Radiology in ENT Flashcards
The tonsils lie close to the retropharyngeal space, what does this mean?
A tonsillar mass could extend into the mediastinum
Foramen rotundum
Transmits V2 of trigeminal nerve.
Connects PPF to middle cranial fossa
Transmits V2 of trigeminal nerve.
Connects PPF to middle cranial fossa
Foramen rotundum
transmits V3 of trigeminal nerve and accessory meningeal
artery
Foramen ovale
Foramen spinosum
Transmits middle
meningeal artery
Transmits vidian nerve, artery and vein
Vidian canal
Investigation of choice for cholesteatoma?
CT
How does the middle cranial fossa communicate with the PPF?
Foramen rotundum
How does the middle cranial fossa/foramen lacerum communicate with the PPF?
Vidian canal
How does the orbit communicate with the PPF?
Inferior orbital fissure
How does the nose communicate with the PPF?
Sphenopalatine foramen
How does the mouth communicate with the PPF?
Greater and lesser palatine canals
How does the masticator space communicate with the PPF?
Pterygomaxillary fissure
-Origin of petrosal
nerves
- Taste fibers synapse
Genigulate ganglion
Where does the pharynx begin and end?
From base of skull to C6/cricopharyngeus
Where does the oropharynx start and end?
From soft palate to epiglottis
What makes the posterior and lateral walls of the oropharynx?
The superior and middle constrictors
Valecula
Between base of tongue (posterior 1/3rd of tongue) and epiglottis
Hypopharynx
From level of glossoepiglottic and pharyngoepiglottic folds to inferior cricoid cartilage.
Reference points:
Oropharynx above
Cervical oesophagus below
Larynx
Superior and inferior extent as for hypopharynx but anterior.
Reference points:
Oropharynx above
Trachea below
Masticator space contents and pathology
Contents
Mandible
Muscles
CN V
Pathology
Dental abcess / cyst
Invasion from oral cavity
Pathology of the carotid space?
Schwannoma
Paraganglioma
Lymph nodes
