AP BIOLOGY

Detailed explanation-1: -The syringe attached to the needle suctions out a small sample of cells and sometimes fluid. This procedure may also be called a fine needle biopsy or FNA. It is the least invasive, called minimally invasive, of the different biopsy methods.

Detailed explanation-2: -Fine needle aspiration requires a small needle (22-gauge or smaller). A 23 gauge needle (1-1.5") is successful for most palpable masses. Slightly larger gauge needles work better in breast, dense fibrous tissue, and fatty lesions (benign breast nodules, lipomas, etc.).

Detailed explanation-3: -The removal of fluid, cells, or tissue with a thin needle for examination under a microscope. Also called FNA biopsy.

Detailed explanation-4: -There are 2 types of needle biopsies: Fine needle biopsy (also called fine needle aspiration) Core needle biopsy (also called core biopsy)

Detailed explanation-5: -The most common types include: (1) incisional biopsy, in which only a sample of tissue is removed; (2) excisional biopsy, in which an entire lump or suspicious area is removed; and (3) needle biopsy, in which a sample of tissue or fluid is removed with a needle.