Diagnosis and Management of Oral Disease II Flashcards
What is a biopsy?
Removal of tissue for histopathological examination
What is an incisional biopsy?
Part of the lesion is removed
Used for large lesions to establish the diagnosis or where tx depends on the diagnosis
What makes a good incisional biopsy?
Full thickness of the lesion
Adjacent normal tissue
What is an excisional biopsy?
Entire lesion is removed
Part of the management of the lesion. Used for smaller lesions to confirm the diagnosis and for more sinister lesions to establish completeness of excision
For lesions you are sure are NOT malignant
What is the most common cancer in the oral cavity?
Squamous cell carcinoma
What is fine needle aspiration used for?
To obtain cells from deep lesions.
Useful for suspected malignancy or cystic lesions.
NOT appropriate for oral cavity
What is core/needle biopsy used for?
To obtain a small sample or core of tissue from a deep lesion
What are smears for?
Examination of cells
Generally used for fungal infections
Which lesions should be biopsied?
In GDP:
- Only biopsy lesions which are easy to biopsy
- Only biopsy lesions which you are fairly confident of the diagnosis and feel able to carry out the tx
- Do NOT biopsy bone (unless an apicectomy)
- Do NOT biopsy any lesion which you suspect is malignant
How to send a specimen?
Take tissue, put in 10% formol saline in a jar
Put in bag
Pt details and info on case
When next seeing the pt
Carriage of specimen must follow IATA 650 packing instructions
2nd to last pic differential diagnosis? What biopsy to take?
Dysplasia - not very well defined, red and white areas
Take incisional biopsy as v large, not 100% sure of diagnosis
Last pic differential diagnosis? What biopsy to take?
Polyps or fibrous polyps
Excisional biopsy
