A diagnostic test in which a small amount of tissue or cells are removed from the body for microscopic examination. It is an accurate method of diagnosing many illnesses, including cancer. Microscopic examination of tissue (histology) or of cells (cytology) usually gives a correct diagnosis.
There are several types of biopsy. In excisional biopsy, the whole abnormal area is removed for study. Incisional biopsy involves cutting away a small sample of skin or muscle for analysis. In a needle biopsy, a needle is inserted through the skin and into the organ or tumour to be investigated. Aspiration biopsy uses a needle and syringe to remove cells from a solid lump. Guided biopsy uses ultrasound scanning or CT scanning to locate the area of tissue to be biopsied and to follow the progress of the needle. In endoscopic biopsy, an endoscope is passed into the organ to be investigated and an attachment is used to take a sample from the lining of accessible hollow organs and structures, such as the lungs, stomach, colon, and bladder. In an open biopsy, a surgeon opens a body cavity to reveal a diseased organ or tumour and removes a sample of tissue. Prompt analysis, in some cases by frozen section, can enable the surgeon to decide whether to remove the entire diseased area immediately.
A surgical process in which a small piece of tissue is cut out or otherwise sampled, e.g. through a needle biopsy, to enable a diagnosis to be made.
Biopsy means the removal and examination of tissue from the living body for diagnostic purposes. For example, a piece of a tumour may be cut out and examined to determine whether it is cancerous.
n. the removal of a small piece of living tissue from an organ or part of the body for microscopic examination. Biopsy is an important means of diagnosing cancer from examination of a fragment of tumour. It is often carried out with a special hollow needle, inserted into the liver, kidney, or other organ, with relatively little discomfort to the patient.
A surgical procedure in which a conical or cylindrical section of the lower part of the cervix is removed. A cone biopsy is performed after an abnormal cervical smear test result if the exact precancerous or cancerous area (see cervix, cancer of) cannot be identified by colposcopy.... cone biopsy
are analysed by staining, in which Abnormal area dyes are used to Normal to show up structures or identify constituents such as antibodies or enzymes. A tissue sample may be tested with specific antibodies in the investigation of infection and inflammation. In some cases, a tis-sue culture may be required.... biopsy samples
an *interventional radiology technique in which, after taking a sample of tissue (biopsy) to check for cancer cells or abnormality, the tract of the biopsy needle is plugged with materials to prevent bleeding at the site. It is mostly used for liver and renal biopsies.... plugged biopsy
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