ENT Flashcards
What are the 3 main bones of the middle ear?
Malleus - attaches to tympanic membrane, incus, stapes (attaches to oval window of inner ear)
What is the function of the Eustachian tube?
Connects middle ear to the nasopharynx and equalises the pressure to that of the external auditory meatus (if dysfunction= negative pressure builds in middle ear)
What makes up the bony labryinth (3) of the inner ear?
Semi-circular canals- involved in balance
Cochlear- houses the cochlear duct for hearing
Vestibule - balance
What are some red flag questions to ask in a patient with a neck lump?
Weight loss, night sweats, fever Hard, fixed lump Dysphagia Otalgia Hoarseness Unilateral nasal congestion Epistaxis CN palsies
What are 5 causes of neck lumps?
Malignancy- Lymphoma, squamous cell carcinoma, thyroid malignancy, carotid body tumours
Infective- reactive lymphadenopathy, abscess
Congenital - thyroglossal cyst (midline), branchial cyst (lateral), dermoid cyst (midline), salivary gland disease
Thyroid goitre - Hashimoto’s, Graves
Inflammatory- TB, sarcoidosis
What type of carcinoma (histology) is most common in head and neck cancers?
Squamous cell carcinoma
How would you investigate a SCC of head and neck?
Bloods- FBC, U&E, LFTs, CRP
Ultrasound
Flexible nasolaryngoscopy
What are the signs/symptoms of lymphoma?
Lymphadenopathy - rubbery nodes + B symptoms- weight loss, night sweats, fever
What are the two types of non-Hodgkin’s lymphoma and which type is more aggressive?
Low grade- follicular
High grade- diffuse B cell
High grade is more aggressive but can be cured. Compared to low grade- slow growing but incurable.
What is a carotid body tumour?
Tumour of the paraganglionic cells of the carotid body
How does a carotid body tumour present?
Painless, pulsatile neck lump with a bruit. Can’t move it up and down but can move it side to side
How do you treat a carotid body tumour?
Active monitoring or surgical excision
What is the typical age for a branchial cyst to present in?
Around 30s- if older, need to rule out thyroid/oesophageal cancer
What is the branchial cyst?
Remnant of the branchial cleft from embyonic development
How does a branchial cyst present?
Painless mass on lateral side of neck. no symptoms unless infected.
How do you investigate a branchial cyst?
US. Aspirate for cytology- check it’s not metastasis from head and neck ca
How do you treat a branchial cyst?
Surgical excision
What is a thyroglossal cyst?
Remnant of the thyroglossal tract that should obliterate at birth
What is the typical age group for a thyroglossal cyst to present in?
Children- around 5
What are the symptoms and signs of a thyroglossal cyst? What can you ask the patient to do to help confirm a thyroglossal cyst?
Painless palpable lump in the midline
Can ask the patient to swallow and stick out their tongue- it will move on swallowing and tongue protrusion
How do you investigate and treat a thyroglossal cyst?
TFTs
Ultrasound +/- aspiration
Tx: surgical
A patient comes into your practice with painful lump under her jaw. She says the swelling and pain is particularly noticeable at meal times. The pain is severe but intermitten. What is the likely diagnosis?
Stones in salivary gland= sialolithiasis
Lump - submandibular stones are most common. painful mainly at meals.
How do you treat Sialolithiasis?
Supportive
What is the most common cause of acute sialadenitis?
Staphylcoccus