The aspirator should be aware of the pertinent history and clinical information, significant radiological studies and the clinical question that FNAB may answer. The procedure as well as the minor complications of bruising and bleeding should be explained to the patient. Site-specific complications for deep needle aspiration biopsy should be described to the patient if image guided FNAB is performed. Informed consent should be obtained from the patient, guardian or legal representative. Written consent should be obtained if the institution requires it where the procedure is performed. The operator should be prepared to obtain material.
