Head and Neck Surgery — MCQs

Head and Neck Surgery Indian Medical PG Practice Questions and MCQs

Question 501: Which tumor is most commonly known to extend from the intracranial space to the orbit?

A. Astrocytoma
B. Pituitary adenoma
C. Craniopharyngioma
D. Sphenoidal wing meningioma (Correct Answer)

Explanation: ***Sphenoidal wing meningioma*** - Sphenoidal wing meningiomas are uniquely positioned to extend from the **intracranial space** into the orbit due to their origin near the sphenoid bone. - Their growth patterns often involve direct invasion or spread through foramina, leading to **orbital involvement** and associated symptoms like proptosis. *Astrocytoma* - While astrocytomas can be aggressive and infiltrate surrounding brain tissue, they are primarily **parenchymal brain tumors** and less commonly extend directly into the orbit from an intracranial origin. - Orbital invasion by astrocytomas usually occurs in the context of **optic pathway gliomas**, which specifically arise from the optic nerve within the orbit or optic chiasm. *Pituitary adenoma* - Pituitary adenomas originate in the **sella turcica** and typically grow superiorly, causing **chiasmal compression** and visual field defects. - Direct extension into the orbit is uncommon unless there is very extensive and aggressive growth, which is not their most common mode of spread. *Craniopharyngioma* - Craniopharyngiomas are typically located in the **suprasellar region**, near the pituitary stalk and third ventricle. - While they can exert mass effect on orbital structures, their primary mode of extension is not direct invasion of the orbit from an **intracranial primary location**.

Question 502: Treatment of choice for carcinoma of the maxillary sinus with T3N0M0?

A. Surgery
B. Radiotherapy
C. Surgery and Radiotherapy (Correct Answer)
D. Surgery and chemotherapy

Explanation: ***Surgery and Radiotherapy*** - For **T3N0M0 maxillary sinus carcinoma**, a multidisciplinary approach involving both **surgery** (for primary tumor resection) and **postoperative adjuvant radiotherapy** is the preferred treatment. - This combined modality offers the best chance for **local control** and improved survival due to the aggressive nature and potential for microscopic residual disease in T3 tumors. *Surgery* - While surgery is crucial for removing the primary tumor, it alone may not be sufficient for **T3 tumors** due to the high risk of **microscopic residual disease** at the margins. - **Single modality treatment** with surgery for T3 tumors often results in higher rates of **local recurrence**. *Radiotherapy* - **Radiotherapy alone** is generally reserved for unresectable tumors or in cases where surgery is contraindicated due to comorbidities. - It may not achieve adequate **tumor eradication** as a primary standalone treatment for a T3 tumor without the benefit of surgical debulking. *Surgery and chemotherapy* - **Chemotherapy** is often considered in the context of **neoadjuvant** or **concurrent chemoradiation** for advanced head and neck cancers, or for metastatic disease. - For localized T3N0M0 maxillary sinus carcinoma, the primary adjuvant modality after surgery is **radiotherapy**, with chemotherapy reserved for specific scenarios or advanced stages.

Question 503: Which of the following swellings moves on protrusion of the tongue?

A. Thyroglossal cyst (Correct Answer)
B. Branchial cyst
C. Ranula
D. Cyst in hyoid bone

Explanation: ***Thyroglossal cyst*** - A **thyroglossal cyst** is a remnant of the **thyroglossal duct**, which connects the thyroid gland to the tongue during embryonic development. - Due to its embryological connection with the foramen cecum at the base of the tongue, it moves **superiorly with tongue protrusion** and swallowing. *Branchial cyst* - A **branchial cyst** is a congenital anomaly resulting from the incomplete obliteration of branchial arches, typically presenting laterally in the neck. - It does not have an anatomical connection to the tongue and therefore **does not move with tongue protrusion**. *Ranula* - A **ranula** is a mucocele found on the floor of the mouth, usually caused by obstruction or rupture of a salivary gland duct. - It is located entirely within the oral cavity or submandibular space and **does not move with tongue protrusion**. *Cyst in hyoid bone* - A cyst within the **hyoid bone** itself is exceedingly rare; more commonly, a thyroglossal cyst can be intimately associated with or pass through the hyoid bone. - A cyst within the bone structure would generally not exhibit mobility with tongue protrusion.

Question 504: Which of the following is a midline neck swelling?

A. Carotid body tumor
B. Thyroglossal cyst (Correct Answer)
C. Branchial cyst
D. Cystic hygroma

Explanation: ***Thyroglossal cyst*** - A thyroglossal cyst is a congenital anomaly arising from the **remnant of the thyroglossal duct**, which is the embryonic path of the thyroid gland's descent. - It characteristically presents as a **midline neck swelling**, often just below the hyoid bone, and typically **moves upwards with tongue protrusion**. *Carotid body tumor* - A carotid body tumor, or **chemodectoma**, is usually located in the **lateral neck**, specifically at the carotid bifurcation. - It is typically **pulsatile** and has a characteristic **bruit**, with limited mobility in the horizontal but not vertical plane (Fontaine's sign). *Branchial cyst* - A branchial cyst is a congenital lesion that typically presents in the **lateral neck**, usually anterior to the sternocleidomastoid muscle. - It arises from **incomplete obliteration of the branchial arches** during embryonic development. *Cystic hygroma* - A cystic hygroma is a **lymphatic malformation** that commonly presents as a **soft, compressible mass** in the **posterolateral neck**. - These are typically **transilluminable** and can be quite large, often visible at birth or in early childhood.

Question 505: Following block dissection of the neck, a person is unable to shrug their shoulder and has difficulty turning their head to the opposite side. This is primarily due to damage to which nerve?

A. Cranial accessory nerve
B. Glossopharyngeal nerve
C. Spinal part of the accessory nerve (Correct Answer)
D. Vagus nerve

Explanation: ***Spinal part of the accessory nerve*** - The **spinal accessory nerve (CN XI)** innervates the **trapezius** and **sternocleidomastoid (SCM) muscles**. - **Trapezius** is responsible for **shoulder elevation** (shrugging) and scapular stabilization. - **SCM** rotates the head to the **opposite side** and assists in neck flexion. - Damage to this nerve during neck dissection (particularly radical neck dissection) commonly occurs and leads to shoulder droop, difficulty shrugging, and impaired head rotation. *Glossopharyngeal nerve* - The **glossopharyngeal nerve (CN IX)** primarily functions in **taste** (posterior third of tongue), **swallowing**, and **salivation**. - It has no direct role in head or shoulder movement. - Damage would typically cause dysphagia, loss of gag reflex, or altered taste sensation. *Vagus nerve* - The **vagus nerve (CN X)** controls **heart rate**, **digestion**, **voice production** (via recurrent laryngeal nerve), and pharyngeal muscles. - It does not innervate muscles responsible for head movement or shoulder elevation. - Damage could lead to hoarseness, dysphagia, or autonomic dysfunction. *Cranial accessory nerve* - The **cranial accessory nerve** (cranial root of CN XI) is functionally part of the **vagus nerve** and contributes to innervation of **laryngeal and pharyngeal muscles**. - It does not innervate the sternocleidomastoid or trapezius muscles. - Its damage would affect swallowing and voice, not head or shoulder movement.

Question 506: Which of the following is not a boundary of Jackson's triangle used in tracheotomy?

A. Suprasternal notch
B. Lower edge thyroid cartilage
C. Outer border of sternocleidomastoid (Correct Answer)
D. Inner border of sternocleidomastoid

Explanation: ***Outer border of sternocleidomastoid*** - Jackson's triangle, or the **surgical safety triangle for tracheotomy**, is defined by the **upper border of the sternal manubrium (suprasternal notch)**, the **lower border of the thyroid cartilage**, and the **medial borders of the sternocleidomastoid muscles**. - The **outer border of the sternocleidomastoid** muscle is not one of the boundaries of this specific surgical triangle. *Suprasternal notch* - The **suprasternal notch** (upper border of the sternal manubrium) forms the **inferior boundary** of Jackson's triangle. - This anatomical landmark is crucial for correctly identifying the cricoid cartilage and trachea for a safe tracheotomy. *Lower edge thyroid cartilage* - The **lower edge of the thyroid cartilage** forms the **superior boundary** of Jackson's triangle. - Palpation of this structure helps to locate the cricoid cartilage and the tracheal rings below it. *Inner border of sternocleidomastoid* - The **inner (medial) borders of the sternocleidomastoid muscles** form the two **lateral boundaries** of Jackson's triangle. - These muscles delineate the central neck region where the trachea is accessed during a tracheotomy.

Question 507: A patient presents with a cheek cancer of 2.5 cm size, which is close to and involves the alveolus, and is associated with a single mobile cervical lymph node of 6 cm size. What is the TNM staging?

A. T3 N2
B. T4 N2 (Correct Answer)
C. T3 N3
D. T4 N3

Explanation: ***T4 N2*** - The primary tumor involving the **alveolus (cortical bone invasion)** is classified as **T4a** regardless of size according to AJCC TNM staging for oral cavity cancers. - A single mobile ipsilateral cervical lymph node of **6 cm** is classified as **N2a** (single ipsilateral node, 3-6 cm in greatest dimension). - Therefore, the correct staging is **T4 N2**. *T3 N2* - **T3 classification is incorrect** as alveolar involvement (cortical bone invasion) automatically upgrades the tumor to T4a. - While N2 is correct for a single 6 cm node, the T-stage is underestimated. *T4 N3* - While **T4 is correct** due to alveolar bone involvement, **N3 is incorrect**. - **N3a requires lymph nodes >6 cm** (greater than 6 cm), not equal to 6 cm. - A single 6 cm node falls within the N2a category (3-6 cm range). *T3 N3* - **Both T3 and N3 are incorrect** for this presentation. - Alveolar involvement mandates T4 staging, and a 6 cm node is N2a, not N3.

Question 508: Laser uvulopalatoplasty is indicated for which of the following conditions?

A. Obstructive sleep apnea (Correct Answer)
B. Pharyngotonsillitis
C. Cleft palate
D. Stammering

Explanation: ***Obstructive sleep apnea*** - **Laser uvulopalatoplasty (LUP)** is a surgical procedure that reshapes the **uvula** and **soft palate** to enlarge the airway in patients with **obstructive sleep apnea (OSA)**. - OSA is characterized by repetitive episodes of upper airway obstruction during sleep, leading to snoring, daytime sleepiness, and other health issues. *Pharyngotonsillitis* - This condition involves inflammation of the **pharynx** and **tonsils**, usually caused by bacterial or viral infections. - Treatment typically involves antibiotics for bacterial infections or symptomatic relief for viral infections, not surgical reshaping of the palate. *Cleft palate* - **Cleft palate** is a congenital birth defect where the roof of the mouth does not fully close during fetal development. - The primary treatment involves **surgical repair** to close the opening, which is a different procedure from LUP and focuses on reconstructing normal anatomy. *Stammering* - **Stammering** is a **speech disorder** characterized by disruptions in fluency, such as repetitions, prolongations, or blocks in speech. - It is managed through **speech therapy** and behavioral interventions, and is unrelated to airway obstruction or surgical procedures on the palate.

Question 509: Which of the following statements about Ludwig's angina is true?

A. It is usually unilateral.
B. It spreads by lymphatics.
C. It is primarily a viral infection.
D. It involves both submandibular and sublingual spaces. (Correct Answer)

Explanation: ***It involves both submandibular and sublingual spaces.*** - Ludwig's angina is a rapidly spreading, **bilateral cellulitis** involving the **submandibular, sublingual, and submental spaces**. - Its involvement of these spaces can lead to a characteristic **"brawny" induration** of the neck and elevation of the tongue. - This is the defining anatomical characteristic of Ludwig's angina. *It is primarily a viral infection.* - Ludwig's angina is a **bacterial infection**, not viral. - The most common causative organisms are **oral flora**, including Streptococcus, Staphylococcus, and anaerobes. - **Dental infections** (particularly from the second and third mandibular molars) are the most common source (80-90% of cases). *It is usually unilateral.* - Ludwig's angina is characteristically a **bilateral infection** of the floor of the mouth and neck spaces. - Unilateral involvement would suggest a more localized infection, such as an **abscess**, rather than the diffuse cellulitis of Ludwig's angina. *It spreads by lymphatics.* - Ludwig's angina is a **diffuse cellulitis** that spreads via continuity through **fascial planes** and connective tissues, rather than primarily through the lymphatic system. - The absence of significant **lymphadenopathy** is a key differentiating feature from other neck infections.

Question 510: Patient presents with a mass in the parapharyngeal region pushing the carotid artery backwards; the likely cause is?

A. Carotid body tumor (Correct Answer)
B. Lymph node enlargement
C. Sternocleidomastoid tumor
D. Deep lobe parotid tumor

Explanation: ***Carotid body tumor*** - Carotid body tumors are **paragangliomas** that typically arise at the **carotid bifurcation** and characteristically displace the **carotid artery posteriorly and laterally**. - They are often palpable as a non-tender mass in the anterior neck and can cause symptoms related to **compression of surrounding structures**. - Classic imaging finding is the **"Lyre sign"** showing splaying of the internal and external carotid arteries. *Lymph node enlargement* - Enlarged lymph nodes (e.g., due to infection, inflammation, or malignancy) are typically located **anterior or lateral to the great vessels** and do not characteristically displace the carotid artery in a posterior direction. - They usually cause **anterior or medial displacement** of the carotid vessels. *Sternocleidomastoid tumor* - Tumors of the sternocleidomastoid muscle (e.g., fibromatosis colli in infants, rhabdomyosarcoma) originate within the muscle itself, causing a mass **within the muscle belly**. - These tumors would not typically cause the **posterior displacement of the carotid artery** as described since they are extrinsic to the great vessels. *Deep lobe parotid tumor* - Deep lobe parotid tumors (e.g., pleomorphic adenoma) can present as parapharyngeal masses but typically cause **medial and anterior displacement** of the carotid vessels. - They arise from the **parapharyngeal extension of the parotid gland** and push the carotid space structures differently than carotid body tumors.

Practice by Chapter

Salivary Gland Diseases

Practice Questions

Thyroid Gland Disorders

Practice Questions

Parathyroid Gland Disorders

Practice Questions

Neck Masses Evaluation

Practice Questions

Oral Cavity Lesions

Practice Questions

Laryngeal Disorders

Practice Questions

Head and Neck Cancer

Practice Questions

Reconstructive Techniques in Head and Neck Surgery

Practice Questions

Surgical Management of Sleep Apnea

Practice Questions

Airway Management in Head and Neck Surgery

Practice Questions

Surgical Approaches to the Neck

Practice Questions

Neck Dissection Techniques

Practice Questions

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