Head and Neck Surgery Practice Questions

Q: Which is the ideal position for nasogastric tube insertion?

Sitting with neck flexed. **Explanation:** The ideal position for nasogastric (NG) tube insertion is **Sitting with the neck flexed** (often referred to as the "High Fowler’s position with a chin-tuck maneuver"). **Why it is correct:** The primary goal during NG tube insertion is to ensure the tube enters the esophagus rather than the trachea. Flexing the neck (chin-to-chest) performs two critical anatomical functions: 1. It physically narrows the airway opening by bringing the larynx forward. 2. It opens the posterior oropharyngeal path toward the esophagus. When the patient is sitting upright, gravity assists the passage of the tube, and the flexion maneuver makes the esophagus the path of least resistance. **Why the other options are incorrect:** * **Neck Extended (Options A & C):** Extending the neck straightens the air passage toward the trachea. This significantly increases the risk of accidental tracheal intubation and aspiration. * **Supine Position (Options B & C):** While NG tubes can be inserted in supine patients (e.g., in the ICU), it is not "ideal." The supine position increases the risk of gagging and pulmonary aspiration of gastric contents compared to the sitting position. **Clinical Pearls for NEET-PG:** * **Measurement:** The length of the tube to be inserted is determined by the distance from the **Nose to the Earlobe to the Xiphoid process (NEX measurement)**. * **Gold Standard for Confirmation:** While auscultation of an air bolus ("whoosh test") is common, the **Chest X-ray** is the most reliable method to confirm correct placement before starting feeds. * **pH Testing:** A gastric aspirate with a **pH < 5.5** is a reliable bedside indicator of gastric placement. * **Coiling:** If the patient starts coughing or gasping, the tube is likely in the larynx; withdraw immediately.

Q: In which one of the following, perineural invasion in head and neck cancer is most commonly seen?

Adenoid cystic carcinoma. **Explanation:** **Adenoid cystic carcinoma (ACC)** is the correct answer because it is classically characterized by its high propensity for **perineural invasion (PNI)**. This tumor typically arises in the minor salivary glands (most commonly the palate) and the submandibular gland. The tumor cells have a unique affinity for nerve sheaths, often spreading far beyond the visible tumor margins via cranial nerves (e.g., the facial nerve or trigeminal nerve). This characteristic explains the high rates of local recurrence and the frequent clinical presentation of pain or nerve palsies. **Analysis of Incorrect Options:** * **Adenocarcinoma:** While it can show PNI, it is not its defining or most common feature compared to ACC. * **Basal cell adenoma:** This is a **benign** salivary gland tumor. Perineural invasion is a hallmark of malignancy; therefore, it is not seen in benign lesions. * **Squamous cell carcinoma (SCC):** SCC is the most common head and neck cancer overall and *can* exhibit PNI (especially in high-grade cases), but it is not as pathognomonic or frequent as it is in Adenoid Cystic Carcinoma. **High-Yield Clinical Pearls for NEET-PG:** * **Histology of ACC:** Look for the characteristic **"Swiss cheese" appearance** (Cribriform pattern). * **Spread:** ACC is known for "skip lesions" along nerves and has a high rate of **distant metastasis** (most commonly to the **lungs**) via the bloodstream, even when local lymph nodes are negative. * **Prognosis:** It is a slow-growing but relentless "indolent" tumor with a poor long-term prognosis. * **Treatment:** Radical surgical excision with wide margins followed by adjuvant radiotherapy is the standard of care due to the risk of microscopic perineural spread.

Q: What is the treatment for lower lip carcinoma less than 1 cm?

Surgical excision. **Explanation:** The primary treatment for early-stage (T1) lower lip carcinoma, specifically lesions less than 1 cm, is **surgical excision**. The goal is to achieve a wide local excision with a 5–10 mm clear margin. For lesions of this size, a **V-shaped or wedge resection** is typically performed, allowing for primary closure with excellent functional and cosmetic outcomes. **Why the other options are incorrect:** * **Radiotherapy (A):** While radiotherapy is an alternative for T1-T2 lesions and offers similar control rates, it is generally reserved for patients who are medically unfit for surgery or for larger lesions where surgery would cause significant cosmetic deformity. Surgery is preferred for small lesions because it is quicker, more cost-effective, and avoids long-term radiation side effects (e.g., xerostomia, osteoradionecrosis). * **Chemotherapy (B):** Chemotherapy is not used as a primary or definitive treatment for localized lip cancer. It is typically reserved for palliative care or as part of a concurrent chemoradiation protocol for advanced, inoperable cases. * **Radiotherapy + Chemotherapy (D):** This combination is indicated for advanced (Stage III/IV) disease or high-risk features (positive margins, perineural invasion) but is overtreatment for a <1 cm lesion. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site:** Lower lip (90%) due to chronic sun exposure (UV radiation). * **Histology:** Squamous Cell Carcinoma (SCC) is the most common type. * **Lymphatic spread:** Lower lip cancers primarily drain to **Submental (Level Ia)** and **Submandibular (Level Ib)** nodes. * **Rule of Thirds:** If a defect after excision is 2/3rd, use a **Karapandzic** flap.

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

Which is the ideal position for nasogastric tube insertion?

Accepted Answer

Sitting with neck flexed

Answer

Sitting with neck extended

Answer

Supine with neck flexed

Answer

Supine with neck extended

Question 2

In which one of the following, perineural invasion in head and neck cancer is most commonly seen?

Accepted Answer

Adenoid cystic carcinoma

Answer

Adenocarcinoma

Answer

Basal cell adenoma

Answer

Squamous cell carcinoma

Question 3

What is the treatment for lower lip carcinoma less than 1 cm?

Accepted Answer

Surgical excision

Answer

Radiotherapy

Answer

Chemotherapy

Answer

Radiotherapy + Chemotherapy

Question 4

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 5

What anatomical structures are preserved during a radical neck dissection?

Accepted Answer

Carotid arteries

Answer

Jugular vein

Answer

Accessory nerve

Answer

Sternocleidomastoid muscle

Question 6

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 7

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 8

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 9

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 10

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

Head and Neck Surgery — MCQs

Head and Neck Surgery — MCQs

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