Diseases of the Pharynx Practice Questions

Q: What is the most common presentation of nasopharyngeal carcinoma?

Cervical lymphadenopathy. **Explanation:** Nasopharyngeal Carcinoma (NPC) is a unique malignancy often associated with the Epstein-Barr Virus (EBV). The most common presenting symptom, seen in approximately **60-80% of cases**, is **painless cervical lymphadenopathy**. **Why Cervical Lymphadenopathy is the Correct Answer:** The nasopharynx has an extremely rich lymphatic network. Tumors in this region frequently remain clinically silent while metastasizing early to the cervical nodes. The most common site for involvement is the **upper deep cervical nodes** (specifically the **Node of Rouviere** or the Jugulodigastric nodes). Often, a lump in the neck is the first and only sign that brings the patient to the clinic. **Analysis of Incorrect Options:** * **A. Epistaxis:** While blood-stained nasal discharge or post-nasal drip can occur, frank epistaxis is less common than nodal involvement. * **C. Nasal Obstruction:** This occurs as the tumor grows to fill the nasopharyngeal space, but it is typically a later feature compared to lymphatic spread. * **D. Hearing Loss:** NPC can block the Eustachian tube orifice, leading to **Unilateral Serous Otitis Media**. While this is a classic diagnostic sign (Trotter’s Triad), it is not the *most common* initial presentation. **High-Yield Clinical Pearls for NEET-PG:** * **Trotter’s Triad:** 1. Conductive hearing loss (Eustachian tube blockage), 2. Ipsilateral soft palate paralysis (CN X involvement), 3. Trigeminal neuralgia (CN V involvement). * **Fossa of Rosenmüller:** The most common site of origin for NPC. * **Treatment of Choice:** Radiotherapy is the primary treatment (NPC is highly radiosensitive). * **Diagnostic Marker:** Elevated titers of **IgA antibodies against EBV VCA** (Viral Capsid Antigen).

Q: Web constriction is seen in which part of the esophagus in Plummer-Vinson syndrome?

Cervical. **Explanation:** **Plummer-Vinson Syndrome (PVS)**, also known as Paterson-Brown-Kelly syndrome, is characterized by the classic triad of **iron-deficiency anemia, dysphagia, and esophageal webs.** **Why Cervical is correct:** The esophageal web in PVS is a thin, mucosal fold that typically occurs in the **post-cricoid region**, which is located in the **cervical esophagus**. These webs are eccentric, semi-lunar, and composed of squamous epithelium. They occur at the junction of the hypopharynx and the esophagus, making the cervical region the definitive site of constriction. **Why other options are incorrect:** * **Thoracic Esophagus:** While webs can rarely occur here (e.g., in cases of Gastroesophageal Reflux), they are not characteristic of PVS. The thoracic part is more commonly associated with Schatzki rings (at the squamocolumnar junction). * **Abdominal Esophagus:** This is the shortest segment, located below the diaphragm. Constrictions here are usually due to hiatal hernias or peptic strictures, not PVS webs. **High-Yield Clinical Pearls for NEET-PG:** * **Demographics:** Most common in middle-aged females. * **Clinical Features:** Glossitis (smooth tongue), koilonychia (spoon-shaped nails), and angular stomatitis. * **Malignant Potential:** PVS is considered a **precancerous condition**. It significantly increases the risk of **Squamous Cell Carcinoma** of the post-cricoid region and upper esophagus. * **Diagnosis:** Best visualized via **Barium Swallow** (lateral view) showing a "shelf-like" projection. * **Treatment:** Iron supplementation often resolves the dysphagia; however, severe webs may require endoscopic dilation.

Q: Which of the following is NOT a differential diagnosis for a grey-white membrane on the tonsil?

Ludwig's Angina. **Explanation:** The presence of a **grey-white membrane** on the tonsil is a classic clinical sign that necessitates differentiating between infectious, inflammatory, and neoplastic conditions. **Why Ludwig’s Angina is the correct answer:** Ludwig’s Angina is a **submandibular space infection** (cellulitis), typically odontogenic in origin. It involves the submental, sublingual, and submandibular spaces bilaterally. Clinically, it presents with "woody" hard swelling of the neck, brawny edema, and elevation of the floor of the mouth/tongue. It does **not** involve the tonsillar mucosa or produce a membrane; therefore, it is not a differential diagnosis for a tonsillar membrane. **Analysis of Incorrect Options:** * **Candidiasis (Moniliasis):** Presents as creamy white, curd-like patches on the tonsils and oral mucosa. When scraped, it may leave an erythematous, bleeding base. * **Vincent’s Angina:** An infection caused by *Borrelia vincentii* and *Fusobacterium*. It typically presents as a unilateral ulcer covered by a dirty greyish-white slough/membrane. * **Malignancy of the Tonsil:** Squamous cell carcinoma or lymphoma can present as an ulcerative lesion with a necrotic slough or "membrane" covering the growth, often associated with fetid breath and cervical lymphadenopathy. **High-Yield Clinical Pearls for NEET-PG:** * **Diphtheria:** The most classic cause of a "true" greyish-white membrane that is tough, adherent, and bleeds on removal. * **Infectious Mononucleosis (EBV):** Presents with a thick exudative membrane, generalized lymphadenopathy, and a positive Paul-Bunnell test. * **Agranulocytosis:** Can cause necrotic tonsillar ulcers with a greyish membrane due to lack of neutrophils. * **Aphthous Ulcers:** Can occur on the tonsil, appearing as a pale yellow membrane with a red halo.

Q: A 45-year-old patient complains of pain in the throat, which is aggravated on swallowing and radiates to the ear and the posterior part of the tongue. What is the likely diagnosis?

Glossopharyngeal neuralgia. ### Explanation **Glossopharyngeal Neuralgia (GPN)** is the correct diagnosis based on the classic distribution of pain. The glossopharyngeal nerve (CN IX) provides sensory innervation to the posterior third of the tongue, the tonsillar fossa, and the oropharynx. It also gives off the **Jacobson’s nerve** (tympanic branch), which supplies the middle ear. The hallmark of GPN is paroxysmal, lancinating pain triggered by actions like **swallowing, talking, or coughing**. The pain typically radiates from the throat/tonsillar pillar to the **ear** (referred otalgia via Jacobson’s nerve) and the **base of the tongue**. #### Why the other options are incorrect: * **Sluder’s Neuralgia (Sphenopalatine Ganglion Neuralgia):** Characterized by pain centered around the orbit, nose, and maxilla, often associated with nasal congestion or rhinorrhea. It does not typically involve the tongue or throat triggered by swallowing. * **Disorder of the TMJ (Costen’s Syndrome):** Pain is localized to the preauricular region and jaw, usually aggravated by chewing or opening the mouth wide, rather than swallowing. * **Trigeminal Neuralgia:** The most common facial neuralgia, involving the V2 or V3 branches. Pain is felt in the cheek, jaw, or teeth. While V3 can cause tongue pain, it does not involve the deep oropharynx or trigger upon swallowing. #### NEET-PG High-Yield Pearls: * **Eagle’s Syndrome:** A key differential diagnosis where an elongated styloid process irritates the glossopharyngeal nerve, causing similar symptoms. * **Treatment:** Medical management starts with **Carbamazepine** (first-line). Surgical options include Microvascular Decompression (MVD) or rhizotomy. * **Vagal involvement:** In rare cases, GPN can be associated with syncope or bradycardia due to the proximity of the glossopharyngeal nerve to the vagus nerve.

Q: Which of the following structures does not form Waldeyer's ring?

Jugulodigastric node. ### Explanation **Waldeyer’s Ring** is a circular arrangement of lymphoid tissue located in the pharynx at the entrance of the aerodigestive tract. It serves as the first line of defense against inhaled or ingested pathogens. **Why Option C is correct:** The **Jugulodigastric node** (also known as the "tonsillar node") is a deep cervical lymph node. While it is the primary site for lymphatic drainage from the palatine tonsils, it is an **extrapharyngeal** structure. Waldeyer’s ring consists exclusively of **subepithelial lymphoid tissue** located within the pharyngeal wall, not the lymph nodes themselves. **Why the other options are incorrect:** Waldeyer’s ring is composed of the following four main components: * **Adenoids (Nasopharyngeal tonsil):** Located in the roof and posterior wall of the nasopharynx (Option B). * **Palatine tonsils:** Located in the oropharynx between the palatoglossal and palatopharyngeal arches (Option A). * **Lingual tonsils:** Located on the posterior one-third of the tongue. * **Tubal tonsils:** Located in the Fossa of Rosenmüller, near the opening of the Eustachian tube. * **Lateral pharyngeal bands** and discrete lymphoid follicles on the posterior pharyngeal wall also contribute to the ring (Option D). **High-Yield Clinical Pearls for NEET-PG:** 1. **Passavant’s Ridge:** Formed by the contraction of the palatopharyngeus muscle; it is not part of the ring but is a key landmark in the oropharynx. 2. **Lymphatic Drainage:** Unlike lymph nodes, the components of Waldeyer’s ring **do not possess afferent lymphatics**; they only have efferent drainage. 3. **Infection:** Chronic inflammation of the lateral pharyngeal bands is often seen in patients post-tonsillectomy (compensatory hypertrophy).

Q: All of the following are contraindications for rigid esophagoscopy EXCEPT?

Stricture. **Explanation:** Rigid esophagoscopy is a surgical procedure used for both diagnostic and therapeutic purposes (e.g., foreign body removal). Understanding its contraindications is crucial for preventing life-threatening complications like esophageal perforation. **Why "Stricture" is the Correct Answer:** A **stricture** is an **indication**, not a contraindication, for rigid esophagoscopy. Rigid esophagoscopy is frequently performed to evaluate the nature of a stricture, obtain biopsies to rule out malignancy, and perform therapeutic interventions such as dilatation (using Jackson’s or gum-elastic bougies). While caution is required to avoid perforation, the presence of a stricture is a primary reason to perform the procedure. **Analysis of Incorrect Options:** * **Trismus (Option A):** This is a **relative contraindication**. Rigid esophagoscopy requires wide mouth opening to introduce the rigid metal tube. If the patient cannot open their mouth (due to peritonsillar abscess, tetanus, or TMJ issues), the scope cannot be safely inserted. * **Aortic Aneurysm (Option B):** This is a **major contraindication**. The esophagus lies in close anatomical proximity to the aorta. The pressure exerted by a rigid metal scope, combined with the lack of flexibility, poses a high risk of rupturing the aneurysm, which is fatal. **Clinical Pearls for NEET-PG:** * **Absolute Contraindications:** Aortic aneurysm, severe cervical spine deformities (e.g., Pott’s disease, advanced cervical spondylosis) which prevent the "sniffing position" required for insertion. * **Relative Contraindications:** Recent myocardial infarction, severe respiratory distress, and trismus. * **Positioning:** Rigid esophagoscopy is performed in the **"Barking Dog" or "Sniffing" position** (extension at the atlanto-occipital joint and flexion at the lower cervical spine). * **Most Common Site of Perforation:** The **Cricopharyngeus** (the narrowest part of the esophagus).

Q: Which spaces are involved in Ludwig's angina?

All of the above. **Explanation:** Ludwig’s angina is a rapidly spreading, potentially life-threatening **cellulitis** (not an abscess) of the floor of the mouth. The core anatomical concept to remember for NEET-PG is that it involves **bilateral** involvement of three specific subfascial spaces. 1. **Submaxillary Space:** This is the primary site of infection, often originating from the 2nd or 3rd mandibular molars (80% of cases are odontogenic). 2. **Sublingual Space:** The infection spreads superior to the mylohyoid muscle into this space. 3. **Submental Space:** The infection also involves the midline space below the chin. **Why "All of the above" is correct:** In clinical anatomy, the term **Submandibular Space** is an umbrella term that encompasses both the **Submaxillary** and **Submental** spaces. Therefore, Ludwig's angina involves the sublingual, submaxillary, and submental (collectively submandibular) spaces simultaneously. **Why other options are insufficient:** While options A, B, and C are individually involved, selecting only one would be incomplete. The hallmark of Ludwig’s angina is the **multispace** involvement. **High-Yield Clinical Pearls for NEET-PG:** * **Source:** Most common cause is dental infection (mandibular molars). * **Clinical Features:** "Woody" hard swelling of the neck, elevation and protrusion of the tongue (causing potential airway obstruction), and absence of fluctuance (as it is cellulitis). * **Microbiology:** Usually a mixed infection (Streptococcus, Staphylococcus, and anaerobes). * **Management:** The priority is **Airway Maintenance** (tracheostomy if needed), followed by IV antibiotics and surgical decompression (incision and drainage) if medical management fails.

Q: Moure's sign can be detected in which of the following conditions?

Postcricoid carcinoma. **Explanation:** **Moure’s Sign** (also known as the loss of laryngeal crepitus) is a classic clinical sign used to identify malignancies of the postcricoid region. **Why Postcricoid Carcinoma is Correct:** Normally, when the larynx is moved side-to-side against the vertebral column, a palpable "grating" sensation or click is produced; this is known as **laryngeal crepitus**. In **Postcricoid Carcinoma**, the tumor mass infiltrates the space between the cricoid cartilage and the cervical vertebrae. This soft tissue mass acts as a "cushion," preventing the cartilage from rubbing against the bone, thereby leading to the **loss of laryngeal crepitus (Positive Moure’s Sign)**. **Why Other Options are Incorrect:** * **Nasopharyngeal Carcinoma:** This occurs in the upper pharynx, far above the larynx, and does not interfere with laryngeal mobility against the vertebrae. * **Oropharyngeal Carcinoma:** While closer to the larynx, these tumors typically involve the base of tongue or tonsils and do not occupy the postcricoid space required to abolish crepitus. * **Supraglottic Carcinoma:** These tumors involve the structures above the vocal cords (e.g., epiglottis). Unless there is massive posterior extension into the hypopharynx, laryngeal crepitus remains preserved. **Clinical Pearls for NEET-PG:** * **Postcricoid Carcinoma** is highly associated with **Plummer-Vinson (Paterson-Brown-Kelly) Syndrome**, characterized by iron deficiency anemia, glossitis, and esophageal webs. * It is more common in **females**, unlike most other head and neck cancers. * **Trotter’s Triad** (for Nasopharyngeal Ca): Conductive deafness, palatal paralysis, and trigeminal neuralgia. * **Direct Laryngoscopy** is the gold standard for evaluating the extent of postcricoid lesions.

Question 1

What is the most common presentation of nasopharyngeal carcinoma?

Accepted Answer

Cervical lymphadenopathy

Answer

Epistaxis

Answer

Nasal obstruction

Answer

Hearing loss

Question 2

Web constriction is seen in which part of the esophagus in Plummer-Vinson syndrome?

Accepted Answer

Cervical

Answer

Thoracic

Answer

Abdominal

Answer

Any of the above

Question 3

Which of the following is NOT a differential diagnosis for a grey-white membrane on the tonsil?

Accepted Answer

Ludwig's Angina

Answer

Candidiasis

Answer

Vincent's Angina

Answer

Malignancy of the tonsil

Question 4

A 45-year-old patient complains of pain in the throat, which is aggravated on swallowing and radiates to the ear and the posterior part of the tongue. What is the likely diagnosis?

Accepted Answer

Glossopharyngeal neuralgia

Answer

Sluder's neuralgia

Answer

Disorder of the temporomandibular joint

Answer

Trigeminal neuralgia

Question 5

Which of the following structures does not form Waldeyer's ring?

Accepted Answer

Jugulodigastric node

Answer

Palatine tonsils

Answer

Adenoids

Answer

Lateral pharyngeal bands

Question 6

All of the following are contraindications for rigid esophagoscopy EXCEPT?

Accepted Answer

Stricture

Answer

Trismus

Answer

Aortic aneurysm

Answer

None of the above

Question 7

Which spaces are involved in Ludwig's angina?

Accepted Answer

All of the above

Answer

Sublingual space

Answer

Submandibular space

Answer

Submaxillary space

Question 8

Moure's sign can be detected in which of the following conditions?

Accepted Answer

Postcricoid carcinoma

Answer

Nasopharyngeal carcinoma

Answer

Oropharyngeal carcinoma

Answer

Supraglottic carcinoma

Question 9

An 18-year-old boy presented with repeated epistaxis and a mass arising from the lateral wall of his nose extending into the nasopharynx. All of the following are true regarding his management except?

Accepted Answer

Transmaxillary approach is used

Answer

Requires adequate amount of blood to be transfused

Answer

A lateral rhinotomy approach may be used

Answer

Transpalatal approach is used

Question 10

A patient presents with extremely enlarged palatine tonsils. Surgical removal of the tonsils is considered. What is a potential complication of this surgery?

Accepted Answer

Loss of taste in the posterior one-third of the tongue and possible difficulty in swallowing.

Answer

Loss of taste in the anterior two-thirds of the tongue.

Answer

Inability to protrude the tongue.

Answer

Weakness in opening the mouth due to damage to the lateral pterygoid muscle innervation.

Diseases of the Pharynx — MCQs

Diseases of the Pharynx — MCQs

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