Pathology Flashcards
What links the auditory meatus and the external canal?
Epidermis
What is in the middle ear?
Columnar lined mucosa
Ossicles - malleus, incus and stapes
What is in the inner ear?
cochlea and vestibular apparatus
What cell type makes up the nasal vestibule?
Squamous
What cell type makes up the nose, and sinus
Schneiderian epithelium
What does respiratory mucosa contain?
Pseudostratified ciliated columnar
Seromucinous glands
What cell types make up the throat?
Respiratory and squamous epithelium
Describe the salivery gland?
Exocrine gland
Acinar component and ductular component
Serous cells
Describe serous cells?
Dark staining
Contain digestive enzymes including amylase
What colour does the mucinous component stain?
Clear grey
Describe peripheral myoepithelial cells
Flat or cuboidal with clear cytoplasm
Some have contractile properties
What is ottis media?
Inflammation of the middle ear
what pathogens can cause ottis media?
Strep pneumoniae
H influenzae
Moxarella catarrhalis
Pseudomonas aeruginosa
What is cholesteatoma?
Not a tumour
Doesnt contain cholesterol
Where does cholesteatoma affect?
Superior posterior middle ear and/or
What is the pathogenesis of cholesteatoma?
Chronic ottis media and perforated tympanic membrane
What makes up the lining of the middle ear?
Cuboidal or columnar grandular epithelium
What should you consider if someone has bilateral vestibular schwannoma?
Neurofibromatosis type 2
What should be considered if a young person has nasal polyps?
Cystic fibrosis
What antibody is found in microscopic polyangiitis?
pANCA
What antibody is found in Wegener’s?
cANCA
What virus does nasopharyngeal carcinoma have an association with?
Epstein Barr Virus
Also with nitrosamines in food
What does epstein barr virus affect?
epithelial cells of oropharynx and B cells
What is sialolithiasis?
Stones in the salivary ducts
What can paramyxovirus cause?
Mumps
Bilateral parotits
risk of secondary meningitis
what should you think if there is a young patient with a painful mass?
Malignancy
