Diseases of the Pharynx Practice Questions

Q: A 13-year-old boy presents with swelling in the cheek with recurrent epistaxis. What is the most likely cause?

Angiofibroma. **Explanation:** The clinical presentation of a **13-year-old boy** with **recurrent epistaxis** and a **cheek swelling** is a classic "spotter" for **Juvenile Nasopharyngeal Angiofibroma (JNA)**. **Why Angiofibroma is Correct:** JNA is a benign but locally aggressive, highly vascular tumor that occurs almost exclusively in **adolescent males** (testosterone-dependent). It typically originates at the sphenopalatine foramen. * **Epistaxis:** Due to the extreme vascularity of the tumor. * **Cheek Swelling:** As the tumor grows, it spreads laterally from the pterygopalatine fossa into the infratemporal fossa, causing a characteristic bulge in the cheek (known as **Frog Face deformity** in advanced cases or **Holman-Miller sign** on imaging). **Why Other Options are Incorrect:** * **B. Carcinoma of Nasopharynx:** While it can cause epistaxis and nasal obstruction, it is rare in early adolescence and more commonly presents with cervical lymphadenopathy and serous otitis media rather than a cheek swelling. * **C. Rhabdomyosarcoma:** This is the most common soft tissue sarcoma in children. While it can occur in the head and neck, it typically presents as a rapidly enlarging, painful mass and is less likely to present with the classic triad of adolescent male + profuse epistaxis + cheek swelling. **NEET-PG High-Yield Pearls:** * **Holman-Miller Sign (Antral Sign):** Forward bowing of the posterior wall of the maxillary sinus seen on CT/MRI. * **Investigation of Choice:** Contrast-Enhanced CT (CECT) scan. * **Gold Standard Diagnosis:** Digital Subtraction Angiography (DSA) – shows a "tumor blush." * **Contraindication:** **Biopsy is strictly contraindicated** in the OPD due to the risk of torrential hemorrhage. * **Treatment:** Surgical excision (usually preceded by preoperative embolization to reduce blood loss).

Q: What is the distinguishing feature of a masticatory space infection?

Trismus. **Explanation:** The **masticatory space** contains the muscles of mastication (masseter, medial and lateral pterygoids, and the temporalis tendon), the ramus of the mandible, and the inferior alveolar nerve. **Why Trismus is the Correct Answer:** Trismus (lockjaw) is the hallmark clinical feature of a masticatory space infection. This occurs because the infection causes **inflammatory irritation or "splinting" of the masticatory muscles**, particularly the masseter and the medial pterygoid. Any attempt to open the mouth stretches these inflamed muscles, causing intense pain and reflex spasms, leading to a significant restriction in mouth opening. **Analysis of Incorrect Options:** * **A. Pain:** While pain is almost always present in deep neck space infections, it is a non-specific finding seen in peritonsillar abscesses, parapharyngeal infections, and retropharyngeal abscesses. * **B. Dysphagia:** Difficulty swallowing is more characteristic of infections involving the **parapharyngeal or retropharyngeal spaces**, where the inflammation is closer to the oropharyngeal airway and food passage. * **D. Swelling:** Swelling in masticatory space infections is often localized over the angle of the jaw or the cheek. However, because the infection is deep to the thick masseteric fascia, external swelling may be minimal or late-appearing compared to the early onset of trismus. **NEET-PG High-Yield Pearls:** * **Source of Infection:** Most commonly arises from the **mandibular third molar** (wisdom tooth) infections. * **Clinical Presentation:** Severe trismus with swelling over the ramus of the mandible. * **Management:** Requires intravenous antibiotics and, if an abscess forms, intraoral or extraoral incision and drainage. * **Differential:** If a patient has trismus but *no* dental cause, always rule out a **parapharyngeal space infection** (specifically the anterior compartment).

Q: Tonsillectomy following peritonsillar abscess is typically done after how many weeks?

8 weeks. **Explanation:** The standard management for a peritonsillar abscess (Quinsy) involves immediate incision and drainage followed by a course of antibiotics. However, because Quinsy often recurs, an **interval tonsillectomy** is recommended. **Why 8 weeks is the correct answer:** Performing surgery during the acute phase of infection is avoided due to extreme vascularity and tissue friability, which significantly increases the risk of intraoperative hemorrhage. Waiting for **6 to 8 weeks** (with 8 weeks being the standard textbook recommendation for NEET-PG) allows the acute inflammation and edema to subside and the surrounding tissues to fibrose. This makes the dissection of the tonsil from its bed safer and reduces the risk of primary and reactionary hemorrhage. **Analysis of Incorrect Options:** * **3 weeks (Option A):** This is too early. The inflammatory process is still resolving, and the risk of bleeding remains high. * **6 weeks (Option C):** While some clinical practices consider 6 weeks acceptable, standard academic guidelines and competitive exams prioritize **8 weeks** as the optimal window for complete resolution. * **12 weeks (Option D):** While safe, waiting 3 months is unnecessarily long and increases the window of time during which a patient might suffer a recurrent episode of tonsillitis or abscess. **High-Yield Clinical Pearls for NEET-PG:** * **Abscess Tonsillectomy (Quinsy Tonsillectomy):** This refers to performing the surgery *during* the acute phase. It is rarely done but may be indicated in children who cannot cooperate with drainage under local anesthesia. * **Most common site for Quinsy:** The superior pole of the tonsil (peritonsillar space). * **Most common organism:** *Streptococcus pyogenes* (Group A Beta-hemolytic Strep). * **Clinical Sign:** Deviation of the uvula to the opposite side and presence of trismus (due to irritation of the medial pterygoid muscle).

Q: What is another name for the parapharyngeal space?

Lateral pharyngeal space. **Explanation:** The **parapharyngeal space** (also known as the **lateral pharyngeal space** or pharyngomaxillary space) is a potential space shaped like an inverted pyramid, located lateral to the pharynx. It is bounded medially by the buccopharyngeal fascia and laterally by the pterygoid muscles and the parotid gland. It is divided into prestyloid and poststyloid compartments by the styloid process and its attached muscles. **Why Option C is correct:** The term "lateral pharyngeal space" is the anatomical synonym for the parapharyngeal space because of its position lateral to the superior constrictor muscle of the pharynx. **Why other options are incorrect:** * **A. Retropharyngeal space:** This is a separate midline space located *behind* the pharynx, between the buccopharyngeal fascia and the prevertebral fascia. It is separated from the parapharyngeal space by the carotid sheath. * **B. Pyriform sinus:** This is a clinical landmark within the laryngopharynx (hypopharynx), not a deep neck space. It is a mucosal recess located on either side of the laryngeal inlet. **High-Yield Clinical Pearls for NEET-PG:** * **Shape:** Inverted pyramid with its apex at the greater cornu of the hyoid bone. * **Contents (Poststyloid):** Internal carotid artery, internal jugular vein, cranial nerves IX, X, XI, XII, and the cervical sympathetic chain. * **Clinical Significance:** Infections (often from the tonsils or teeth) can lead to a parapharyngeal abscess, characterized by **trismus** (due to medial pterygoid involvement) and **bulging of the lateral pharyngeal wall** (displacing the tonsil medially). * **Danger:** It communicates with the retropharyngeal and submandibular spaces, providing a route for the spread of infection to the mediastinum.

Q: Which of the following is FALSE about Zenker Diverticulum?

It is associated with cervical webs. **Explanation:** Zenker’s Diverticulum (ZD) is a **pulsion diverticulum** caused by the herniation of the pharyngeal mucosa through a point of weakness in the posterior pharyngeal wall. **Why Option D is False:** Zenker’s Diverticulum is primarily associated with **cricopharyngeal hypertrophy** or incoordination (achalasia), leading to increased intraluminal pressure. It is **not** typically associated with cervical webs. Cervical webs are classically associated with **Plummer-Vinson Syndrome** (Paterson-Brown-Kelly Syndrome), which presents with iron deficiency anemia and post-cricoid dysphagia. **Analysis of Other Options:** * **Option A:** ZD is a disease of the elderly, most commonly presenting in patients **> 50–60 years** due to age-related loss of muscle elasticity. * **Option B:** It is indeed the **most common** diverticulum of the esophagus (specifically, it is a "false" diverticulum of the pharyngoesophageal junction). * **Option C:** It occurs through **Killian’s Dehiscence**, a triangular weak area between the thyropharyngeus and cricopharyngeus muscles (both parts of the inferior constrictor). **High-Yield Clinical Pearls for NEET-PG:** * **Classic Triad:** Dysphagia, Halitosis (due to food stagnation), and Regurgitation of undigested food. * **Boyce’s Sign:** Gurgling sound on pressing the lateral side of the neck. * **Investigation of Choice:** Barium Swallow (shows a "pouch" behind the esophagus). * **Management:** Endoscopic Dohlman’s procedure (stapling) or Cricopharyngeal Myotomy. * **Risk:** Endoscopy/NG tube insertion is risky due to the high chance of pouch perforation.

Q: Which of the following statements regarding the nasopharynx is incorrect?

Passavant's muscle is formed by the stylopharyngeus muscle.. ### Explanation **1. Why Option D is the Correct (Incorrect Statement) Answer:** Passavant’s muscle (or Passavant’s ridge) is **not** formed by the stylopharyngeus. It is formed by the horizontal fibers of the **Palatopharyngeus muscle** (specifically the superior constrictor and palatopharyngeus complex). During swallowing or speech, these fibers contract to form a ridge on the posterior pharyngeal wall, which meets the elevated soft palate to seal the nasopharyngeal isthmus (velopharyngeal closure). The stylopharyngeus is a longitudinal muscle that elevates the larynx and pharynx. **2. Analysis of Other Options:** * **Option A:** The nasopharynx is indeed referred to as the **epipharynx** (the uppermost part of the pharynx). * **Option B:** The lateral wall of the nasopharynx contains the **Eustachian tube orifice**, which is bounded superiorly and posteriorly by the torus tubarius. * **Option C:** The **Fossa of Rosenmuller** (pharyngeal recess) lies behind the torus tubarius. It is the most common site for Nasopharyngeal Carcinoma. Its deep relation is the **internal carotid artery**, making it a critical anatomical landmark during surgery. **3. High-Yield Clinical Pearls for NEET-PG:** * **Fossa of Rosenmuller:** Most common site of origin for Nasopharyngeal Carcinoma (NPC). * **Trotter’s Triad (NPC):** 1. Conductive deafness (Eustachian tube blockage), 2. Ipsilateral temporofacial neuralgia (CN V involvement), 3. Palatal paralysis (CN X involvement). * **Passavant’s Ridge:** Essential for preventing nasal regurgitation of food and hypernasal speech. * **Eustachian Tube:** Connects the nasopharynx to the middle ear; its dysfunction leads to Otitis Media with Effusion (OME).

Q: Ludwig's angina occurs due to infection of which space?

Submandibular space. **Explanation:** **Ludwig’s Angina** is a rapidly spreading, life-threatening cellulitis (not an abscess) involving the **submandibular space**. This space is anatomically divided by the mylohyoid muscle into the sublingual space (above) and the submaxillary space (below). In Ludwig’s angina, the infection must involve **all three compartments** (bilateral submaxillary and sublingual spaces) to meet the clinical definition. * **Why Submandibular Space is correct:** The most common cause (80%) is dental infection, typically involving the **2nd and 3rd mandibular molars**. Their roots extend below the mylohyoid line, allowing infection to spread directly into the submandibular space. * **Why other options are incorrect:** * **Retropharyngeal space:** Infection here (Retropharyngeal abscess) usually occurs in children due to suppuration of the nodes of Rouviere or in adults due to trauma/Pott’s disease. * **Pharyngomaxillary (Parapharyngeal) space:** Infection here presents with trismus and lateral pharyngeal wall bulging, often following tonsillitis or dental work. * **Peritonsillar space:** Infection here (Quinsy) is a localized complication of acute tonsillitis, characterized by uvular deviation to the opposite side. **High-Yield Clinical Pearls for NEET-PG:** 1. **Key Clinical Features:** "Woody" hard swelling of the neck, elevation and protrusion of the tongue (causing airway obstruction), and absence of fluctuance (as it is cellulitis). 2. **Primary Risk:** Asphyxia due to laryngeal edema is the most common cause of death. 3. **Management:** Airway maintenance is the priority (Tracheostomy if needed). Treatment involves high-dose IV antibiotics and surgical decompression (incision and drainage) if medical therapy fails. 4. **Microbiology:** Usually a mixed infection (Streptococcus, Staphylococcus, and anaerobes).

Q: A 40-year-old patient presents with koilonychia, iron deficiency, and dysphagia. What is the most likely diagnosis?

Plummer-Vinson syndrome. ### Explanation The correct answer is **Plummer-Vinson syndrome (PVS)**, also known as Paterson-Brown-Kelly syndrome. **1. Why Option A is Correct:** Plummer-Vinson syndrome is classically characterized by a clinical triad: * **Iron Deficiency Anemia:** Presents with systemic symptoms and signs like **koilonychia** (spoon-shaped nails) and glossitis. * **Dysphagia:** Usually painless and progressive, specifically for solids. * **Post-cricoid Esophageal Webs:** These are thin, mucosal folds in the upper esophagus that cause the obstruction. The patient in the question exhibits the complete classic presentation: iron deficiency (anemia), koilonychia (the physical manifestation of chronic iron deficiency), and dysphagia (due to the web). **2. Why Other Options are Incorrect:** * **Option B (Achalasia cardia):** This is a motility disorder of the lower esophageal sphincter (LES). While it causes dysphagia, it typically involves both solids and liquids from the start and is not associated with iron deficiency or koilonychia. * **Option C (Zollinger-Ellison syndrome):** This involves gastrin-secreting tumors leading to severe peptic ulcer disease and diarrhea. It does not cause esophageal webs or koilonychia. **3. NEET-PG High-Yield Pearls:** * **Demographics:** Most common in middle-aged females (4th to 5th decade). * **Pre-malignant Condition:** PVS is a significant risk factor for **Post-cricoid Squamous Cell Carcinoma**. Regular follow-up is essential. * **Diagnosis:** The investigation of choice to visualize the web is a **Barium Swallow** (lateral view), though esophagoscopy can be both diagnostic and therapeutic (by rupturing the web). * **Treatment:** The primary treatment is **Iron supplementation**, which often resolves the dysphagia. Mechanical dilation is reserved for persistent webs.

Q: Dysphagia lusoria is caused by:

Vascular anomaly. **Explanation:** **Dysphagia Lusoria** (literally "dysphagia by a trick of nature") is a clinical condition where difficulty in swallowing occurs due to extrinsic compression of the esophagus by a **vascular anomaly**. The most common underlying cause is an **aberrant right subclavian artery**. In this congenital anomaly, the right subclavian artery arises directly from the aortic arch (distal to the left subclavian) instead of the brachiocephalic trunk. To reach the right side, the artery typically passes behind the esophagus (retro-esophageal), creating a mechanical indentation that leads to dysphagia. **Analysis of Options:** * **Option C (Correct):** It is fundamentally a vascular malformation causing mechanical obstruction. * **Option A (Incorrect):** While the name sounds similar to neurological conditions, there is no primary neural deficit or motor incoordination involved. * **Option B (Incorrect):** Malabsorption is a functional disorder of the small intestine and does not cause structural dysphagia. **High-Yield Clinical Pearls for NEET-PG:** * **Barium Swallow Finding:** Shows a characteristic **oblique or spiral indentation** on the posterior aspect of the esophagus at the level of the 3rd or 4th thoracic vertebrae. * **Bayford’s Syndrome:** Another name for Dysphagia Lusoria, named after David Bayford who first described it in 1787. * **Associated Sign:** It may be associated with a "Kommerell’s diverticulum" (a dilation at the origin of the aberrant vessel). * **Treatment:** Most cases are asymptomatic and managed conservatively; severe cases require surgical vascular reconstruction.

Question 1

A 13-year-old boy presents with swelling in the cheek with recurrent epistaxis. What is the most likely cause?

Accepted Answer

Angiofibroma

Answer

Carcinoma of Nasopharynx

Answer

Rhabdomyosarcoma

Answer

None of the above

Question 2

What is the distinguishing feature of a masticatory space infection?

Accepted Answer

Trismus

Answer

Pain

Answer

Dysphagia

Answer

Swelling

Question 3

What is the management of a prevertebral abscess diagnosed as tuberculosis in a 44-year-old woman experiencing difficulty in swallowing?

Accepted Answer

Urgent drainage

Answer

Starting anti-tuberculosis chemotherapy (AKT)

Answer

Observation (wait and watch)

Answer

MRI of the cervical spine

Question 4

Tonsillectomy following peritonsillar abscess is typically done after how many weeks?

Accepted Answer

8 weeks

Answer

3 weeks

Answer

6 weeks

Answer

12 weeks

Question 5

What is another name for the parapharyngeal space?

Accepted Answer

Lateral pharyngeal space

Answer

Retropharyngeal space

Answer

Pyriform sinus

Answer

All of the above

Question 6

Which of the following is FALSE about Zenker Diverticulum?

Accepted Answer

It is associated with cervical webs

Answer

Most common age of presentation is > 50 years

Answer

It is the most common type of esophageal diverticulum

Answer

It occurs via Kilian's dehiscence

Question 7

Which of the following statements regarding the nasopharynx is incorrect?

Accepted Answer

Passavant's muscle is formed by the stylopharyngeus muscle.

Answer

It is also called the epipharynx.

Answer

The lateral wall features the pharyngeal opening of the Eustachian tube.

Answer

The fossa of Rosenmuller corresponds to the internal carotid artery.

Question 8

Ludwig's angina occurs due to infection of which space?

Accepted Answer

Submandibular space

Answer

Retropharyngeal space

Answer

Pharyngomaxillary space

Answer

Peritonsillar space

Question 9

A 40-year-old patient presents with koilonychia, iron deficiency, and dysphagia. What is the most likely diagnosis?

Accepted Answer

Plummer-Vinson syndrome

Answer

Achalasia cardia

Answer

Zollinger-Ellison syndrome

Answer

None of the above

Question 10

Dysphagia lusoria is caused by:

Accepted Answer

Vascular anomaly

Answer

Neural anomaly

Answer

Malabsorption

Answer

Other

Diseases of the Pharynx — MCQs

Diseases of the Pharynx — MCQs

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