What is the difference between FNA and ultrasound guided biopsy?
FNA obtains cells for analysis and a biopsy obtains an entire piece of tissue. FNA is easier and in some cases safer and results are obtained quickly but in some instances the sample obtained is not diagnostic because it does not contain enough information. Biopsy provides a larger, more reliable sample but is not safe to perform in some areas and results often take several days longer than FNA results.
