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of omohyoid muscle
Thyroid gland
Cricothyroid
nerve (proximal stump)
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Fig. 6.17 The ansa cervicalis
is found between the jugular
vein and the omohyoid
muscle (on the superior
belly). The ansa cervicalis is
cut just superior to the
omohyoid branch
D. Costello et al.
Hyoid bone
Jugular vein
Superior belly
ANSA hypoglossi
Cricothyroid
muscle
Fig. 6.18 Recurrent
laryngeal nerve exposed in
the tracheo-oesophageal
groove and anastomosed to
the ansa cervicalis
Thyroid
cartilage
muscle
Inferior belly
of omohyoid muscle
ANSA cervicalis
Site of
anastomosis
Recurrent laryngeal

6 Surgery forVocal Fold Immobility
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81
divided. Using a microscope, the stump of the ansa cervicalis
is anastomosed to the distal stump of the RLN, using one or
two microsutures 9-0 and brin glue (Fig. 6.18). A small
drain is placed, and nal haemostasis is performed. The
wound is closed in two or three layers.
6.2.3.3 Postoperative Care
During the rst week, movement of the head should be limited. The drain can be removed 1day after surgery.
No dietary limitations are required, but soft food may be
preferred. In cases of aspiration, swallowing must be
performed with the head turned towards the side of the operation. Swallowing usually improves within 2weeks.
The patient should be informed that the voice will rst be
worse before it gets better. Improvement of the voice will
take at least 6–9months, and it will gradually improve within
2years.
References
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Tolley NS.Vocal palsy increases the risk of lower respiratory tract
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3. Green DC, Berke GS, Ward PH.Vocal fold medialization by surgical augmentation versus arytenoid adduction in the in-vivo canine
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KC. Outcomes of medialization laryngoplasty with and without
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of injection laryngoplasty for vocal fold paralysis in an attempt to
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6. Friedman AD, Burns JA, Heaton JT, Zeitels SM. Early versus
late injection medialization for unilateral vocal cord paralysis.
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7. Vila PM, Bhatt NK, Paniello RC.Early-injection laryngoplasty may
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8. Snyder SK, Angelos P, Carty SE, Doherty GM, Howe JR, Lee
JA, etal. Injection of bulking agents for laryngoplasty. Surgery.
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9. Isshiki N, Okamura H, Ishikawa T.Thyroplasty type I (lateral compression) for dysphonia due to vocal cord paralysis or atrophy. Acta
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10. Isshiki N, Morita H, Okamura H, Hiramoto M.Thyroplasty as a new
phonosurgical technique. Acta Otolaryngol. 1974;78(5–6):451–7.
11. Hess MM, Fleischer S.Laryngeal framework surgery: current strategies. Curr Opin Otolaryngol Head Neck Surg. 2016;24(6):505–9.
12. Siu J, Tam S, Fung K. A comparison of outcomes in interventions for unilateral vocal fold paralysis: a systematic review.
Laryngoscope. 2016;126(7):1616–24.
13. Desuter G, Zapater E, Van der Vorst S, Henrard S, van Lith-Bijl JT,
van Benthem PP, Sjögren EV.Very long-term voice handicap index
voice outcomes after Montgomery Thyroplasty: a cross-sectional
study. Clin Otolaryngol. 2018;43:1097. https://doi.org/10.1111/
coa.13113. [Epub ahead of print].
14. Ryu IS, Nam SY, Han MW, Choi SH, Kim SY, Roh JL.Long-term
voice outcomes after thyroplasty for unilateral vocal fold paralysis.
Arch Otolaryngol Head Neck Surg. 2012;138(4):347–51.
15. Dastolfo C, Gartner-Schmidt J, Yu L, Carnes O, Gillespie
AI.Aerodynamic outcomes of four common voice disorders: moving toward disorder-specic assessment. J Voice. 2016;30:301–7.
16. Gibbins N. The evolution of laryngeal reinnervation, the current state of science and thoughts for future treatments. J Voice.
2014;28:793–8.
17. Benninger MS, Chota RL, Bryson PC, Drake RL.Custom implants
for medialization laryngoplasty: a model that considers tissue compression. J Voice. 2015;29:363–9.
18. Netterville JL, Fortune S, Stanziale S, Billante CR.Palatal adhesion: the treatment of unilateral palatal paralysis after high vagus
nerve injury. Head Neck. 2002;24:721–30.
19. Montgomery WW, Blaugrund SM, Varvares MA. Thyroplasty: a
new approach. Ann Otol Rhinol Laryngol. 1993;102:571–9.
20. Zeitels SM, Mauri M, Dailey SH. Medialization laryngoplasty
with Gore-Tex for voice restoration secondary to glottal incompetence: indications and observations. Ann Otol Rhinol Laryngol.
2003;112:180–4.
21. Schneider B, Denk DM, Bigenzahn W. Functional results after
external vocal fold medialization thyroplasty with the titanium
vocal fold medialization implant. Laryngoscope. 2003;113:628–34.
22. Cummings CW, Purcell LL, Flint PW. Hydroxylapatite laryngeal
implants for medialization. Preliminary report. Ann Otol Rhinol
Laryngol. 1993;102:843–51.
23. Benninger MS, Manzoor N, Ruda JM. Short- and long-term outcomes after silastic medicalization laryngoplasty: are arytenoid
procedures needed? J Voice. 2015;29:236–40.
24. Desuter G, Henrard S, Van Lith-Bijl JT, Amory A, Duprez T, van
Benthem PP, Sjögren E. Shape of thyroid cartilage inuences outcome of Montgomery medialization thyroplasty: a gender issue. J
Voice. 2017;31:245.e3–8.
25. Desuter G, Cartiaux O, Pierard J, Henrard S, van Lith-Bijl J, van
Benthem PP, Sjögren E. Accuracy of thyroid cartilage fenestration during Montgomery medialization thyroplasty. J Voice.
2019;34:609. https://doi.org/10.1016/j.jvoice.2019.01.005. [Epub
ahead of print].
26. Lekue A, García-López I, Santiago S, Del Palacio A, Gavilán
J. Diagnosis and management with botulinum toxin in 11
cases of laryngeal synkinesis. Eur Arch Otorhinolaryngol.
2015;272:2397–402.
27. van Lith-Bijl JT, Mahieu HF, Stolk RJ, Tonnaer JA, Groenhout C,
Konings PN. Laryngeal abductor function after recurrent laryngeal nerve injury in cats. Arch Otolaryngol Head Neck Surg.
1996;122:393–6.
28. Lin RJ, Smith LJ, Munin MC, Sridharan S, Rosen CA.Innervation
status in chronic vocal fold paralysis and implications for laryngeal
reinnervation. Laryngoscope. 2018;128:1628–33.
29. Smith ME, Houtz DR.Outcomes of laryngeal reinnervation for unilateral vocal fold paralysis in children: associations with age and
time since injury. Ann Otol Rhinol Laryngol. 2016;125:433–8.
30. Zur KB, Carroll LM. Recurrent laryngeal nerve reinnervation in
children: acoustic and endoscopic characteristics pre- intervention
and post-intervention. A comparison of treatment options.
Laryngoscope. 2015;125:S1–S15.
31. Marcum KK, Wright SC Jr, Kemp ES, Kitse DJ.A novel modication of the ansa to recurrent laryngeal nerve reinnervation
procedure for young children. Int J Pediatr Otorhinolaryngol.
2010;74:1335–7.
32. Crumley RL.Update: ansa cervicalis to recurrent laryngeal nerve
anastomosis for unilateral laryngeal paralysis. Laryngoscope.
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33. van den Boer C, Wiersma AL, Marie JP, van Lith-Bijl JT.Treatment
of unilateral vocal fold paralysis with ansa cervicalis to recurrent
nerve anastomosis in a young adolescent: European case report. J
Laryngol Otol. 2018;132:661–4.
34. Goding GS Jr. Nerve-muscle pedicle reinnervation of the paralyzed
vocal cord. Otolaryngol Clin North Am. 1991;24:1239–52.
35. Hogikyan ND, Johns MM, Kileny PR, Urbanchek M, Carroll
WR, Kuzon WM Jr. Motion-specic laryngeal reinnervation using
muscle-nerve-muscle neurotization. Ann Otol Rhinol Laryngol.
2001;110:801–10.
36. Debnath I, Rich JT, Paniello RC.Intrinsic laryngeal muscle reinnervation using the muscle-nerve-muscle technique. Ann Otol Rhinol
Laryngol. 2008;117:382–8.
37. Mendelsohn AH, Berke GS.Surgery or botulinum toxin for adductor spasmodic dysphonia: a comparative study. Ann Otol Rhinol
Laryngol. 2012;121:231–8.
38. DeConde AS, Long JL, Armin BB, Berke GS. Functional reinnervation of vocal folds after selective laryngeal adductor
denervation- reinnervation surgery for spasmodic dysphonia. J
Voice. 2012;26:602–3.

Part III
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Benign and Diagnostic Neck Surgery

Incision andDrainage ofDeep Neck
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Space Infections
FrancisVaz, AleixRovira-Casa, andAndrewDias
7
7.1 Introduction
The incidence of deep neck space infections (DNSIs) has
decreased since the discovery of antibiotics [1] and the
improvement of dental hygiene. DNSI poses considerable
challenges in diagnosis and treatment, and may potentially
lead to life-threatening complications such as descending
necrotizing mediastinitis, septic shock, pleural and pericardial effusion, cavernous sinus and internal jugular vein
thrombosis, or carotid artery erosion [2]. DNSIs are categorized depending on the neck space involved. Those most frequently involved are the retropharyngeal, peritonsillar,
masseteric, pterygopalatine, maxillary, parapharyngeal, submandibular, and parotid, and abscesses of the oor of the
mouth [3]. The management of DNSI includes control of the
airway, effective antibiotic therapy, and surgical intervention
when indicated. When a signicant deep neck space abscess
is diagnosed, incision and drainage (I+D) should be considered on an urgent basis in adults [4]. A different scenario is
described for children, as conservative management may be
effective for selected patients [5], but every case should be
managed on its own clinical merits. The goals of surgery are
to stop the progression of the infection, obtain a sample for
microbiology and sensitivity, and create a drainage
pathway.
7.2 Epidemiology
Before the antibiotic era, infections of the tonsillar and peritonsillar space were the most common cause of DNSI [1],
but recent literature agrees that odontogenic infections are
now the most common source of DNSI [6–9]. The incidence
of DNSI has increased over the past few years [10]. It has
been proposed that this phenomenon may be a consequence
of reductions in the number of tonsillectomies and in antibiotic prescribing [11]. Paediatric DNSIs are more commonly
attributed to lymphadenitis, presumably because of the low
incidence of dental infection and the predominance of retropharyngeal abscess [12, 13]. DNSIs have been reported to be
more frequent in adult men than in women [14–16], but no
sex predilection has been proven among paediatric patients,
possibly because of a lack of published data [10].
Risk factors for developing DNSI have been reported.
Diabetes mellitus has been shown to have a 1.96 risk ratio for
involvement of multiple deep neck spaces [17].
Immunosuppression from other sources, such as HIV infection, chemotherapy, chronic renal failure, hepatic disease,
and chronic steroid therapy for autoimmune disease, also
places a patient at increased risk for more severe and atypical
infections [18].
Cultures of aspirates from deep neck abscesses are commonly polymicrobial and reect the oropharyngeal ora and
the odontogenic nature of these infections.
F. Vaz (*)
University College London Hospital (UCLH), London, UK
A. Rovira-Casa
ENT Department, Guy’s and St Thomas’ NHS Foundation Trust,
London, UK
e-mail: aleix.rovira@nhs.net
A. Dias
South Inrmary Victoria University Hospital, Cork, Ireland
© Springer Nature Switzerland AG 2024
R. Simo et al. (eds.), Atlas of Head and Neck Surgery, Springer Surgery Atlas Series,
https://doi.org/10.1007/978-3-031-36593-5_7
7.3 Clinical Investigation
DNSIs are a challenging problem, because the complex anatomy of the head and neck area makes them difcult to diagnose, easily spread to other structures, and potentially able to
affect many cervical neurovascular and visceral structures.
Clinical suspicion remains crucial for the important early
diagnosis of this entity. Diagnosis of DNSI among children
is even more challenging, as the presentation can be more
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subtle and the clinical examination can be more difcult
[10]. Comprehensive history taking and clinical evaluation
are keystones in the diagnosis of DNSI in both adults and
children.
Initial laboratory work should include a complete blood
count with differential, serum glucose, and electrolytes;
coagulation studies; HIV screening in adults; blood cultures;
and appropriate cultures of aspirates obtained before antibiotics are instituted, if possible [18]. Cross-section imaging is
crucial for characterizing the nature of a deep neck lesion,
identifying the spaces involved, planning surgical drainage,
evaluating the risk of airway obstruction, and aiding in the
early recognition of complications. Ultrasound imaging is a
useful tool to differentiate inammation from collection, and
also can be used for guidance of percutaneous drainage.
Table 7.1 Neck spaces and infections
Space Limits Contents
Masticator/
temporal space
Parapharyngeal
space
Submandibular
and sublingual
space
• Lateral: Fascia over
masseter muscle
• Medial: Fascia over
pterygoid muscles
Inverted pyramid:
• Superior Base: Skull
base (middle cranial
fossa)
• Inferior Apex:
Greater cornu of the
hyoid bone
• Lateral: Medial
pterygoid muscle,
deep parotid, and
mandible
• Medial: Superior
constrictor and
pharyngobasilar
fascia
• Anterior:
Pterygomandibular
raphe
• Posterior:
Prevertebral fascia
• Superior: Floor of
mouth mucosa
• Inferior: Digastric
• Posterior:
Stylomandibular
ligament and
posterior belly of the
digastric [27]
Partially divided by the
mylohyoid muscle to
create the sublingual
space (above) and the
submandibular space
(underneath)
Mandible, mastication
muscles (masseter,
medial pterygoid, lateral
pterygoid, and
temporalis), third
division of the
trigeminal nerve (V3),
internal maxillary artery,
and buccal fat pad
The styloid process
divides this space:
• Prestyloid
compartment: Styloid
muscles, fat, lymph
nodes, internal
maxillary artery,
inferior alveolar,
auriculotemporal, and
lingual nerves, and the
deep lobe of the
parotid
• Poststyloid
compartment: Carotid
artery, internal jugular
vein, sympathetic
chain, and cranial
nerves IX, X, XI, and
XII [21]
Sublingual and
submandibular glands;
hypoglossal, marginal
and lingual nerves;
Warton’s duct; and facial
vessels
7.4 Airway Management
The rst action when dealing with a patient with suspected
DNSI is to evaluate and secure the airway. Spaces that present
more potential risk of airway impairment include the sublingual, parapharyngeal, and retropharyngeal spaces (see
Table7.1 below). Upper airway bre-optic evaluation should
be done during the rst clinical examination. If the patient is
clinically short of breath or the examination shows airway
obstruction, medical treatment should be administered.
Oxygen, intravenous steroids, and epinephrine nebulizers
should be the rst line of treatment. When surgical drainage is
to be performed in a patient with airway obstruction, an expert
anaesthetist is required, and an operating surgeon must be
available to perform a surgical tracheostomy when necessary.
General considerations/
sources of infection Symptoms Surgical approach
Odontogenic infections are
the commonest source of
infection [19]
Related to multiple neck
spaces, so pharyngitis,
tonsillitis, parotitis, and
cervical lymphadenitis are
common sources of
infection (as well as
odontogenic infections
through indirect spread
from other DNSI) [22]
Conservative treatment with
antibiotics could be
indicated [23, 24]
Due to its relation with the
teeth, odontogenic origin is
the most frequent source of
infection. The mylohyoid
muscle attachment becomes
more superior as it runs
posteriorly along the
internal surface of the
mandible, making the
second and third molars the
most common origin of
infection
Trismus, sore
throat, dysphagia,
pain around the
mandible, and
preauricular area
[20]
Prestyloid: Trismus
(affects the
masticator muscles)
and medial
displacement of the
tonsil
Poststyloid:
Different symptoms
according to the
structures involved,
such as Lemierre’s
syndrome, Horner’s
syndrome, or other
cranial nerve palsies
Because of the
location of this
space, when the
infection occurs
bilaterally
(Ludwig’s angina),
the airway is
compromised (a
potential lifethreatening
condition [28])
Medial to
mandible: Intraoral
Lateral to
mandible: External
approach
When the
prestyloid
compartment is
affected, transoral
approach has also
been proven to be a
valid option as an
alternative to a
transcervical
approach [25, 26]
Intraoral or
external approach

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Table 7.1 (continued)
Space Limits Contents
Peritonsillar
space
Visceral space
Carotid sheath Conuence of each
Retropharyngeal
space
Danger space
Prevertebral
space
Between tonsil capsule
and the superior
constrictor muscle
• Superior: Hyoid
bone
• Inferior: T4
• Anterior: Supercial
layer of deep cervical
fascia
• Posterior:
Prevertebral fascia
• Lateral:
Parapharyngeal space
and carotid sheath
layer of the deep
cervical fascia
(Lincoln’s Highway)
from skull base to
thorax
• Superior: Skull base
• Inferior: T4 (carina)
• Anterior: Pharynx/
oesophagus
• Posterior: Alar fascia
• Lateral: Carotid
sheaths
• Superior: Skull base
• Inferior: Diaphragm
• Anterior: Alar fascia
• Posterior:
Prevertebral fascia
• Superior: Skull base
• Inferior: Diaphragm
• Anterior:
Prevertebral fascia
• Posterior: Vertebral
bodies
Loose connective tissue
and branches from
lingual, facial, and
ascending pharyngeal
vessels
Trachea, oesophagus,
larynx, pharynx, and
thyroid gland
• Common carotid
artery
• Internal jugular vein
• Vagus nerve
Retropharyngeal lymph
nodes and connective
tissue
Loose areolar tissue Possibility of easy spread of
• Dense areolar tissue
• Prevertebral muscles
• Vertebral vessels
• Brachial plexus
• Phrenic nerve
General considerations/
sources of infection Symptoms Surgical approach
Although not a deep
cervical space, the infection
can easily pass through the
superior constrictor muscle
to the prestyloid
parapharyngeal space,
making it a potential source
of deep cervical infection
Uncommonly affected by
DNSI; iatrogenic origin of
infection has been
described [29]
Caudal extension to the
superior mediastinum,
potential source of
mediastinitis [30]
Infections arise from direct
inoculation or extension
from the surrounding
spaces [31]
Infections spread from the
parapharyngeal space [32],
or through lymphatic
spread from nasal cavity or
nasopharynx, (children)
In adults, the most typical
aetiology is trauma to the
posterior pharynx resulting
in retropharyngeal infection
and eventual abscess
formation [33, 34]
Because of the location of
this space and because it is
not a common pathology,
diagnosis can be delayed
the infection to the
mediastinum, because its
lower limit is at the level of
the diaphragm. Infection in
this space arises from the
retropharyngeal space [29]
Main pathway is by
infection of the vertebral
bodies and penetrating
injuries. Tuberculosis may
affect this space, creating
the Pott’s abscess [37]
Children: Neck
pain, neck swelling,
fever, irritability,
dysphagia,
excessive drooling,
and dyspnoea or
noisy breathing
suggestive of upper
airway compromise
[35, 36]
Adults: Neck pain,
fever, anorexia,
nasal obstruction,
snoring, dyspnoea
[29]
Intraoral
External approach
External approach
Collection smaller
than 2cm
conservative
management
Airway
compromise or no
improvement after
24–48h of medical
treatment: surgical
drainage [33]
Intraoral approach
is the gold standard
if the infection is
contained medial to
the great vessels
[37]
2
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7.5 Anatomy
7.5.1 Fascial Layers
The term fascia refers to a sheet or any other dissectible
aggregations of connective tissue that forms beneath the skin
to attach, enclose, and separate muscles and other internal
organs [28]. Our necks are divided into spaces (Fig.7.1), and
therefore, a comprehensive knowledge of the neck fascial
framework is essential to plan surgical treatment and anticipate potential complications. The multiple layers of cervical
fascia create the spaces through which DNSI arise and spread.
The supercial fascia of the neck is a layer of brofatty
tissue connecting the overlying skin to the deeper fascial layers enveloping the platysma and the facial expression muscles [38]. Supercial space infections usually take the form
of cellulitis. When an abscess arises in this space, I+D along
Langer’s lines with appropriate antibiotic therapy is the treatment of choice.
The deep cervical fascia is divided into three layers. The
supercial layer of deep cervical fascia (or investing fascia)
originates from the posterior spinous processes of the vertebrae, nuchal line, and the mastoid process surrounding the
neck to its anterior insertions into the sternum, hyoid, mandible, and zygomatic arches. On its way from posterior to
anterior, it envelops muscles (trapezius, sternocleidomastoid,
anterior belly of the digastric, and masticatory muscles), two
salivary glands (submandibular and parotid), and two fascial
compartments (parotid and masticator spaces). This layer
also forms the stylomandibular ligament, which separates
the parotid from the submandibular gland [27]. This layer of
fascia, medial and deep to the sternocleidomastoid muscle,
contributes to the lateral aspect of the carotid sheath [30]. It
has been reported that this layer is not present between the
posterior edge of the sternocleidomastoid and the anterior
surface of the trapezius [39].
The middle layer of deep cervical fascia (or visceral fas-
cia) is divided into muscular and visceral divisions and
encloses the anterior contents of the neck [30]. The muscular
division surrounds the infrahyoid strap muscles (sternohyoid, sternothyroid, thyrohyoid, omohyoid). The visceral division surrounds the buccinator, pharyngeal constrictor
muscles, larynx, trachea, oesophagus, thyroid, and parathyroid glands and extends down into the anterior mediastinum,
overlying the brous pericardium and great vessels [30]. The
visceral division contributes the buccopharyngeal fascia separating the oesophagus from the deep layer of the deep cervical fascia and forms the anterior border of the retropharyngeal
space. The middle layer also contributes to the medial aspect
of the carotid sheath.
Superficial layer
Deep cervical fascia
Pretracheal
(visceral) fascia
Buccopharyngeal
(visceral) fascia
Carotid sheath
Prevertebral
layer deep cervical fascia
ascia (anterior layer of
prevertebral fascia)
Retropharyngeal
space
Danger space
Trachea
Infrahyoid fascia
Thyroid gland
Sternocleidomastoid
muscle
Common carotid arte
Internal jugular vein
Oesophagus
Cervical vertebra (C7)
Fig. 7.1 The neck fascial framework

7 Incision andDrainage ofDeep Neck Space Infections
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89
The deep layer of deep cervical fascia (or prevertebral
fascia) contains the deep neck musculature, brachial plexus,
phrenic nerve, vertebral vessels, subclavian vessels inferiorly, and the vertebral column. It divides into two layers: the
prevertebral and alar layers. Both layers contribute to the
posterior aspect of the carotid sheath [40]. The carotid sheath
is a conuence of each layer of deep fascia running from the
skull base to the thorax.
7.5.2 Neck Spaces
The described fascial framework creates multiple real and
potential deep neck spaces—understanding a space to be an
anatomic region bounded by fascia. In this way, neck spaces
are classied according to their location, for example suprahyoid, infrahyoid, or parapharyngeal. Table7.1 outlines the
limits and contents of these spaces and lists considerations
regarding infections in each space.
7.6 Most Relevant Complications
7.6.1 Necrotizing Fasciitis
Necrotizing fasciitis is a severe form of deep neck infection
that occurs more often in older patients and those who are
immunocompromised. Treatment requires critical care support, management of immunocompromising conditions,
broad-spectrum intravenous antibiotics, and surgical exploration [41]. Debridement of dead tissue until a bleeding,
viable edge or vital nerves or vessels are reached is
recommended. Mortality may be as high as 20–30% in
treated patients [42].
7.6.2 Mediastinitis
Mediastinitis is a rare complication of deep neck infection
caused by the spread of infection along the retropharyngeal
and prevertebral planes of the neck into the upper mediastinum [43]. Presentation includes diffuse neck oedema and
pleuritic pain with deep breathing. Cross-section imaging
with intravenous contrast often reveals the presence of uid
collection, air-uid levels, or stranding or inltration of the
mediastinal fat. Thoracotomy should be strongly considered
in cases that extend beyond the upper mediastinum or that
involve more than one mediastinal compartment.
7.6.3 Lemierre’s Syndrome
Lemierre’s syndrome is septic thrombophlebitis of the internal jugular vein following an oropharyngeal infection [44].
Up to 60% of cases are caused by a Fusobacterium necroph-
orum infection [45]. Other pathogens that have been
described include Streptococcus, Staphylococcus aureus,
Klebsiella spp., and Pseudomonas [46]. The key to early
diagnosis is awareness of the classic history and course of
this illness. Diagnosis can be conrmed by showing thrombophlebitis of the internal jugular vein, culturing F. necroph-
orum from normally sterile sites, or demonstrating metastatic
lesions in this clinical setting. The cornerstone of management is draining of purulent collection where possible, with
prolonged courses of appropriate antibiotics [47]. First-line
therapy includes intravenous beta-lactamase-resistant antibiotics with or without heparin anticoagulation. Surgery to
excise the jugular vein may be indicated in patients with a
worsening clinical course despite appropriate medical therapy or in the event of neck abscess formation.
7.6.4 Ludwig’s Angina
Ludwig’s angina is a life-threatening cellulitis of the soft tissue involving the oor of the mouth and neck. Both the sublingual and submaxillary spaces are involved bilaterally.
Infection in the lower molar is the most common cause of
Ludwig’s angina. The infection is rapidly progressive, leading to aspiration pneumonia and airway obstruction [48].
7.7 Conclusion
DNSI can cause life-threatening emergency situations.
Careful clinical, haematological, biochemical, and radiological assessments are required. Airway management should
always be considered, with the airway secured if necessary.
A clear understanding of the anatomy of the neck spaces and
the approaches to them is required in order to tackle them
surgically. Conservative approaches may be considered, but
a careful, individualized management plan is needed for all
patients.
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