Indications
Infections
Malignancy
Diffuse Infiltrative Lung Process
Fine needle aspiration provides material for cytological and bacteriological exams only. In general, it does not provide tissue for histological exam. Modifications of needles have made it possible to have a small core of tissue. Benign tumors and granulomas can be diagnosed only by a histological exam of the tissue. The larger the core of tissue the needle can provide, the higher the complication. These issues enter in the selection of needles and indications for the procedure.