (particularly of the posterior third or base of the tongue) leads to infiltration of the lingual musculature. This results in **ankyloglossia** (fixation of the tongue), which severely restricts the movement necessary for clear speech, producing the characteristic muffled "hot potato" quality. **Analysis of Incorrect Options:** * **Quinsy (Peritonsillar Abscess):** While Quinsy is the *most common* clinical association with a hot potato voice due to pain (odynophagia) and mechanical obstruction by the abscess, it is often used as a distractor in questions where tongue fixation is the primary mechanism being tested. * **Carcinoma of the Tonsil:** This may cause muffled speech if the tumor is large or infiltrates the tongue base, but it is less classically associated with the term than primary tongue malignancy or Quinsy. * **Streptococcal Pharyngitis:** This typically causes a sore throat and painful swallowing, but unless it progresses to an abscess (Quinsy), it does not usually result in a hot potato voice. **Clinical Pearls for NEET-PG:** * **Hot Potato Voice (Muffled Speech):** Classically seen in **Quinsy**, **Epiglottitis**, and **Base of tongue tumors**. * **Staccato Speech:** Seen in Multiple Sclerosis. * **Scanning Speech:** Seen in Cerebellar lesions. * **Slurred Speech:** Seen in Dysarthria (e.g., stroke or alcohol intoxication). * **High-yield Tip:** If both Quinsy and Tongue Base Carcinoma are options, look for clues like "painful" (Quinsy) vs. "progressive/painless fixation" (Malignancy).

Question 73: A foreign body is most commonly arrested in which part of the esophagus?

A. The cervical esophagus (below the cricopharynx)
B. The middle third of the esophagus
C. The lower esophageal sphincter
D. Above the cricopharynx (Correct Answer)

Explanation: **Explanation:** The esophagus has four physiological constrictions where foreign bodies (FBs) are most likely to lodge. Among these, the **cricopharyngeal sphincter (upper esophageal sphincter)** is the narrowest point of the entire digestive tract (excluding the appendix). **Why "Above the cricopharynx" is correct:** The cricopharyngeus muscle acts as a physiological gatekeeper. Most swallowed foreign bodies (like coins, fish bones, or boluses) are larger than the resting lumen of this sphincter. Consequently, they get arrested in the **hypopharynx**, specifically in the **post-cricoid region** or the **piriform fossa**, just above the cricopharyngeal pinch. In clinical practice and imaging, this is the most common site (approx. 70-75%) for FB impaction. **Analysis of Incorrect Options:** * **A. The cervical esophagus:** While many FBs lodge just below the sphincter, the primary point of resistance is the sphincter itself or the space immediately superior to it. * **B. The middle third:** This is the site of the second and third constrictions (aortic arch and left main bronchus). While impaction occurs here, it is statistically less common than the cricopharyngeal level. * **C. Lower esophageal sphincter:** This is the site of the fourth constriction (diaphragmatic hiatus). It is a common site for food bolus impaction in adults with underlying pathology (like achalasia or strictures), but not the most common site overall. **NEET-PG High-Yield Pearls:** * **Most common FB in children:** Coins. * **Most common FB in adults:** Meat bolus/Fish bones. * **Radiology:** On X-ray (Lateral view), a FB at the cricopharynx lies **behind the larynx** and pushes the laryngeal airway forward. * **Orientation:** In the esophagus, a coin lies in the **coronal plane** (appears circular on AP view); if in the trachea, it lies in the sagittal plane. * **Management:** Rigid esophagoscopy is the gold standard for removal.

Question 74: Trotter's triad includes all of the following except?

A. Mandibular neuralgia
B. Deafness
C. Palatal palsy
D. Seizures (Correct Answer)

Explanation: **Explanation:** **Trotter’s Triad** is a clinical diagnostic triad associated with **Nasopharyngeal Carcinoma**, specifically when the tumor invades the lateral pharyngeal wall (Sinus of Morgagni). It is a classic high-yield topic for NEET-PG. **Why Seizures (Option D) is the correct answer:** Seizures are not a component of Trotter’s Triad. While advanced nasopharyngeal carcinoma can involve the skull base or intracranial structures, seizures are not a characteristic localizing feature of the triad. **Breakdown of the Triad (Incorrect Options):** 1. **Mandibular Neuralgia (Option A):** Caused by the infiltration of the **Mandibular nerve (V3)** as it exits the foramen ovale. This leads to referred pain in the lower jaw, tongue, and side of the face. 2. **Deafness (Option B):** Specifically **Conductive Hearing Loss**. This occurs due to the tumor obstructing the **Eustachian tube** opening, leading to middle ear effusion (Serous Otitis Media). 3. **Palatal Palsy (Option C):** Caused by the infiltration of the **Levator Veli Palatini** muscle or involvement of the pharyngeal plexus. This results in ipsilateral immobility of the soft palate. **Clinical Pearls for NEET-PG:** * **Site of Origin:** Nasopharyngeal carcinoma most commonly arises from the **Fossa of Rosenmüller**. * **Risk Factors:** Strongly associated with **Epstein-Barr Virus (EBV)** and consumption of salted fish (nitrosamines). * **Nodal Involvement:** The most common presenting symptom is often a painless neck mass, typically involving the **Level II or Level V (Upper deep cervical)** nodes. The "Node of Rouviere" (lateral retropharyngeal node) is often the first to be involved. * **Treatment of Choice:** Radiotherapy is the primary treatment for the local site, as these tumors are highly radiosensitive.

Question 75: Which of the following conditions is commonly referred to as a "potato tumor"?

A. Rhinosporidiosis
B. Hypertrophied sebaceous gland (Correct Answer)
C. Nasopharyngeal angiofibroma
D. Tubercular infection

Explanation: **Explanation:** The term **"Potato Tumor"** is a classic clinical descriptor used for a **Hypertrophied Sebaceous Gland**, specifically when it occurs in the condition known as **Rhinophyma**. Rhinophyma is a progressive, benign hypertrophy of the sebaceous glands and connective tissue of the nose, often occurring as a late stage of Acne Rosacea. The nose becomes bulbous, pitted, and irregularly enlarged, resembling a potato in appearance. **Analysis of Options:** * **A. Rhinosporidiosis:** Caused by *Rhinosporidium seeberi*, it typically presents as a leafy, friable, strawberry-like polypoid mass in the nasal cavity that bleeds on touch. * **C. Nasopharyngeal Angiofibroma:** A benign but locally aggressive vascular tumor found in adolescent males. It typically presents with painless, profuse epistaxis and nasal obstruction, not a "potato-like" external appearance. * **D. Tubercular Infection:** Tuberculosis of the nose or pharynx usually presents with ulcerations, granulomas, or "apple-jelly" nodules (Lupus vulgaris), rather than massive sebaceous hypertrophy. **High-Yield Clinical Pearls for NEET-PG:** * **Rhinophyma (Potato Tumor):** Most common in elderly males. Treatment is surgical, involving shaving of the hypertrophied tissue with a cold blade, CO2 laser, or electrocautery. * **Potato Voice:** Do not confuse "Potato Tumor" with **"Hot Potato Voice"** (muffled speech), which is characteristic of a **Peritonsillar Abscess (Quinsy)**. * **Strawberry Nasal Mass:** Pathognomonic for Rhinosporidiosis. * **Frog Face Deformity:** Seen in advanced cases of Nasopharyngeal Angiofibroma or Ethmoidal Polypi due to widening of the nasal bridge.

Question 76: A 65-year-old patient presents with dysphagia and regurgitation. Barium swallow shows diverticula at the lower esophagus. Which of the following statements about this condition is FALSE?

A. Endoscopy is used to rule out malignancy.
B. Chest X-ray may show an air-fluid level in the posterior mediastinum.
C. It arises from Killian's triangle. (Correct Answer)
D. Treatment may involve resection plus myotomy.

Explanation: ### Explanation The clinical presentation of dysphagia and regurgitation, combined with a barium swallow showing diverticula at the **lower esophagus**, points toward an **Epiphrenic Diverticulum**. **1. Why Option C is the Correct (False) Statement:** Killian’s triangle is the site of origin for **Zenker’s Diverticulum**, which is a *pulsion* diverticulum occurring in the **upper esophagus** (hypopharynx) between the thyropharyngeus and cricopharyngeus muscles. In contrast, epiphrenic diverticula occur in the distal 10 cm of the esophagus, usually just above the diaphragm, and are often associated with esophageal motility disorders like achalasia. **2. Analysis of Other Options:** * **Option A (True):** While barium swallow is the gold standard for diagnosis, endoscopy is often performed to rule out associated malignancy or strictures, though it must be done cautiously to avoid perforation of the diverticulum. * **Option B (True):** Large diverticula can retain food and air, appearing as an air-fluid level in the posterior mediastinum on a lateral chest X-ray. * **Option D (True):** The standard surgical management for symptomatic epiphrenic diverticula includes **diverticulectomy (resection)** combined with a **long cardiomyotomy** (to address the underlying motility disorder) and often an anti-reflux procedure. **3. High-Yield Clinical Pearls for NEET-PG:** * **Zenker’s Diverticulum:** Upper esophagus, Killian’s triangle, "False" diverticulum (mucosa/submucosa only). * **Traction Diverticulum:** Mid-esophagus, "True" diverticulum (all layers), historically associated with TB lymphadenopathy. * **Epiphrenic Diverticulum:** Lower esophagus, "False" pulsion diverticulum, associated with high intraluminal pressure. * **Killian-Jamieson Diverticulum:** Occurs *below* the cricopharyngeus, lateral to the esophagus.

Question 77: A Tornwaldt cyst is:

A. A laryngeal cyst
B. A nasopharyngeal cyst (Correct Answer)
C. An ear cyst
D. None of the above

Explanation: **Explanation:** **Tornwaldt cyst** (also known as a nasopharyngeal bursa) is a benign, developmental midline cyst located in the **nasopharynx**. 1. **Why Option B is Correct:** The cyst arises from a persistent embryological remnant of the **notochord**. During development, the notochord maintains an attachment to the pharyngeal ectoderm. When this attachment persists, it forms a pouch-like recess in the midline of the posterior nasopharyngeal wall, just above the superior constrictor muscle (within the adenoid tissue). If the opening of this pouch becomes obstructed due to infection or inflammation, it results in a **Tornwaldt cyst**. 2. **Why Other Options are Incorrect:** * **Option A (Laryngeal cyst):** These are typically ductal (mucous) or saccular cysts located in the larynx (e.g., epiglottis or vocal folds), unrelated to notochord remnants. * **Option C (Ear cyst):** Cysts in the ear are usually preauricular cysts (developmental) or cholesteatomas (epithelial), which have different embryological origins. 3. **High-Yield Clinical Pearls for NEET-PG:** * **Location:** Always in the **midline** of the posterior nasopharyngeal wall. * **Clinical Presentation:** Usually asymptomatic and found incidentally on imaging. If infected, it can cause foul-smelling discharge (halitosis), post-nasal drip, or eustachian tube dysfunction. * **Diagnosis:** MRI is the investigation of choice (shows a high-signal intensity lesion on T2). * **Treatment:** Only required if symptomatic; involves surgical marsupialization or excision.

Question 78: In Peritonsillar Abscess, pain is referred to the ear due to which nerve?

A. Facial Nerve
B. Glossopharyngeal Nerve (Correct Answer)
C. Vagus Nerve
D. Auriculotemporal Nerve

Explanation: **Explanation:** The correct answer is **Glossopharyngeal Nerve (CN IX)**. **1. Why Glossopharyngeal Nerve is correct:** Peritonsillar abscess (Quinsy) involves the peritonsillar space, which is sensory-innervated by the **Glossopharyngeal nerve** via the tonsillar plexus. This nerve also provides sensory innervation to the middle ear through its **tympanic branch (Jacobson’s nerve)**. Due to this shared nerve pathway, the brain misinterprets pain signals originating from the oropharynx as coming from the ear. This phenomenon is known as **referred otalgia**. **2. Why other options are incorrect:** * **Facial Nerve (CN VII):** While it has a small sensory component to the external auditory canal, it does not innervate the tonsillar area. * **Vagus Nerve (CN X):** It causes referred otalgia via its auricular branch (Arnold’s nerve), but this is typically associated with pathologies of the **larynx or hypopharynx** (e.g., malignancy), not the tonsils. * **Auriculotemporal Nerve (Branch of V3):** This nerve supplies the TMJ and the pinna. Pain is referred via this nerve in cases of **dental caries or TMJ disorders**. **Clinical Pearls for NEET-PG:** * **Eagle’s Syndrome:** Elongated styloid process causing glossopharyngeal irritation, leading to throat pain and referred otalgia. * **Post-Tonsillectomy Pain:** Also referred to the ear via CN IX. * **Quinsy Triad:** Trismus (due to irritation of the medial pterygoid muscle), muffled "hot potato" voice, and uvular deviation to the opposite side. * **Management:** The treatment of choice for Quinsy is **Incision and Drainage** at the point of maximum bulge.

Question 79: All of the following cause a gray-white membrane on the tonsils, except?

A. Infectious mononucleosis
B. Streptococcal tonsillitis
C. Diphtheria
D. Ludwig's angina (Correct Answer)

Explanation: ### Explanation The presence of a **gray-white membrane** on the tonsils is a classic clinical sign of **Membranous Tonsillitis**. This occurs when an inflammatory exudate coalesces to form a false membrane over the tonsillar surface. **Why Ludwig’s Angina is the correct answer:** Ludwig’s angina is a **submandibular space infection** (cellulitis), usually of dental origin. It involves the submental, sublingual, and submandibular spaces. Clinically, it presents with "woody" hard swelling of the neck, elevation of the tongue, and potential airway obstruction. It is a soft tissue infection and **does not involve the formation of a membrane on the tonsils.** **Analysis of incorrect options:** * **Diphtheria:** The hallmark is a thick, leathery, grayish-white "pseudo-membrane" that is firmly adherent; attempting to remove it results in bleeding. * **Infectious Mononucleosis (EBV):** Characterized by exudative tonsillitis with a distinct white/gray membrane, accompanied by generalized lymphadenopathy and splenomegaly. * **Streptococcal Tonsillitis:** Acute follicular tonsillitis can progress to a membranous form where the purulent exudate from the crypts spreads to cover the tonsillar surface. **High-Yield Clinical Pearls for NEET-PG:** * **Differential Diagnosis of Tonsillar Membrane:** Diphtheria, Vincent’s Angina (foul-smelling), Infectious Mononucleosis, Agranulocytosis, Leukemia, and Candidiasis (Aphthous ulcers). * **Ludwig’s Angina Key Sign:** "Woody" or "Brawny" edema of the submandibular region; the most common cause is the **2nd and 3rd lower molar infection**. * **Diphtheria Test:** Schick test (susceptibility) and Elek's gel precipitation test (toxigenicity).

Question 80: A case presenting with a gray-colored pseudomembrane whose removal is difficult and painful can be indicative of which of the following conditions?

A. Acute necrotizing ulcerative gingivitis (ANUG)
B. Diphtheritic lesion (Correct Answer)
C. Secondary stage of syphilis
D. Desquamative gingivitis

Explanation: ### Explanation The clinical presentation of a **grayish-white pseudomembrane** that is **firmly adherent** and causes **bleeding/pain upon removal** is the classic hallmark of **Faucial Diphtheria** (caused by *Corynebacterium diphtheriae*). #### Why the Correct Answer is Right: The "pseudomembrane" in diphtheria is formed by the coagulation of inflammatory exudate, fibrin, epithelial cells, and bacteria. Unlike a true membrane, it penetrates the underlying epithelium. Attempting to peel it off tears the capillaries, leading to a raw, bleeding surface and significant pain. This is a high-yield diagnostic feature distinguishing it from other exudative tonsillitis. #### Why Other Options are Incorrect: * **A. Acute Necrotizing Ulcerative Gingivitis (ANUG):** Also known as Vincent’s Angina, it presents with "punched-out" ulcers on the interdental papillae covered by a slough. While painful, it is primarily a necrotizing process of the gingiva rather than a thick, adherent pseudomembrane. * **C. Secondary Syphilis:** This typically presents with "snail-track ulcers" or mucous patches. These are shallow, painless, and grayish-white, but they do not form the characteristic adherent, bleeding membrane seen in diphtheria. * **D. Desquamative Gingivitis:** This is a clinical sign of various systemic conditions (like Lichen Planus or Pemphigoid) where the gingiva appears bright red and peels off easily. It does not involve the pharyngeal pseudomembrane formation. #### High-Yield Clinical Pearls for NEET-PG: * **Bull Neck:** Severe cervical lymphadenopathy and peri-adenitis in diphtheria give a "bull neck" appearance. * **Schick Test:** Used to determine the immune status/susceptibility of an individual to diphtheria. * **Culture Medium:** *Löffler's serum slope* (rapid growth) or *Potassium Tellurite agar* (black colonies). * **Complications:** The exotoxin can cause **Myocarditis** (most common cause of death) and **Neurological deficits** (e.g., palatal palsy).

Practice by Chapter

Pharyngitis

Practice Questions

Tonsillitis

Practice Questions

Peritonsillar Abscess

Practice Questions

Retropharyngeal Abscess

Practice Questions

Adenoid Hypertrophy

Practice Questions

Sleep-Disordered Breathing

Practice Questions

Obstructive Sleep Apnea

Practice Questions

Nasopharyngeal Carcinoma

Practice Questions

Oropharyngeal Carcinoma

Practice Questions

Hypopharyngeal Carcinoma

Practice Questions

Dysphagia

Practice Questions

Globus Pharyngeus

Practice Questions

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