TERMS Flashcards
remove the entire lesion
includes portion of the normal tissue
-size of normal tissue depends on need
indications
- small lesion
- curative procedure needed
excisional biopsy
small area of tissue taken to ID the composition of a lesion or abnormality
excises some of the abnormality, but not all
if lesion is found to be cancerous, further surgery may be needed to remove the whole abnormality
incisional biopsy
various sizes of 2,3,4,5 mm. The smaller the more difficult to analyze histologically
above 3mm requries sutures for closure
punch biopsy
removes only selected portion of the lesion in question
more than one sample needed
used for non malignant
easier to perform
incisional punch biopsy
used for protruding skin lesions
skin tags
actinic keratosis
seborrheic keratosis
*quick and easy, reserved for epidermal lesions only, never for pigmented lesions, depressed scar
shave biopsy
shave
violating bone cortex
similar diagnostic accuracy for percutaneous techniques compared to open biopsy
percutaneous biopsies have a lower risk of complications
use of CT guidance or fluoroscopy guidance provides excellent spatial localization
multiple core obtained through a single bone window
bone biopsy
thin needle attached to syringe to aspirate small amount of tissue, 22G or 18G
needs to be located correctly or you miss the suspected lesion
US guidance can be used
fine needle aspiration
CNB-like FNAB, larger hollow needle or small cannula used to remove small cylinders or cores of tissue
up to 6 samples may be taken, used for possible OM
core needle biopsy
same as CNB but guided via radiograph, CT, US, mapped out to prior to procedure
stereotactic core needle biopsy
small incision, followed by a hollow probe, then the vacuum pulls tissue into probe
vacuum replaces the syringe and allows for larger samples
vacuum assisted corebiopsy
nail pathology in which the nail has grown into the ungualabia any may or may not be infected
onychocryptosis
