A thoracocentesis biopsy is done, mainly on the lungs. When CT of the lungs reveals a nodule, and the tendency is for the nodule to be malignant, in this case a puncture needs to be done to determine the nature of the mass through a pathologic biopsy. And do lung puncture biopsy, need to be hospitalized operation, this operation time is very short, under the guidance of CT through the coarse needle puncture to the site of the mass, remove a few pieces of tissue can be, the time is about within half an hour to an hour. However, after the puncture, you need to be hospitalized for 2-3 days for observation, so, including the preoperative examination and postoperative hospitalization, it is usually around 5 days. And about 5 days does not include the time waiting for the pathology, the pathology is usually 3-5 working days out of the results. So, with lung puncture, it can usually be done in about 5 days.