soft tissue lesions Flashcards
why is aspiration superior to swabs for sampling oral lesions
protects anaerobic species within lesions
avoids contamination from oral commensals
when is a fine needle biopsy done
to aspirate cells from solid lesions e.g neck swellings, salivary gland lesions
incisional biopsy
takes representative sample of lesion
usually done for larger lesions with uncertain diagnosis e.g lichen planus
punch biopsy
type of incisional biopsy
uses a hollow trephine which removes core of tissue with minimal damage
lumps in which site should always be presumed to be cancerous until proven otherwise
upper lip
in what solution should biopsy samples be placed
10% formalin
why should samples not be placed on gauze prior to being placed in their collecting medium
can cause distortion
fibrous epulis
- what is it
- appearance
- biopsy type
hyperplastic response to irritation seeing swelling on gingivae
smooth surface, round and pedunculated
requires excisional biopsy and removal of source of irritiation
fibroepithelial polyp
- what is it
- appearance
- biopsy type
growth caused by frictional irritation or trauma
commonly seen on buccal mucosa or inner surface of lower ip, pink with smooth surface
excisional biopsy for removal or patient may opt for no removal if not causing bother
Giant cell epulis
peripheral giant cell granuloma found on the gingivae
lesion made up of lots of multinucleated giant cells
deep red or purple in colour
surgical excision (if peripheral)
sessile vs pedunculated
sessile - grows from flat surface
pedunculated - grows from stalk
exophytic lesion
raised, outward growing lesion from epithelium or lumen
pros and cons to cryotherapy for removal of haemangiomas
pro - no bleeding
cons - no histological diagnosis
lipoma
benign neoplasm of fat cells
soft sessile swelling thats pale yellow in colour
excision removal
