Diseases of the Pharynx Practice Questions

Q: Which nerve is most commonly affected in stylalgia?

Glossopharyngeal nerve. **Explanation:** **Stylalgia**, also known as **Eagle’s Syndrome**, refers to facial or pharyngeal pain caused by an elongated styloid process (greater than 30 mm) or calcification of the stylohyoid ligament. **Why Glossopharyngeal Nerve is Correct:** The styloid process is located in close anatomical proximity to several neurovascular structures. The **glossopharyngeal nerve (CN IX)** arches around the lateral aspect of the styloid process as it descends to the base of the tongue. When the process is elongated or deviated medially, it mechanically irritates or compresses the glossopharyngeal nerve. This results in the classic presentation: dull, nagging throat pain, a sensation of a foreign body (globus), and referred otalgia (pain in the ear) triggered by swallowing or turning the head. **Why Other Options are Incorrect:** * **Abducent nerve (CN VI):** This nerve controls the lateral rectus muscle of the eye. It is located intracranially and in the orbit, far from the styloid process. * **Auditory nerve (CN VIII):** This nerve is responsible for hearing and balance and is contained within the internal auditory canal and inner ear. * **Greater Petrosal nerve:** A branch of the facial nerve (CN VII) involved in parasympathetic lacrimation; it is located deep within the temporal bone and does not interact with the styloid process. **Clinical Pearls for NEET-PG:** * **Diagnosis:** Confirmed by palpating the styloid process in the tonsillar fossa (which reproduces the pain) and imaging (X-ray or 3D CT). * **Treatment:** Medical management includes NSAIDs or carbamazepine; definitive treatment is **styloidectomy** (trans-oral or external approach). * **Referred Otalgia:** In stylalgia, ear pain is mediated by the **Jacobson’s nerve**, a branch of the glossopharyngeal nerve.

Q: What is the term for swelling located in the tonsillar area, specifically between the tonsil and the superior constrictor muscle?

Quinsy. **Explanation:** The correct answer is **Quinsy**, also known as a **Peritonsillar Abscess**. **1. Why Quinsy is correct:** Quinsy is a collection of pus in the **peritonsillar space**, which is a potential space located between the **capsule of the palatine tonsil** (medially) and the **superior constrictor muscle** (laterally). It usually occurs as a complication of acute tonsillitis. The loose areolar tissue in this space allows for the accumulation of pus, typically starting at the upper pole. **2. Why other options are incorrect:** * **Dental abscess:** This originates from an infected tooth (often the lower molars) and involves the submandibular or sublingual spaces (e.g., Ludwig’s Angina), not the tonsillar fossa. * **Parapharyngeal abscess:** This involves the space lateral to the superior constrictor muscle. While a Quinsy can spread here, a primary parapharyngeal abscess presents with swelling behind the posterior pillar and external swelling at the angle of the jaw. * **Retropharyngeal abscess:** This occurs in the space between the posterior pharyngeal wall and the prevertebral fascia. It presents as a midline or paramedian bulge on the posterior pharyngeal wall, not the tonsillar area. **Clinical Pearls for NEET-PG:** * **Clinical Features:** Severe odynophagia, "Hot potato voice," trismus (due to irritation of the medial pterygoid muscle), and **deviation of the uvula** to the opposite side. * **Management:** Incision and drainage at the point of maximum bulge (usually above the supratonsillar fossa). * **Interval Tonsillectomy:** Performed 4–6 weeks after the abscess resolves to prevent recurrence.

Q: Horner's syndrome is caused by:

Nasopharyngeal carcinoma with metastasis. **Explanation:** **1. Why Option B is Correct:** Horner’s syndrome results from a disruption of the **sympathetic nerve supply** to the eye. In the context of ENT oncology, **Nasopharyngeal Carcinoma (NPC)** can cause this syndrome through two primary mechanisms: * **Direct Extension:** The tumor can invade the parapharyngeal space, involving the cervical sympathetic chain. * **Metastasis:** NPC frequently metastasizes to the **retropharyngeal lymph nodes (Nodes of Rouviere)** or the deep cervical nodes. Enlargement of these nodes can compress the sympathetic chain at the level of the carotid sheath, leading to the classic triad of miosis, partial ptosis, and anhidrosis. **2. Why Other Options are Incorrect:** * **Facial Injury (A):** While trauma can cause Horner’s syndrome, it must specifically involve the neck or thoracic outlet (brachial plexus). A general facial injury typically affects the facial nerve (CN VII), leading to facial palsy, not sympathetic chain disruption. * **Meniere’s Disease (C):** This is an inner ear disorder characterized by endolymphatic hydrops. It presents with vertigo, tinnitus, and sensorineural hearing loss; it has no anatomical or physiological link to the sympathetic nervous system. **3. High-Yield Clinical Pearls for NEET-PG:** * **Trotter’s Triad (NPC):** 1. Conductive deafness (Eustachian tube blockage), 2. Ipsilateral facial pain/numbness (CN V involvement), 3. Palatal paralysis (CN X involvement). * **Pancoast Tumor:** Another high-yield cause of Horner’s syndrome (apical lung carcinoma involving the stellate ganglion). * **Clinical Triad of Horner’s:** Miosis (constricted pupil), Partial Ptosis (Muller’s muscle paralysis), and Anhidrosis (loss of sweating). Enophthalmos is often an apparent, rather than true, finding.

Q: A 14-year-old patient presents with cheek swelling and mild proptosis. What is the most likely diagnosis?

Nasopharyngeal angiofibroma. ***Nasopharyngeal angiofibroma*** - **Juvenile nasopharyngeal angiofibroma (JNA)** classically affects **adolescent males** and commonly presents with **cheek swelling** due to extension into the **infratemporal fossa**. - The **mild proptosis** indicates **orbital extension** through the **pterygopalatine fossa**, which is characteristic of advanced JNA cases. *Carcinoma* - **Nasopharyngeal carcinoma** is extremely rare in **adolescents** and typically occurs in adults over 40 years. - Usually presents with **unilateral hearing loss**, **cranial nerve palsies**, and **cervical lymphadenopathy** rather than cheek swelling. *Nasal polyp* - **Nasal polyps** are **inflammatory masses** that remain confined to the **nasal cavity** and **paranasal sinuses**. - They do not cause **cheek swelling** or **proptosis** as they lack the invasive growth pattern seen in JNA. *Foreign body* - **Nasal foreign bodies** typically cause **unilateral nasal obstruction** and **purulent discharge** but remain localized to the nasal cavity. - They do not extend beyond the nasal cavity to cause **cheek swelling** or **orbital involvement** with proptosis.

Q: Diverticulum through Killian's dehiscence is called:

Pharyngeal pouch. **Explanation:** **1. Why the Correct Answer is Right:** A **Pharyngeal pouch** (also known as **Zenker’s Diverticulum**) is a pulsion diverticulum caused by the herniation of the pharyngeal mucosa through a weak area in the posterior wall of the lower pharynx [1]. This weak spot is known as **Killian’s dehiscence**, which is located between the two parts of the inferior constrictor muscle: the upper oblique fibers (**thyropharyngeus**) and the lower horizontal fibers (**cricopharyngeus**) [1]. It typically occurs due to neuromuscular incoordination where the cricopharyngeus fails to relax during swallowing, leading to increased intraluminal pressure. **2. Why the Incorrect Options are Wrong:** * **Palatine pouch:** This is not a recognized clinical entity in this context. The palatine tonsils are located in the oropharynx between the tonsillar pillars, but they do not form diverticula through muscular dehiscence. * **Esophageal pouch:** While Zenker’s is often mislabeled as an esophageal diverticulum, it is technically a **false diverticulum** of the pharynx because it originates above the upper esophageal sphincter. True esophageal pouches (like traction diverticula) occur lower in the mid-esophagus. **3. NEET-PG High-Yield Clinical Pearls:** * **Type:** It is a **pulsion diverticulum** and a **false diverticulum** (contains only mucosa and submucosa). * **Clinical Presentation:** Characterized by dysphagia, **halitosis** (due to fermenting food), and **regurgitation** of undigested food [2]. * **Boyce’s Sign:** A gurgling sound heard on pressing the swelling in the neck [2]. * **Investigation of Choice:** **Barium Swallow** (shows a retort-shaped sac) [2]. * **Treatment:** Small pouches may be treated with endoscopic Dohlman’s procedure (stapling); larger ones require external diverticulectomy with cricopharyngeal myotomy [2].

Q: What is the classification of keratinizing squamous cell carcinoma of the nasopharynx?

Type I. The World Health Organization (WHO) classifies Nasopharyngeal Carcinoma (NPC) into three distinct histological types based on the degree of differentiation and keratinization. **Explanation of the Correct Answer:** * **Type I (Keratinizing Squamous Cell Carcinoma):** This type shows definite evidence of keratinization with the presence of intercellular bridges and/or keratin pearls. It is the least common type globally but has the strongest association with **smoking and alcohol** rather than the Epstein-Barr Virus (EBV). It carries the **worst prognosis** because it is less radiosensitive compared to the other types. **Explanation of Incorrect Options:** * **Type II (Non-keratinizing Differentiated Carcinoma):** These cells show maturation and clear cell margins but lack overt keratinization. It has a moderate association with EBV. * **Type III (Non-keratinizing Undifferentiated Carcinoma):** Also known as **Lymphoepithelioma** (Schmincke's tumor). It is the most common type, has the strongest association with **EBV titers**, and despite being aggressive, it has the **best prognosis** due to its high sensitivity to radiotherapy. * **Type IV:** There is no "Type IV" in the standard WHO classification for nasopharyngeal carcinoma. **High-Yield Clinical Pearls for NEET-PG:** * **Most Common Site:** Fossa of Rosenmüller. * **Triad of Trotter:** Conductive hearing loss (Eustachian tube blockage), Palatal paralysis (CN X palsy), and Temporofacial neuralgia (CN V palsy). * **EBV Association:** Types II and III are strongly linked to EBV; Type I is not. * **Treatment of Choice:** Radiotherapy is the primary treatment for all stages of NPC (specifically IMRT). Chemotherapy is added for advanced stages.

Q: A patient suffering from Eagle's syndrome complains of what symptom?

Dysphagia. **Explanation:** **Eagle’s Syndrome** (also known as Stylohyoid Syndrome) occurs due to an **elongated styloid process** (greater than 30 mm) or calcification of the **stylohyoid ligament**. This anatomical abnormality causes compression or irritation of nearby structures, primarily the glossopharyngeal nerve (CN IX) and the carotid arteries. **Why Dysphagia is the correct answer:** The elongated styloid process projects into the tonsillar fossa. During swallowing, the movement of the pharyngeal musculature causes the process to irritate the sensory fibers of the glossopharyngeal nerve and the pharyngeal constrictors. This results in **dysphagia** (difficulty swallowing), odynophagia (painful swallowing), and a persistent "foreign body" sensation in the throat (globus pharyngeus). **Analysis of Incorrect Options:** * **A & C (Burning sensation/Glossodynia):** While Eagle’s syndrome involves the glossopharyngeal nerve, it typically presents as sharp, lancinating pain triggered by swallowing or head rotation, rather than a generalized burning sensation or isolated tongue pain (glossodynia). * **B (Excessive salivation):** This is not a characteristic feature. Eagle’s syndrome is defined by mechanical irritation and neuropathic pain, not autonomic dysfunction of the salivary glands. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Presentation:** A patient post-tonsillectomy (scar tissue formation around the styloid) presenting with unilateral throat pain radiating to the ear (referred otalgia). * **Diagnosis:** Palpation of the styloid process in the tonsillar fossa (reproduces pain) and confirmed by **3D-CT scan** (Gold Standard). * **Carotid Artery Syndrome:** A variant where the styloid compresses the carotid artery, leading to syncope or visual disturbances upon turning the head. * **Treatment:** Surgical shortening of the styloid process via a transoral or cervical approach (Styloidectomy).

Q: Which of the following statements about nasopharyngeal carcinoma is false?

Generally has a good prognosis. **Explanation:** Nasopharyngeal Carcinoma (NPC) is a unique head and neck cancer with distinct epidemiological and clinical characteristics. **Why Option C is False (The Correct Answer):** Nasopharyngeal carcinoma generally has a **poor prognosis**. This is due to several factors: the anatomical location makes surgical access difficult, the tumor is often clinically silent in early stages, and it has a high propensity for early lymphatic spread. Most patients present at an advanced stage (Stage III or IV), leading to lower overall survival rates compared to other head and neck cancers. **Analysis of Other Options:** * **Option A (Rhinolalia Clausa):** NPC originates in the nasopharynx (most commonly the Fossa of Rosenmüller). Large growths cause posterior nasal obstruction, leading to "hyponasality" or **rhinolalia clausa** (denasal speech). * **Option B (Radiotherapy):** Because NPC is highly radiosensitive and surgically inaccessible, **Radiotherapy is the primary treatment modality** for all stages. Chemotherapy is added for advanced stages (Concurrent Chemoradiotherapy). * **Option D (Horner’s Syndrome):** NPC is notorious for skull base invasion. Involvement of the **parapharyngeal space** can damage the cervical sympathetic chain, resulting in ipsilateral Horner’s syndrome (ptosis, miosis, anhidrosis). **High-Yield Clinical Pearls for NEET-PG:** * **Etiology:** Strongly associated with **Epstein-Barr Virus (EBV)** and dietary nitrosamines (salted fish). * **Trotter’s Triad:** 1. Conductive hearing loss (Eustachian tube blockage), 2. Ipsilateral facial pain (Trigeminal nerve involvement), 3. Palatal palsy. * **Most Common Presentation:** Level II/Upper jugular **painless cervical lymphadenopathy**. * **WHO Classification:** Type 1 (Keratinizing), Type 2 (Non-keratinizing), Type 3 (Undifferentiated/Lymphoepithelioma). Type 3 is the most common and most radiosensitive.

Question 1

Which nerve is most commonly affected in stylalgia?

Accepted Answer

Glossopharyngeal nerve

Answer

Abducent nerve

Answer

Auditory nerve

Answer

Greater Petrosal nerve

Question 2

What is the term for swelling located in the tonsillar area, specifically between the tonsil and the superior constrictor muscle?

Accepted Answer

Quinsy

Answer

Dental abscess

Answer

Parapharyngeal abscess

Answer

Retropharyngeal abscess

Question 3

Horner's syndrome is caused by:

Accepted Answer

Nasopharyngeal carcinoma with metastasis

Answer

Facial injury

Answer

Meniere's disease

Answer

All of the above

Question 4

A 14-year-old patient presents with cheek swelling and mild proptosis. What is the most likely diagnosis?

Accepted Answer

Nasopharyngeal angiofibroma

Answer

Carcinoma

Answer

Nasal polyp

Answer

Foreign body

Question 5

Diverticulum through Killian's dehiscence is called:

Accepted Answer

Pharyngeal pouch

Answer

Palatine pouch

Answer

Esophageal pouch

Answer

None of the above

Question 6

What is the classification of keratinizing squamous cell carcinoma of the nasopharynx?

Accepted Answer

Type I

Answer

Type II

Answer

Type III

Answer

Type IV

Question 7

Which of the following statements about the palatine tonsil is incorrect?

Accepted Answer

Inflammation can lead to referred ear pain via the glossopharyngeal nerve.

Answer

Develops from the second pharyngeal pouch.

Answer

Its main blood supply is a branch of the facial artery.

Answer

It is covered by a fibrous capsule.

Question 8

A patient suffering from Eagle's syndrome complains of what symptom?

Accepted Answer

Dysphagia

Answer

Burning sensations in the mouth

Answer

Excessive salivation

Answer

Glossodynia

Question 9

Which of the following statements regarding foreign bodies in the oropharynx is FALSE?

Accepted Answer

Food particles are the most common oropharyngeal foreign bodies in children.

Answer

Impacted foreign bodies most often lodge in the soft tissue at the base of tongue.

Answer

Clinical hypopharyngeal foreign bodies are amenable to clinical examination.

Answer

Endoscopy and MDCT are used in the diagnosis.

Question 10

Which of the following statements about nasopharyngeal carcinoma is false?

Accepted Answer

Generally has a good prognosis

Answer

Associated with rhinolalia clausa

Answer

Radiotherapy is the main modality of treatment

Answer

Can present with Horner's syndrome

Diseases of the Pharynx — MCQs

Diseases of the Pharynx — MCQs

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