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32
A. Al-lami et al.
Post-operative considerations for patients undergoing laryngectomy include monitoring for complications such as haemorrhage, infection, pharyngocutane­ous stula, dysphagia, and chyle leak. Regular wound assessment, drain man­agement, and tracheostomy care are essential. Nutritional support through a nasogastric tube or gastrostomy may be necessary until the patient can safely swallow. Speech and swallowing therapy should be initiated to help patients adapt to their new anatomy and regain their ability to communicate and eat. Close follow-up and regular surveillance are crucial for detecting potential recurrences and managing long-term complications. A barium swallow test is used to assess for leaks a few days after the surgical procedure.
5. What different types of laryngectomy incisions?
• Long-apron incision (Gluck-Sorenson U-shaped incision) is the commonest
used [16].
• Extended long-apron incision if neck dissection is planned.
• Short-apron incision with separate stroma (better cosmesis, but limited expo-
sure of lower neck).
• Other incisions are rarely used: as T, horizontal double-Y incision, or trap-
door incision.
6. What are the operative steps to improve the quality of voice rehabilitation?
• Tension-free (and if possible) horizontal closure of the pharynx
• Upper oesophageal myotomy
• Pharyngeal plexus neurectomy
• Primary puncture, if possible, especially if not a salvage laryngectomy
• Division of the sternal heads of sternomastoid leading to a attening of the
lower neck, which aids stomal dressing adhesion and humidity and moisture
exchanger (HME) xation
7. What is the minimum width of pharyngeal remnant that allows for primary
closure?
For successful primary closure of a pharyngeal remnant, preservation of the mucosa of at least one pyriform fossa is required, which typically measures around 1.5cm in a relaxed state and can extend up to 2.5cm when stretched. If the remaining pharyngeal width is less than this, considering a ap reconstruc­tion is advisable to ensure adequate closure and function.
8. What types of pharyngeal mucosal closures are used in laryngectomy: In laryngectomy surgeries, pharyngeal mucosal closures are crucial to ensure
a secure and functional post-operative outcome. Here is an expanded explana­tion of the two primary techniques used for mucosal closures in laryngectomy— the modied Connell and Lambert techniques:
Modied Connell technique:
• Description: This technique involves a continuous, interlocking suture pattern that is primarily used to minimize tension across the suture line. The inter­locking nature of the stitch helps distribute the tension evenly along the length of the closure.
1 Head andNeck
• Advantages: The reduced tension decreases the risk of tearing and wound stress, potentially lowering the chance of post-operative complications like leakage.
• Risks: The major drawback is that if the continuous suture knot fails or breaks, there is a risk of the entire suture line coming undone, leading to wound dehiscence (reopening of the closed wound).
• Application: Intraluminal sutures are placed and are inverted to enhance the healing by placing the knot inside the lumen, thus minimizing exposure to external factors that could interfere with the wound healing. Lambert technique:
• Description: This technique uses interrupted sutures, which means that each stitch is individually knotted.
• Advantages: Interrupted sutures are generally more secure than a continuous suture line because if one suture fails, the rest remain intact, thus localizing any potential dehiscence.
• Disadvantages: The primary disadvantage is that each suture individually bears more tension than in an interlocking continuous suture. This increased tension can lead to greater stress at each suture point, which might compro­mise the wound integrity or delay healing.
• Application: The stitches are placed extra-mucosally and are also inverted. By placing the stitches outside the mucosal layer, there is less disturbance to the mucosa itself, potentially promoting better healing while the inverted stitches help in creating a smoother internal surface and reducing the risk of granula­tion tissue formation.
9. What is a narrow-eld laryngectomy? A narrow-eld laryngectomy is a surgical approach designed as a less inva-
sive alternative to a total laryngectomy. It is particularly utilized for patients suffering from intractable aspiration, where other less invasive measures have failed to improve their condition.
The key features of this procedure:
• Muscle preservation: Unlike in a total laryngectomy, the narrow-eld laryn­gectomy aims to spare the strap muscles, which are important for neck struc­ture and function. Preserving these muscles helps in reducing post-operative morbidity and aids in a quicker recovery.
• High tracheal transection: This technique involves transecting the trachea at a higher level than in a standard laryngectomy. This strategic cut minimizes the amount of tracheal tissue removed and aims to maintain better structural and functional integrity in the neck.
• Conservation of pharyngeal mucosa: A critical aspect of this procedure is preserving as much pharyngeal mucosa as possible. This is essential for maintaining swallowing function post-surgery. In some cases, even the mucosa covering the epiglottis may be preserved to reduce the pharyngeal opening further, which helps in managing aspiration by limiting the entry of food or liquid into the lower respiratory tract.
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34
A. Al-lami et al.
• Reduced pharyngeal opening: By creating a smaller pharyngeal opening, the procedure reduces the risk of aspiration, which is the primary goal in patients for whom the surgery is indicated.
1.7 Excision ofBranchial Cleft Cysts
Indications for Surgery [17]
• Branchial cleft cyst causing symptoms or infection
• Cosmetic concerns
• Aspiration or biopsy indicating potential malignancy
• Recurrent infections
Specific Risks Involved with the Surgery
• Haemorrhage
• Infection
• Recurrence of the cyst
• Injury to adjacent structures, such as nerves (marginal mandibular nerve, hypo­glossal and spinal accessory nerve), vessels (internal jugular vein), and parotid gland
• Scarring
Steps of the Surgery
1. Administer general anaesthesia, and perform endotracheal intubation.
2. Position the patient supine, with the head turned away stabilized in a head ring
from the side to be operated on and the neck extended with a shoulder roll.
3. Identify the location of the branchial cleft cyst and its relationship to surround-
ing structures.
4. Consider injecting local anaesthetic such as Lignospan (1:80,000 adrenaline) or
1:100,000 adrenaline for haemostasis.
5. Make an elliptical skin incision around the cyst, incorporating the previous
drainage site (if applicable).
6. Dissect the cyst meticulously from the surrounding tissues, staying close to the
cyst, preserving vital structures such as nerves and vessels.
7. Trace the tract of the cyst, if present, and excise it in its entirety.
8. Remove the cyst en bloc, ensuring that the entire cyst wall is excised to mini-
mize the risk of recurrence.
9. Achieve meticulous haemostasis to prevent post-operative haematoma
formation.
10. Place a drain if necessary
1 Head andNeck
35
11. Close the wound in layers using absorbable sutures for deep tissue and non-
absorbable sutures or staples for the skin.
12. Apply a sterile dressing.
Important Points to Note During the Surgery
• Careful dissection close to the cyst and preservation of vital structures are crucial to avoid complications.
• Complete excision of the cyst and its tract is essential to minimize the risk of recurrence.
• Meticulous haemostasis is important to prevent post-operative haematoma formation.
• A good understanding of the anatomical course is seen in Fig.1.13.
Questions a Consultant Might Ask a Trainee During the Operation
1. Can you describe the embryological origin and classication of branchial
cleft anomalies?
Branchial cleft anomalies arise from incomplete obliteration of the branchial clefts and pouches during embryologic development. They can be classied into four types based on their origin: rst branchial cleft cysts (type I and type II), second branchial cleft cysts, third branchial cleft cysts, and fourth branchial cleft cysts. First branchial cleft cysts are the most common, accounting for 90% of cases [17].
2. What are the potential differential diagnoses for a neck mass in this loca-
tion, and how can they be differentiated preoperatively?
Potential differential diagnoses for a neck mass in the location of a branchial cleft cyst include lymphadenopathy, lipoma, sebaceous cyst, dermoid cyst, thy­roglossal duct cyst, and metastatic lymph nodes. A thorough history, physical examination, and imaging studies, such as ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), or positron emission tomography (PET)/CT, can help differentiate these entities preoperatively. Fine-needle aspi­ration (FNA) biopsy may also be used for further evaluation.
3. What imaging studies are helpful in evaluating a suspected branchial cleft cyst? Imaging studies helpful in evaluating a suspected branchial cleft cyst include
ultrasound, CT, and MRI.Ultrasound can be useful for assessing the cyst’s size, location, and relationship to adjacent structures. CT, MRI, and PET/CT provide more detailed information about the cyst and its tract, as well as the relationship to surrounding tissues, and can help differentiate a branchial cleft cyst from other neck masses depending on its FDG avidity.
4. How do you manage a branchial cleft cyst that has become infected prior to
surgery?
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A. Al-lami et al.
Fig. 1.13 Branchial cleft cysts shown in relation to other structures in the neck (rst, second, and third cleft cysts). Illustrated by Vikum Liyanaarachchi
If a branchial cleft cyst has become infected prior to surgery, initial manage-
ment should focus on controlling the infection. This may involve antibiotic ther­apy, incision, and drainage if an abscess has formed, and close monitoring for complications. Once the infection has been adequately controlled, denitive sur­gical excision can be planned.
5. What is the anatomical/operative course of the second branchial cleft tract? The anatomical and operative course of the second branchial cleft tract is a
key consideration in the diagnosis and surgical management of related congeni­tal anomalies. These anomalies typically follow a well-dened path, which reects their embryonic origin from the second branchial cleft.
• External opening: The external opening of the tract is typically located along the anterior border of the neck. It often appears along the carotid sheath, situ-
1 Head andNeck
37
ated between the external and internal carotid arteries. This supercial loca­tion makes it visible and palpable upon clinical examination.
• Course relative to cranial nerves: The tract courses supercially relative to cranial nerve XII (the hypoglossal nerve) and cranial nerve IX (the glosso­pharyngeal nerve). This relationship is crucial for surgical planning to avoid nerve damage. The tract’s proximity to these nerves demands careful dissec­tion and monitoring during surgical intervention.
• Internal opening: The internal opening of the tract can be found at the level of the middle constrictor muscle of the pharynx or within the tonsillar fossa. This ending point reects the deep penetration of the tract, which can have implications for the spread of infection and the complexity of surgical management.
6. What are the anatomical variations of branchial cleft cyst? Bailey Classication of Branchial Cleft Cysts [18]:
• Type I: Located deep to the platysma and anterior to the sternocleidomastoid (SCM) muscle. It is the second most common type of branchial cleft cyst and typically presents as a mass that does not move with swallowing or protrusion of the tongue.
• Type II: Characterized by its proximity to the internal carotid artery and its adherence to the internal jugular vein. This is the most common type and poses a signicant risk during surgical removal due to its close relationship with major vascular structures.
• Type III: Extends between the internal and external carotid arteries, which can complicate surgical access and requires careful planning to avoid vascu­lar injury.
• Type IV: Abuts the pharyngeal wall and may extend superiorly to the skull base. This type can be particularly challenging to manage due to its potential involvement with critical deep structures of the neck and skull base.
7. What is the investigation of choice in third or fourth branchial cleft anomalies? The investigation of choice for third or fourth branchial cleft anomalies is
typically a barium swallow. This imaging study helps in delineating the presence of any stulous tract or cyst that communicates with the pharyngeal or oesopha­geal lumen, thus aiding in diagnosis and surgical planning.
8. What is the management of third and fourth branchial cleft anomalies? Surgical excision: Complete surgical excision of the cyst or stula is neces-
sary to prevent recurrence. For third and fourth branchial cleft anomalies, this typically includes an ipsilateral partial thyroidectomy, as these anomalies often have tracts that pass close to or through thyroid tissue. This approach ensures that any potential thyroid involvement is addressed.
Endoscopic approaches: For less invasive management or when surgical risks
are considered high, endoscopic obliteration may be employed. This technique involves the use of diathermy to cauterize the tract and the application of tissue glue to seal the piriform opening. This method can be an effective alternative, particularly for small stulas or for patients with signicant comorbidities.
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A. Al-lami et al.
1.8 Thyroglossal Duct Cyst Excision (Modified
Sistrunk Procedure)
Indications for Surgery [19]
• Recurrent or persistent thyroglossal duct cyst
• History of duct infection or abscess formation
• Mass effect
• Suspicion of malignancy (potential risk of <1% transformation into papillary
thyroid cancer)
• Cosmetic concerns
Specific Risks Involved with the Surgery [19]
• Haemorrhage
• Infection
• Recurrence of the cyst
• Injury to the adjacent structures (e.g. hypoglossal nerve, blood vessels)
• Hypothyroidism (if a signicant portion of the thyroid gland is removed)
Steps of the Surgery
1. Administer general anaesthesia, and perform endotracheal intubation.
2. Position the patient supine, with the head supported on a head ring with the
neck extended using a shoulder roll.
3. Identify the location of the thyroglossal duct cyst and its relationship to the
hyoid bone and thyroid gland.
4. Consider injecting local anaesthetic such as Lignospan (1:80,000 adrenaline) or
1:100,000 adrenaline for haemostasis.
5. Make a horizontal skin incision over the cyst, ideally in a skin crease.
6. Dissect subplatysmal aps to expose the cyst and the surrounding tissues.
7. Identify and preserve the infrahyoid muscles.
8. Excise the cyst along with a core of tissue surrounding the thyroglossal duct
tract, extending from the cyst to the foramen cecum at the base of the tongue.
9. Remove the central portion of the hyoid bone (Sistrunk procedure) to ensure
complete removal of the tract as seen in Fig.1.14.
10. Ensure meticulous haemostasis to prevent post-operative haematoma formation.
11. Place a drain if necessary.
12. Close the wound in layers using absorbable sutures for deep tissue and non-
absorbable sutures or staples for the skin.
13. Apply a sterile dressing.
1 Head andNeck
Fig. 1.14 Thyroglossal duct cyst excised with the medial portion of hyoid bone. Illustrated by Vikum Liyanaarachchi
39
Important Points to Note During the Surgery
• Careful dissection and preservation of vital structures are crucial to avoid
complications.
• Complete excision of the cyst and its tract, including the central portion of the
hyoid bone, is essential to minimize the risk of recurrence.
• Meticulous haemostasis is important to prevent post-operative haematoma
formation.
Questions a Consultant Might Ask a Trainee During the Operation
1. Can you describe the embryological origin of the thyroglossal duct cyst? The thyroglossal duct cyst is a congenital anomaly that results from the
incomplete obliteration of the thyroglossal duct during embryonic development [19]. The thyroglossal duct is a temporary structure that forms during the descent of the thyroid gland from the foramen caecum at the base of the tongue to its nal position in the neck. If the duct fails to involute completely, remnants can persist and form a cyst.
2. What are the potential differential diagnoses for a midline neck mass, and
how can they be differentiated preoperatively?
Potential differential diagnoses for a midline neck mass include dermoid cyst,
lipoma, lymphadenopathy, sebaceous cyst, and enlarged thyroid nodule. A thor­ough history, physical examination, and imaging studies, such as ultrasound, computed tomography (CT), or magnetic resonance imaging (MRI), can help
40
A. Al-lami et al.
differentiate these entities preoperatively. Fine-needle aspiration (FNA) biopsy may also be used for further evaluation.
3. What imaging studies are helpful in evaluating a suspected thyroglossal
duct cyst?
Imaging studies are helpful in evaluating a suspected thyroglossal duct cyst
including ultrasound, CT, and MRI [19]. Ultrasound can provide information about the cyst’s size, location, and relationship to adjacent structures. At least an ultrasound is needed to ensure that separate thyroid tissue is present to minimize the risk of hypothyroidism. CT and MRI provide more detailed information about the cyst and its tract and can help differentiate a thyroglossal duct cyst from other neck masses.
4. How do you manage a thyroglossal duct cyst that has become infected prior
to surgery?
If a thyroglossal duct cyst has become infected prior to surgery, initial man-
agement should focus on controlling the infection. This may involve antibiotic therapy, aspiration or incision, and drainage if an abscess has formed, and close monitoring for complications. Incision and drainage would ideally be avoided if possible as it would make the denitive excision surgery more challenging increasing the risk of recurrence. Once the infection has been adequately con­trolled, denitive surgical excision can be planned.
5. What steps would you take if a pharyngeal or airway tear occurs during
surgery?
• Preventive measures: Employ meticulous dissection techniques, especially on the deep aspect of the cyst, to minimize the risk of tears.
• Primary closure: Attempt to close the tear primarily if the size and loca­tion permit.
• Reinforcement: Use an overlying layer of strap muscle or a pedicled local ap such as one from the sternocleidomastoid (SCM) for additional reinforcement.
• Tissue glue: Consider the application of tissue glue, such as Tisseel, to aid in sealing and healing the injury.
• Drainage: Insert a non-suction corrugated drain to prevent uid accumulation.
• Post-operative care: Place a nasogastric (NG) tube, and perform a water­soluble swallow test post-operatively to assess for any ongoing issues or leaks if a pharyngeal injury is involved.
6. Why is ultrasound important prior to thyroglossal duct cyst (TGDC) surgery? Diagnostic conrmation: It helps conrm the diagnosis of TGDC and differ-
entiates the cyst from other neck masses.
Thyroid gland assessment: Ultrasound ensures that the thyroid gland is in situ
and functioning. This is vital because if the TGDC is the only functioning thy­roid tissue, removing it would necessitate lifelong thyroxine replacement. Patients must be informed about this potential outcome to make an informed decision about surgery.
7. What are the anatomical variations of thyroglossal duct cysts (TGDCs)?
1 Head andNeck
41
TGDCs can vary inlocation relative to the hyoid bone:
• Infrahyoid: Present in 25–65% of cases, these are located below the hyoid bone.
• Suprahyoid: Found in 20–25% of cases, these cysts are located above the hyoid bone.
• At hyoid level: Approximately 15–20% of TGDCs are at the level of the hyoid bone itself.
8. How can injury to the hypoglossal nerve be avoided during a Sistrunk procedure? Meticulous dissection: Carefully dissect only the central portion of the hyoid
bone. Avoid extending the dissection too far laterally beyond the lesser cornua of the hyoid bone, as this increases the risk of damaging the hypoglossal nerve. As the nerve courses down the neck, it passes close to the hyoid bone but typically lies superior and medial to it.

1.9 Lymph Node Biopsy

Indications for Surgery [20]
• Evaluation of unexplained lymphadenopathy
• Diagnosis of metastatic cancer or lymphoma
• Assessment of infectious or inammatory conditions affecting the lymph nodes
Specific Risks Involved with the Surgery [20]
• Haemorrhage
• Infection
• Injury to adjacent structures (e.g. nerves, blood vessels)
• Seroma formation
• Scarring
• Chyle leak if low supraclavicular/level V lymphadenopathy
Steps of the Surgery
1. Administer local anaesthesia with or without sedation, or general anaesthesia,
depending on the patient and the location of the lymph node.
2. Position the patient with a head ring and shoulder roll appropriately, depending
on the location of the lymph node to be biopsied.
3. Consider injecting local anaesthetic such as Lignospan (1:80,000 adrenaline) or
1:100,000 adrenaline for haemostasis.
4. Identify the location of the target lymph node using palpation, ultrasound guid-
ance, or preoperative imaging.
5. Make a small skin incision over the lymph node.