Head and Neck Surgery Practice Questions

Q: What anatomical structures are preserved during a radical neck dissection?

Carotid arteries. ### Explanation In surgical oncology, understanding the classification of neck dissections is vital for NEET-PG. The distinction lies in which non-lymphatic structures are removed versus preserved. **1. Why Carotid Arteries are the Correct Answer:** A **Radical Neck Dissection (RND)**, as originally described by Crile, involves the removal of all lymph node groups from levels I to V. However, it specifically **preserves the carotid arteries** (Internal, External, and Common), the Vagus nerve, and the Hypoglossal nerve. These structures are essential for life and basic neurological function and are never routinely sacrificed unless there is direct, gross tumor invasion. **2. Why the Other Options are Incorrect:** The "Classical" Radical Neck Dissection is defined by the intentional removal of three specific non-lymphatic structures to ensure oncological clearance: * **Jugular vein (Internal Jugular Vein - IJV):** Removed in RND. * **Accessory nerve (Spinal Accessory Nerve - SAN):** Removed in RND, leading to shoulder drop/trapezius atrophy. * **Sternocleidomastoid muscle (SCM):** Removed in RND to access deep cervical nodes. **3. Clinical Pearls for NEET-PG:** * **Modified Radical Neck Dissection (MRND):** This is the most common variant where lymph nodes (I-V) are removed, but one or more of the three structures (SAN, IJV, SCM) are **preserved**. * *Type I:* SAN preserved. * *Type II:* SAN and IJV preserved. * *Type III (Functional Neck Dissection):* All three (SAN, IJV, SCM) are preserved. * **Selective Neck Dissection:** Only specific lymph node levels are removed (e.g., Supraomohyoid dissection for oral cavity cancers). * **High-Yield Fact:** The most common nerve injured during neck surgery causing "winged scapula" is the **Long Thoracic Nerve**, but the nerve routinely sacrificed in RND causing shoulder disability is the **Spinal Accessory Nerve**.

Q: What is the treatment of choice for Warthin tumor?

Superficial parotidectomy. **Explanation:** Warthin tumor (also known as **Papillary Cystadenoma Lymphomatosum**) is the second most common benign salivary gland tumor, typically occurring in the tail of the parotid gland. **1. Why Superficial Parotidectomy is the Correct Answer:** The standard treatment for Warthin tumor is **Superficial Parotidectomy**. This involves removing the superficial lobe of the parotid gland while carefully preserving the facial nerve. This approach is preferred because it ensures complete removal of the tumor with a margin of healthy tissue, minimizing the risk of recurrence (which is about 2-5%) and avoiding the high risk of seeding associated with simpler procedures. **2. Why Other Options are Incorrect:** * **Radical Parotidectomy:** This involves sacrificing the facial nerve and is reserved for high-grade malignancies with nerve involvement. Warthin tumor is benign and does not require such aggressive surgery. * **Superficial Parotidectomy with Neck Dissection:** Neck dissection is indicated for malignant tumors with suspected nodal metastasis. Warthin tumor is benign and does not metastasize. * **Enucleation:** Simply "shelling out" the tumor carries a high risk of rupture and recurrence. While some modern literature discusses "extracapsular dissection," traditional enucleation is generally discouraged in standard surgical teaching for parotid tumors. **High-Yield Clinical Pearls for NEET-PG:** * **Epidemiology:** Strongly associated with **smoking** and more common in **males** (though the gender gap is narrowing). * **Location:** Most common tumor to be **bilateral** (10%) or multicentric. * **Diagnosis:** On Technetium-99m pertechnetate scan, it appears as a **"Hot Nodule"** (due to the presence of oncocytes). * **Pathology:** Characterized by a double layer of epithelial cells (oncocytes) and a dense lymphoid stroma with germinal centers.

Q: Which of the following is NOT a feature of submucosal cleft palate?

Lip pits. ### Explanation **Submucosal Cleft Palate (SMCP)** is a specific type of clefting where the underlying palatal musculature (levator veli palatini) fails to fuse in the midline, despite the overlying mucous membrane remaining intact. **Why "Lip pits" is the correct answer:** Congenital **lip pits** (paramedian pits on the lower lip) are the hallmark feature of **Van der Woude Syndrome**, which is the most common syndromic cause of orofacial clefts. While they are associated with cleft lip and palate, they are **not** a diagnostic feature of the submucosal cleft palate itself. **Analysis of incorrect options (The Classic Triad):** The diagnosis of SMCP is clinical and is classically defined by **Calnan’s Triad**: 1. **Bifid Uvula (Option A):** The most common and visible sign; the uvula appears split or "fish-tailed." 2. **Notched Hard Palate (Option B):** A palpable V-shaped notch at the posterior border of the hard palate due to the absence of the posterior nasal spine. 3. **Zona Pellucida (Option D):** A thin, translucent bluish area in the midline of the soft palate caused by the diastasis (separation) of the palatal muscles, leaving only a thin layer of mucosa. **High-Yield Clinical Pearls for NEET-PG:** * **Velopharyngeal Insufficiency (VPI):** Patients with SMCP often present with hypernasal speech and nasal regurgitation of fluids because the maloriented muscles cannot effectively close the nasopharynx. * **Management:** Not all cases require surgery. Treatment (Pharyngoplasty or Furlow Palatoplasty) is indicated only if the patient develops speech defects or significant VPI. * **Gutzmann’s Test:** A clinical test used to detect the hypernasality associated with cleft palate.

Q: What is described as a cystic compressible, translucent swelling in the posterior triangle of the neck?

Cystic hygroma. ### Explanation **Cystic Hygroma** is a congenital malformation of the lymphatic system (lymphangioma) resulting from the failure of lymphatics to connect with the venous system. It typically presents at birth or in early childhood. **Why it is the correct answer:** * **Location:** It most commonly occurs in the **posterior triangle** of the neck (behind the sternocleidomastoid). * **Physical Characteristics:** It is a **cystic, soft, and compressible** mass. Because it contains clear lymph and has thin walls, it is classically **brilliantly translucent** (positive transillumination test). It is often described as a "brilliant" swelling because it lacks a solid capsule and infiltrates tissue planes. **Why the other options are incorrect:** * **Branchial Cyst:** Typically located in the **upper third of the neck**, along the anterior border of the sternocleidomastoid (anterior triangle). It is usually opaque (not translucent) due to cholesterol crystals in the fluid. * **Thyroglossal Cyst:** Found in the **midline** of the neck, usually at the level of the hyoid bone. Its hallmark is that it moves upward on protrusion of the tongue. * **Dermoid Cyst:** Usually occurs in the **midline** (submental region). It has a "doughy" consistency and is **not translucent** because it contains sebaceous material and hair. **High-Yield Clinical Pearls for NEET-PG:** * **Association:** Frequently associated with chromosomal abnormalities like **Turner syndrome** and Down syndrome. * **Complications:** Sudden increase in size usually indicates **hemorrhage** into the cyst or infection. * **Management:** Surgical excision is the gold standard, though sclerotherapy (e.g., OK-432, Bleomycin) is an alternative for macrocystic lesions. * **Cross-illumination:** If a torch is pressed against one side, the entire swelling lights up, confirming its fluid-filled, thin-walled nature.

Question 1

A 7-year-old boy presented with a fracture of the left subcondylar region with undisturbed occlusion. What is the recommended treatment?

Accepted Answer

No immobilization and active treatment

Answer

Immobilization for 7 days

Answer

Immobilization for 14 days with intermittent active opening

Answer

No immobilization with restricted mouth opening for 10 days

Question 2

What anatomical structures are preserved during a radical neck dissection?

Accepted Answer

Carotid arteries

Answer

Jugular vein

Answer

Accessory nerve

Answer

Sternocleidomastoid muscle

Question 3

What is the treatment of choice for Warthin tumor?

Accepted Answer

Superficial parotidectomy

Answer

Radical parotidectomy

Answer

Superficial parotidectomy with neck dissection

Answer

Enucleation

Question 4

Which of the following statements regarding lip carcinoma is false?

Accepted Answer

Lower lip carcinoma has a worse prognosis compared to other oral cancers.

Answer

Smoking is a significant risk factor.

Answer

It is more common in the lower lip.

Answer

Distant metastasis occurs late in the disease progression.

Question 5

Which of the following is NOT a feature of submucosal cleft palate?

Accepted Answer

Lip pits

Answer

Bifid uvula

Answer

Notched hard palate

Answer

Zona pellucida

Question 6

What is described as a cystic compressible, translucent swelling in the posterior triangle of the neck?

Accepted Answer

Cystic hygroma

Answer

Branchial cyst

Answer

Thyroglossal cyst

Answer

Dermoid cyst

Question 7

During dental extraction, a tuberosity fracture is noted where the fractured segment remains attached to the mucoperiosteum with an intact blood supply. What is the appropriate treatment?

Accepted Answer

Reposition the fractured fragments and stabilize with sutures

Answer

Remove the fractured tuberosity

Answer

Refer to an oral surgeon

Answer

Elevate a flap and perform transosseous wiring

Question 8

A 35-year-old male presents with squamous cell carcinoma of the tongue, staged as T2N0M0. What is the most likely treatment for this patient?

Accepted Answer

Suction-assisted oropharyngeal tumor resection with neck dissection

Answer

Level 1-2 lymph node excision

Answer

Level 1-5 lymph node dissection

Answer

Level 1-6 lymph node dissection

Question 9

Howe and Poyton (1960) developed criteria to diagnose the relationship of the root apices of impacted 3rd molars to the inferior alveolar canal?

Accepted Answer

Relationship of the root apices of impacted 3rd molars to the inferior alveolar canal

Answer

Relation of long axis of the impacted tooth to the long axis of the second molar

Answer

Configuration of the roots of the impacted mandibular 3rd molar

Answer

Position and depth of the impacted mandibular 3rd molar

Question 10

A 6-year-old girl presents with a several-week history of an anterior cervical midline mass and throat pain. Following a course of antibiotics, her inflammation and erythema resolved, but the mass persisted. Her mother recalls similar symptoms when the child was 3 years old, which resolved spontaneously. The mass appears to rise upward when the girl sticks out her tongue. What is the most common diagnosis?

Accepted Answer

Thyroglossal duct cyst

Answer

Lingual thyroid

Answer

Branchial cleft remnant

Answer

Cervical neck abscess

Head and Neck Surgery — MCQs

Head and Neck Surgery — MCQs

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