Diagnosis and Management of Oral Disease: Biopsies Flashcards
What is a Biopsy? What types are there are why is it taken? (4)
- Incisional: part of the lesion is removed.
- Excisional: the entire lesion is removed
- Used for large lesions, to establish the diagnosis or where treatment depends on the diagnosis
Describe a good incisional biopsy (2)
- Full thickness of lesion
- Adjacent normal tissue included
How is an excisional biopsy incorporated into that management of a lesion? (2)
- Used for small lesions to confirm the diagnosis
- Used for more sinister lesions to establish completeness of excision
What is a Fine needle aspirate and when is it particularly useful? (2)
- Used to obtain cells from deep lesions
- Useful for suspected malignancy and Cystic lesions
What is a core/needle biopsy used for? (1)
Used to obtain a small sample or core of tissue from a deep lesion
What are Smears? What are they used for? (2)
- Examination of cells.
- Generally used for fungal infections
What is a Drill biopsy used for? (1)
Used for bone lesions
Which lesions should be biopsied in general dental practice? Which lesions should not be biopsied? (4)
- Only biopsy lesions which are easy to biopsy
- Only biopsy lesions which you are fairly confident of the diagnosis and you feel able to carry out the treatment.
- Do not biopsy bone (unless an apicectomy)
- DO NOT biopsy any lesion which you suspect is malignant
How much tissue should be submitted for histopathological examination? (1)
Good clinical practice to submit all tissue removed for histopathological examination
What medium is the tissue placed in? How should it be labelled? (2)
- 10% formol saline: screw topped jar.
- Information on pot and request form MUST be the same
What must the Carriage of specimens in the post comply with? (2)
- Carriage of specimens in the post : must comply with IATA 650 packing instructions
- UN3373 Biological Substance Category 3
