Head and Neck Surgery Practice Questions

Q: A 25-year-old woman is concerned about a lump on the left side of her neck that has remained the same size for the past year. Physical examination shows a painless, movable, 3-cm nodule beneath the skin of the left lateral neck just above the level of the thyroid cartilage. There are no other remarkable findings. Fine-needle aspiration of the mass is performed. The pathology report notes the presence of cellular debris. Based on the clinical presentation and pathology findings, which of the following terms best describes this nodule?

Branchial cyst. ***Branchial cyst*** - A **branchial cyst** typically presents as a **painless, movable lateral neck mass** in young adults, often just anterior to the sternocleidomastoid muscle at the junction of the upper and middle third of the neck. - The presence of **cellular debris** in the fine-needle aspiration (FNA) is consistent with the benign, fluid-filled nature of a branchial cyst, which contains watery or mucoid material with desquamated epithelial cells. - The **stable size over one year** supports a benign congenital lesion rather than malignancy. *Metastatic thyroid carcinoma* - This would typically present as a **hard, fixed mass**, possibly associated with other symptoms like **hoarseness or dysphagia**. - FNA would show **malignant follicular cells** consistent with thyroid origin, not just cellular debris. - A metastatic lesion would be unlikely to remain stable in size for a year. *Thyroglossal duct cyst* - This is the most common **midline neck mass** in children and young adults, typically located at or near the **midline** between the base of tongue and thyroid gland. - It characteristically **moves with swallowing and tongue protrusion**, unlike branchial cysts. - The **lateral location** in this case makes thyroglossal duct cyst incorrect. *Mucoepidermoid tumor* - This is a **malignant salivary gland tumor** that can occur in the parotid or submandibular regions. - It usually presents as a **firm, progressively growing mass** and would not remain stable at 3 cm for a year. - FNA would show **malignant epithelial and mucous-producing cells**, not just bland cellular debris.

Q: 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?

T4 N2. ***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.

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

It involves both submandibular and sublingual spaces.. ***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.

Q: Le Fort II fracture involves?

Inferior orbital rim. ***Inferior orbital rim*** - A **Le Fort II fracture**, also known as a **pyramidal fracture**, characteristically involves the **inferior orbital rims** bilaterally. - This fracture pattern extends through the **nasal bones**, **maxilla**, **lacrimal bones**, and often the **palate**. *Medial wall of orbit* - While the medial wall of the orbit can be involved in complex midface fractures, it is not the defining characteristic of a **Le Fort II fracture**. - Fractures primarily involving the medial orbital wall are more typical of **orbital blowout fractures** or highly comminuted traumas. *Lateral pyriform rims* - The **pyriform aperture** (nasal cavity opening) is indeed involved in **Le Fort II fractures**, specifically its medial and superior aspects. However, the lateral pyriform rims themselves are not the hallmark feature. - Involvement of the lateral pyriform rims without extension through the inferior orbital rims would suggest a different fracture classification or potentially a more localized trauma. *Mastoid process* - The **mastoid process** is part of the temporal bone and is located in the posterior skull base. - Fractures of the mastoid process are associated with **basilar skull fractures** or direct trauma to the temporal region, and are not part of the standard Le Fort classification for midface fractures.

Q: Which of the following statements about parotid fistula is false?

Treated with Newman and sea Brock's operation. ***Treated with Newman and Sea Brock's operation*** - This statement is **false** because parotid fistulas are typically not treated with Newman and Sea Brock's operation; that procedure is associated with **recurrent parotitis** or **sialadenitis**, not fistulas. - Management of parotid fistulas usually involves conservative measures, **botulinum toxin injections**, or surgical repair, depending on the cause and severity. *Complication of superficial parotidectomy* - **Parotid fistulas** can indeed occur as a complication of **superficial parotidectomy** due to injury to the parotid duct or parenchyma during surgery. - This leads to saliva leaking from the wound or an established cutaneous opening. *IOC is Sialogram* - **Sialography** is often used as an **investigation of choice** or an important diagnostic tool to visualize the ductal system and identify the site of leakage in a parotid fistula. - It helps in delineating the anatomy and extent of the fistula. *Internal fistulas are typically asymptomatic.* - **Internal parotid fistulas**, which drain saliva into the oral cavity, are **typically asymptomatic** because the saliva is naturally swallowed, preventing external leakage or discomfort. - In contrast, external fistulas that drain to the skin surface are highly symptomatic due to visible salivary leakage.

Q: Torrential bleeding during tonsillectomy is due to.

Paratonsillar vein. ***Paratonsillar vein*** - The **paratonsillar vein** (external palatine vein) lies lateral to the **tonsillar capsule** and is the classic cause of **torrential/reactionary hemorrhage** during tonsillectomy. - This vein is particularly vulnerable during dissection and can cause significant **venous bleeding** that requires immediate control during the procedure. *Facial artery* - The **facial artery** is the parent vessel that gives rise to the tonsillar artery but is not directly involved in **intraoperative bleeding** during tonsillectomy. - It lies deeper and more laterally, making direct injury during routine tonsillectomy uncommon compared to the paratonsillar vein. *None of the options* - This option is incorrect as the **paratonsillar vein** is indeed a well-established anatomical cause of torrential bleeding during tonsillectomy. - Proper identification of bleeding sources is crucial for effective **hemostatic control** during the procedure. *Tonsillar artery* - The **tonsillar artery** (branch of facial artery) provides the main **arterial supply** to the tonsils but is more commonly associated with **secondary hemorrhage** post-tonsillectomy. - **Primary/reactionary bleeding** during surgery is characteristically from the **paratonsillar vein**, not the tonsillar artery.

Q: The following statements about thyroglossal cyst are true, except:

Incision and drainage is the treatment of choice. ***Incision and drainage is the treatment of choice*** - **Incision and drainage** is generally not the definitive treatment for a thyroglossal duct cyst due to the high risk of **recurrence**. - The standard surgical approach is the **Sistrunk procedure**, which involves excising the cyst, the mid-portion of the hyoid bone, and the tract up to the foramen cecum. *Frequent cause of anterior midline neck masses in the first decade of life* - **Thyroglossal duct cysts** are indeed the most common congenital neck masses, often presenting in childhood, particularly in the **first decade of life**. - They arise from the embryological remnant of the **thyroglossal duct**, which normally involutes. *The cyst is located within 2 cm of the midline* - **Thyroglossal cysts** are almost always found in the **midline** or slightly off-midline of the neck. - Their location is consistent with the path of the **descending thyroid gland** during embryonic development. *The swelling moves upwards on protrusion of tongue* - This is a classic diagnostic sign for a **thyroglossal duct cyst**. - The cyst is connected to the tongue via the **thyroglossal duct remnant**, so tongue protrusion causes the cyst to elevate.

Q: In Frey's syndrome, aberrant regeneration of the auriculotemporal nerve leads to sweating on the cheeks while eating after parotid gland removal. What is the primary mechanism responsible for this sweating?

Aberrant connection to sweat glands. ***Aberrant connection to sweat glands*** - Following **parotidectomy**, damaged parasympathetic fibers from the auriculotemporal nerve regenerate and mistakenly innervate **sudomotor (sweat) glands** in the skin. - This leads to sweating on the cheek during mastication, as stimuli intended for salivary glands are redirected to sweat glands. *Aberrant connection to lacrimal glands* - This describes **lacrimation (tearing)** during gustatory stimuli, a phenomenon known as Bogorad's syndrome or "crocodile tears," which involves aberrant innervation of lacrimal glands. - It does not explain the **gustatory sweating** seen in Frey's syndrome. *Aberrant connection to nasal mucosa* - Aberrant innervation to the nasal mucosa would primarily cause **rhinorrhea (runny nose)** in response to stimuli, not sweating on the cheek. - This is not a characteristic feature of Frey's syndrome. *Aberrant connection to muscles of facial expression* - Aberrant innervation of facial muscles would result in **involuntary muscle contractions** or tics, not gustatory sweating. - Facial nerve damage and misdirection can lead to synkinesis, but it does not explain the sudomotor symptoms of Frey's syndrome.

Q: Which of the following carcinomas commonly presents with neck nodes?

Epiglottis. ***Epiglottis*** - Carcinomas of the epiglottis, a **supraglottic** structure, often present with neck node metastases due to a rich lymphatic drainage. - The **epiglottis** is considered a "silent area" for early symptoms, allowing tumors to grow and spread to regional lymph nodes before diagnosis. *Cricoid* - The cricoid cartilage is part of the **subglottic larynx**, and carcinomas in this region are rare and typically present later with **airway obstruction** rather than early neck nodes. - Subglottic cancers have a different lymphatic drainage pattern, often involving **paratracheal nodes** rather than the superficial neck nodes. *Glottis* - **Glottic carcinomas** (involving the true vocal cords) typically have an excellent prognosis because they present early with **hoarseness** due to interference with vocal cord vibration. - The glottis has a **sparse lymphatic supply**, meaning that neck node involvement is rare, especially in early stages. *Anterior commissure* - Carcinomas involving the **anterior commissure** are still considered part of the glottic region, and like other glottic cancers, they present with early **hoarseness**. - The lymphatic drainage of the anterior commissure is generally sparse, leading to a **low incidence of early cervical lymph node metastases**.

Q: Which of the following anomalies is most likely to require special consideration in restorative treatment?

Dens in dente. ***Dens in dente*** - This anomaly involves an **invagination of enamel and dentin** into the pulp chamber, creating a deep crevice that is highly susceptible to **caries** and subsequent **pulpal necrosis**. - Its complex internal morphology makes proper **sealing and restoration challenging**, often requiring specialized techniques to prevent recurrent decay or endodontic complications. *Dilaceration* - Dilaceration refers to an **abnormal bend or curve in the root or crown** of a tooth, usually due to trauma during tooth development. - While it can complicate **endodontic treatment or extraction**, it generally does not directly impact the restorative treatment of the crown, unless the crown itself is severely malformed. *Taurodontism* - Taurodontism is characterized by an **enlarged pulp chamber** with short roots, giving the tooth a "bull-like" appearance. - This condition primarily affects the **morphology of the root and pulp**, which typically does not pose a direct challenge to conventional restorative procedures on the crown unless it involves deep caries extending into the pulp. *Enameloma* - An enameloma (or enamel pearl) is a **small nodule of ectopic enamel** found on the root surface, usually near the cementoenamel junction (CEJ). - While they can be associated with localized periodontal problems, they generally **do not affect the restorative treatment** of the tooth's crown and are often amenable to simple removal if necessary.

Question 1

A 25-year-old woman is concerned about a lump on the left side of her neck that has remained the same size for the past year. Physical examination shows a painless, movable, 3-cm nodule beneath the skin of the left lateral neck just above the level of the thyroid cartilage. There are no other remarkable findings. Fine-needle aspiration of the mass is performed. The pathology report notes the presence of cellular debris. Based on the clinical presentation and pathology findings, which of the following terms best describes this nodule?

Accepted Answer

Branchial cyst

Answer

Metastatic thyroid carcinoma

Answer

Thyroglossal duct cyst

Answer

Mucoepidermoid tumor

Question 2

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?

Accepted Answer

T4 N2

Answer

T3 N2

Answer

T3 N3

Answer

T4 N3

Question 3

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

Accepted Answer

It involves both submandibular and sublingual spaces.

Answer

It is usually unilateral.

Answer

It spreads by lymphatics.

Answer

It is primarily a viral infection.

Question 4

Le Fort II fracture involves?

Accepted Answer

Inferior orbital rim

Answer

Medial wall of orbit

Answer

Lateral pyriform rims

Answer

Mastoid process

Question 5

Which of the following statements about parotid fistula is false?

Accepted Answer

Treated with Newman and sea Brock's operation

Answer

IOC is Sialogram

Answer

Complication of superficial parotidectomy

Answer

Internal fistulas are typically asymptomatic.

Question 6

Torrential bleeding during tonsillectomy is due to.

Accepted Answer

Paratonsillar vein

Answer

Facial artery

Answer

None of the options

Answer

Tonsillar artery

Question 7

The following statements about thyroglossal cyst are true, except:

Accepted Answer

Incision and drainage is the treatment of choice

Answer

Frequent cause of anterior midline neck masses in the first decade of life

Answer

The swelling moves upwards on protrusion of tongue

Answer

The cyst is located within 2 cm of the midline

Question 8

In Frey's syndrome, aberrant regeneration of the auriculotemporal nerve leads to sweating on the cheeks while eating after parotid gland removal. What is the primary mechanism responsible for this sweating?

Accepted Answer

Aberrant connection to sweat glands

Answer

Aberrant connection to nasal mucosa

Answer

Aberrant connection to lacrimal glands

Answer

Aberrant connection to muscles of facial expression

Question 9

Which of the following carcinomas commonly presents with neck nodes?

Accepted Answer

Epiglottis

Answer

Cricoid

Answer

Glottis

Answer

Anterior commissure

Question 10

Which of the following anomalies is most likely to require special consideration in restorative treatment?

Accepted Answer

Dens in dente

Answer

Dilaceration

Answer

Taurodontism

Answer

Enameloma

Head and Neck Surgery — MCQs

Head and Neck Surgery — MCQs

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