What is a Percutaneous Biopsy?
Percutaneous needle biopsy is a valuable interventional diagnostic method that has been applied to various parts of the body and multiple organ lesions. There are three biopsy methods for percutaneous needle biopsy, namely fine needle aspiration biopsy, cutting biopsy and ring drill biopsy.
Percutaneous needle biopsy
Right!- Percutaneous needle biopsy is a valuable interventional diagnostic method that has been applied to various parts of the body and multiple organ lesions. There are three biopsy methods for percutaneous needle biopsy, namely fine needle aspiration biopsy, cutting biopsy and ring drill biopsy.
- Percutaneous needle biopsy is a valuable interventional diagnostic method that has been applied to various parts of the body and multiple organ lesions. There are three biopsy methods for percutaneous needle biopsy, namely fine needle aspiration biopsy, cutting biopsy and ring drill biopsy. The three types of biopsy use different biopsy needles, which are suitable for the biopsy needs of different parts of the lesion.
- First, the biopsy needle
- At present, there are many types of biopsy needles, but they can be roughly divided into three types: Suction needles: The diameter of the needles is small and the damage to the tissue is small. Only cytological specimens such as Chiba needles can be obtained. Cutting needle: The diameter of the needle is relatively thick, and the tip of the needle has different shapes. Tissue core or tissue fragments can be obtained during biopsy, which is feasible for pathological diagnosis. There are many types of needles, such as Turner needles and Rotex needles. Ring drill: It is mainly used for biopsy of bone tissue lesions. The needle tip has sharp cutting teeth, which is convenient for passing hard bone and cartilage tissue to obtain histological specimens, such as Franseen needle.
- two. Guide method for percutaneous needle biopsy
- Percutaneous needle biopsy is performed under the guidance of imaging technology, which is different from open and blind biopsy. Common guidance methods are fluoroscopy, USG, and CT. The simplest fluoroscopy is suitable for lesions that can be located under fluoroscopy, such as lung masses and bone lesions. USG has accurate orientation of cystic or solid masses in parenchymal organs. The USG can display the needle trace of the biopsy needle and the method of needle guidance (Figure 6-2-5). CT guidance is accurate, but the procedure is more complicated than ultrasound guidance. It is mostly used for biopsies of abdominal, pelvic and chest lesions.
- Clinical application
- In addition to intracranial lesions, it has been widely used to diagnose lesions in various systems and organs. Chest; diagnosis of unknown nodules and masses in the lung, known as malignant lesions, but those with unknown tissue types are suitable for percutaneous needle biopsy. Needle biopsy is 90% accurate for malignant lesions and 95% for benign lesions. Abdomen: Unknown lesions of liver, pancreas, kidney, retroperitoneum and other parts can be percutaneous needle biopsy, especially for the differential diagnosis of pancreatic cancer and pancreatitis. Others: Percutaneous needle biopsy can be performed on bone, joint, muscle system, pelvic, breast, and spinal canal lesions.
- Fine needle biopsy has few complications, so it is a safe and effective method.