Ear pathology

Question 1

What type of cell lines the external ear?

Answer 1

Epidermis

Question 2

What types of glands are found on the external ear?

Answer 2

Sebacceous and ceruminous glands

Question 3

What cells line the middle ear?

Answer 3

Stratified columnar glandular epithelium

Question 4

What causes otitis media?

Answer 4

Usually viral.

If bacterial then Strep Pneumoniae, H flu

Question 5

What is a cholesteatoma?

Answer 5

Keratinised squamous epithelium in middle ear

Question 6

What causes a cholesteatoma?

Answer 6

Chronic otitis media with a perforated tympanic membrane

Question 7

What is a vestibular Schwannoma?

Answer 7

Benign tumour of myelin producing Schwann cells

Question 8

Where does a vestibular Schwannoma occur?

Answer 8

Within the temporal bone at the cerebellopontine angle

Question 9

What should be considered if vestibular schwannomas are bilateral?

Answer 9

Neurofibromatosis type 2

Question 10

What is the mechanism of acquisition of neurofibromatosis?

Answer 10

Autosomal dominant but can be a mutation

Question 11

What can be seen in the eye in neurofibromatosis?

Answer 11

Lisch nodules