What is the basic investigative process in oral pathology?
What are the types of differential diagnosis?
How is differential diagnosis structured?
It is based on likelihood and probability. It is listed from most likely to least likely
What information can help us with a differential diagnosis?
Also some facts that need to be considered:
3.
How do we usually categorised oral lesions?
*Surveys of biopsies exclude clinically diagnosed oral lesions
What is the step by step process to understand the arisal of a certain oral lesion?
Use this scheme
DIHDHNI
How do we take history about a lesion?
What is the systematic way to examine a lesion?
What are some of the terminology in a lesion with elevated morpholoy?
Blisters - Fuild filled masses:
Non-blisters - not fluid filled elevations
What are some of the terminology of a lesion with depressed or flat morphology?
Depressed:
1. Ulcer (epithelium lost) - if it is yellow tissue more likely to be an ulcer
Flat:
1. Macule - discoloration (freckel)
What kind of structure is this?
A brown macule - a flat discoloration
Site - RHS lower vermilion shifted around 10 mm from the midline of the lips
Size - measure with peiro probe - around 5-10mm
Morphology - flat, round, heart shapped
Colour - brown
Consistency - NOPE IT IS A PHOTO - Texture - maybe rough, defiantly different from the normal lip
What kind of structure is this?
It is a white polyp
Site - RHS buccal mucosa adjacanet to the buccal surface of 45
Size - measure with perio probe - around 10-15mm
Morphology - elevated, rounded, sphere like
Colour - white, opaque, with small amounts of pink
Consistency - NOPE IT IS A PHOTO - Texture - rubbery
What constitutes the oral pharynx?
From uvuala to the posterior wall of the pharynx
What investigation do we have in oral pathology?
What are some of the types of biopsy?
What are the consideration during biopsy?
What should you do with some of the lesions that you may encounter to understant if they are vascular?
Use a small, transparent plate and apply pressure - if the lesion stars to blanch, it is most likely to be vascular
What are some of the features of pathology that can be observed by a light based system such as Velscope?
In some instances, the pathological tissue may take up the light thus resulting in a shadowing of the structures.
Good adjunct but please do not use this as a basis of diagnosis.
What are some common stains in oral pathology?
What is exfoliative cytology?
It is the examination of cells scraped from the surface of the lesion - great for fungal infection - it is quick and easy but may not be used to more complex lesions with pathology below the surface
What is fine needle aspiratin used for?
It is mostly used for intraosseous pathology and fluctuant soft tissue pathology and neck masses
What is core biopsy used for?
It is used to remove the core of some tissues - it is similar to scalpel biopsy but it has more complication than fine needle biopsy.
Mostly used in biopsy in the abdomen but also can be used on a lymph node
What is the basic way of performing a biopsy?
What is the aspiration test?
When you stick a needle into a bony cavity or a swelling, aspirate and determine what is inside.
This could be done to determine further steps - maybe even a biopsy!
You aspirated? What is in the needle? Is it a fluid? Is it solid tissue? Is it puss? Is it blood?