Introduction
Biopsy is a fundamental method used for the diagnosis and evaluation of diseases. This article will focus on two common types of biopsies: fine needle biopsy (FNB) and core needle biopsy (CNB). Both methods are suitable for different clinical scenarios and play a significant role in the diagnosis and treatment processes of patients.
Fine Needle Biopsy (FNB)
Definition and Method
Fine needle biopsy is a procedure in which a small sample is taken from an organ or tissue using a thin needle. It is typically performed under the guidance of imaging techniques such as ultrasound, computed tomography (CT), or fluoroscopy.
Procedure: During fine needle biopsy, the needle is directed toward the targeted area, and a tissue sample is collected. This needle is generally in the range of 22-27 gauge and is very thin.
Imaging: The imaging techniques used before and during the procedure help accurately locate the target area and ensure proper needle placement.
Applications
Thyroid Nodules: Fine needle biopsy is commonly used in the evaluation of abnormal nodules in the thyroid gland. This is crucial for determining whether the nodule is malignant or benign.