Screening, or buffing, the floor will only remove light marks caused by normal wear and tear. Once the floor is screened (lightly sanded) it will be coated with a coat of polyurethane. It usually takes one day to screen and recoat a hardwood floor. Screening will not remove deeper scratches and indentations.
Definition. A liver biopsy is a medical procedure performed to obtain a small piece of liver tissue for diagnostic testing. Liver biopsies are sometimes called percutaneous liver biopsies, because the tissue sample is obtained by going through the patient's skin.
1 Liver biopsy is performed to sample tissue from the lesion in the liver, which is analyzed by a pathologist to confirm the suspected diagnosis of liver cancer. 2  Liver biopsy is not needed in every case, especially if the imaging study and lab markers are characteristic for liver cancer.