Fine-needle aspiration biopsy (FNAB or FAB) is currently considered as the primary method for diagnostics of nodular lesions in thyroid, mammary glands, lymph nodes, masses in soft tissues etc.
Biopsy entails extraction of a small part of human tissue for study and examination for any signs of various diseases. As a rule, a tissue sample may be taken from various organs.
A needle is normally injected through the skin for sampling into the area of pathological cellular changes. For safe biopsy, visualization control is often used, like: USI, X-ray, computer tomography (CT) or magnetic resonance tomography (MRT). Such investigations make it possible to be sure of proper position of the needle inside of the paraplasm.