Biopsy techniques involve the removal and examination of a small sample of tissue from the body for diagnostic purposes. There are various types of biopsy techniques, including needle biopsies, surgical biopsies, and endoscopic biopsies. Needle biopsies involve using a thin needle to extract a sample of tissue, such as in a fine needle aspiration biopsy. Surgical biopsies involve a more invasive procedure to remove a larger piece of tissue, typically done under anesthesia. Endoscopic biopsies are performed using a thin, flexible tube with a camera and cutting tool to collect tissue samples from within the body. Biopsy techniques are commonly used to diagnose conditions such as cancer, infections, and inflammatory diseases. The samples obtained through biopsy techniques are analyzed in a laboratory to provide information on the nature of the tissue and any abnormalities present. These techniques are essential for accurate diagnosis and treatment planning in various medical specialties.