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General Surgery

Pharynx

Built from Skandalakis' Surgical Anatomy: The Embryologic and Anatomic Basis of Modern Surgery

What’s inside

8 sections · 177 slides

  1. 01

    Overview

    • Scope of this topic
    • Regions of the pharynx
    • Anatomic and Surgical History of the Pharynx
    • Anatomic and Surgical History of the Pharynx (continued)
    • Anatomic and Surgical History of the Pharynx (continued)

    5 slides

  2. 02

    Embryogenesis of the pharynx

    • Pharynx as a foregut derivative
    • Components of the branchial apparatus
    • Branchial arch system
    • Adult pharyngeal derivatives of the pouches
    • Terminology: branchial versus pharyngeal
    • Summary of Adult Structures Derived from Pharyngeal Arches: muscles and skeletal elements
    • Summary of Adult Structures Derived from Pharyngeal Arches: muscles and skeletal elements (continued)
    • Summary of Adult Structures Derived from Pharyngeal Arches: ligaments and nerve supply
    • Summary of Adult Structures Derived from Pharyngeal Arches: ligaments and nerve supply (continued)
    • Summary of Adult Structures Derived from Pharyngeal Arches: pouch and groove derivatives
    • Summary of Adult Structures Derived from Pharyngeal Arches: pouch and groove derivatives (continued)
    • Anomalies of the lateral branchial apparatus
    • First cleft and pouch defects
    • Congenital cervicoaural fistula or cyst
    • Complete second branchial fistula: course
    • Course of a complete second branchial fistula
    • Anomalies of the pharyngeal clefts and pouches
    • Second pouch sinuses and cysts
    • Types of second branchial cleft cyst
    • Third cleft and pouch defects
    • Fourth cleft and pouch defects
    • Pathway of a fourth pharyngeal pouch abnormality
    • Piriform apex fistula at endoscopy
    • Operative principles for branchial anomalies
    • Lingual thyroid
    • Sites of thyroid descent and ectopic thyroid
    • Exposure of a lingual thyroid
    • Thyroglossal duct cyst and the Sistrunk procedure

    28 slides

  3. 03

    Nasopharynx

    • Alimentary and respiratory tracts of the head and neck
    • Dual embryologic origin of the nasopharynx
    • Mucosal transition at the eustachian tube orifice
    • Rathke's pouch and development of the hypophysis
    • Development of the nasal and oral cavities
    • Congenital anomalies of the nasopharynx
    • Bilateral choanal atresia on axial CT
    • Surface anatomy: extent of the nasopharynx
    • Base of the skull
    • Skull in medial sagittal section
    • Roof and posterior wall of the nasopharynx
    • Pharyngeal bursa and pharyngeal hypophysis
    • Lateral wall of the nasopharynx
    • Pharyngeal cavity opened from behind
    • Waldeyer's ring
    • Waldeyer's tonsillar ring in sagittal view
    • Waldeyer's tonsillar ring in axial view
    • Endoscopic landmarks of the nasopharynx
    • Adenoids and masses on nasopharyngeal examination
    • Midline nasopharyngeal remnants
    • Techniques of nasopharyngeal examination
    • Examination under general anaesthesia
    • Indications for nasopharyngeal examination
    • Layers of the nasopharyngeal wall
    • Skull base attachment of the pharynx
    • Pharyngeal muscles exposed from behind
    • Nasopharynx and the middle cranial fossa
    • Arteries of the skull in median section
    • Internal carotid artery and cavernous sinus
    • Routes of spread of nasopharyngeal tumours
    • Muscles crossing the space below the skull base
    • Tensor and levator veli palatini in tubal function
    • Blood supply and innervation of the nasopharynx
    • Arteries and nerves of the lateral nasal wall and palate
    • Grisel's syndrome after nasopharyngeal surgery
    • Neoplasms of the nasopharynx
    • Benign Non-Epithelial Tumors, Involving the Nasal Cavity, Paranasal Sinuses, and Nasopharynx – 156 Cases
    • Benign Non-Epithelial Tumors, Involving the Nasal Cavity, Paranasal Sinuses, and Nasopharynx – 156 Cases (continued)
    • Malignant Tumors of Nasopharynx from the Mayo Tissue Registry, 1972 to 1981
    • Malignant Tumors of Nasopharynx from the Mayo Tissue Registry, 1972 to 1981 (continued)
    • Nasopharyngeal carcinoma: presentation
    • Lymphatic spread from the nasopharynx
    • Superficial cervical and facial lymph nodes
    • Cranial nerve involvement in advanced disease
    • Current Pharynx Cancer Staging
    • Current Pharynx Cancer Staging (continued)
    • Why the nasopharynx demands anatomical mastery

    47 slides

  4. 04

    Myofascial framework of the pharynx

    • Structure of the pharyngeal wall
    • The three constrictor muscles
    • Muscular wall of the pharynx from behind
    • Superior pharyngeal constrictor
    • Middle pharyngeal constrictor
    • Inferior constrictor and cricopharyngeus
    • Muscles of the tongue, pharynx and larynx
    • Fascial coverings of the constrictors
    • Interval between superior and middle constrictors
    • Vessels and nerves of the dorsolateral pharyngeal wall
    • Interval between middle and inferior constrictors
    • Superior laryngeal nerve block
    • Interval below the inferior constrictor
    • Motor innervation of the pharynx
    • Sensory innervation of the pharynx
    • Blood supply and venous drainage of the pharynx
    • Blood vessels and nerves of the neck
    • Lymphatic drainage of the pharynx
    • Killian's dehiscence and Zenker's diverticulum
    • Pharyngo-oesophageal segment and sites of herniation
    • Zenker's diverticulum

    21 slides

  5. 05

    Oropharynx

    • Boundaries of the oropharynx
    • Soft palate: structure and function
    • Muscles of the soft palate
    • Levator veli palatini
    • Tensor veli palatini and cleft palate
    • Musculi uvulae and the submucous cleft
    • Palatoglossus and palatopharyngeus
    • Blood supply and innervation of the soft palate
    • Palatine tonsil and the tonsillar fossa
    • Bed of the palatine tonsil
    • Tonsillar capsule and the peritonsillar space
    • Spread of a peritonsillar abscess
    • Blood supply of the palatine tonsil
    • Vascular supply of the palatine tonsil
    • Innervation of the tonsil and referred otalgia
    • Pathway of referred otalgia from the oropharynx
    • Base of tongue
    • Innervation and lymphatic drainage of the base of tongue
    • Valleculae and the pharyngoepiglottic folds

    19 slides

  6. 06

    Laryngopharynx

    • Extent and subsites of the laryngopharynx
    • Posterior pharyngeal wall and piriform recess
    • Postcricoid area
    • Innervation of the laryngopharynx
    • Vascular and lymphatic drainage of the laryngopharynx
    • Presentation of hypopharyngeal tumours
    • Referred otalgia from the hypopharynx
    • Protecting the external branch of the superior laryngeal nerve
    • Resection and reconstruction of the laryngopharynx
    • Examination of the oropharynx
    • Examination of the laryngopharynx
    • Sequence of direct laryngoscopy
    • Laryngeal crepitus

    13 slides

  7. 07

    Deep neck spaces around the pharynx

    • Pharyngeal relationship to deep neck spaces
    • Retrovisceral compartments
    • Fascial spaces of the head and neck
    • Sagittal view of the head and neck fascial spaces
    • Retropharyngeal space
    • Danger space and prevertebral space
    • Parapharyngeal and retropharyngeal spaces in sagittal view
    • Deep neck spaces in axial view
    • Parapharyngeal space: boundaries
    • Frontal view of the parapharyngeal space
    • Pre- and retrostyloid compartments
    • Parapharyngeal masses and infections
    • Penetrating injuries of the lateral oropharyngeal wall
    • Posterior pharyngeal wall carcinoma
    • Nodal metastasis in hypopharyngeal cancer

    15 slides

  8. 08

    Physiology and surgical complications

    • Velopharyngeal closure
    • Phases of swallowing
    • The pharyngeal phase and airway protection
    • Cricopharyngeus and dysphagia
    • Adenotonsillectomy: immediate complications
    • Post-tonsillectomy haemorrhage
    • Velopharyngeal incompetence after adenoidectomy
    • Grisel's syndrome after adenotonsillectomy
    • Nasopharyngeal stenosis after adenotonsillectomy
    • Severe nasopharyngeal stenosis
    • Uvulopalatopharyngoplasty: goals and technique
    • Velopharyngeal insufficiency after UPPP
    • Nasopharyngeal stenosis after UPPP
    • Dysphagia after pharyngeal tumour surgery
    • Pharyngocutaneous fistula
    • Pharyngeal stenosis after tumour surgery
    • Take-home points: embryology and anomalies
    • Take-home points: anatomy and surgery
    • Sources cited in the text
    • Sources cited in the text (continued)
    • Skandalakis' Surgical Anatomy: The Embryologic and Anatomic Basis of Modern Surgery
    • Join our WhatsApp groups

    22 slides