There are two main functions of puncture needle: first, catheter drainage after puncture;2. A little tissue was punctured for pathological examination or cytological examination.For example, when the human body has pleural effusion or peritoneal effusion or peritoneal infection, ultrasound-guided puncture can be performed. Generally, the effusion can be performed at the most superficial part of the body surface to reduce collateral damage. After the abscess or effusion is extracted by puncture, the guide wire is placed along the puncture needle, and then the drainage tube is placed for drainage.
If the patient suspects that there is a tumor in a certain part, but cannot make a positive diagnosis through imaging examination, it is necessary to take pathological examination through puncture, such as thyroid nodule or breast nodule or suspected cancer. If the nodule is confirmed as malignant tumor by pathology, the diagnosis can be made clearly.
