What is a Biopsy and How is it Performed? 5 Mar, 2025
Biopsy is the process of taking a small tissue sample from the body and examining it in a laboratory environment, which is an important part of the medical diagnosis process. This process is used to understand the cause of a lesion or tissue abnormality, to diagnose serious diseases such as cancer, or to evaluate other medical conditions.
Why Is a Biopsy Performed?
The main purpose of a biopsy is to make a definitive diagnosis by examining the structure and characteristics of a suspicious tissue or cell cluster. This procedure is a method frequently used in the following cases:
- Cancer Diagnosis: In cases where cancer is suspected, a tissue sample taken by biopsy helps determine the presence and type of cancer cells.
- Diagnosing Infection: Sometimes, a biopsy may be required to determine the type and cause of infections.
- Inflammatory Diseases: Biopsy may be used to diagnose and monitor inflammatory diseases such as rheumatoid arthritis or lupus.
- Tissue Abnormalities: A biopsy may be done to determine whether a mole, lump, or other tissue change on the skin is benign or malignant.
How is a Biopsy Performed?
The biopsy procedure varies depending on the location and type of tissue sample to be taken. Commonly used biopsy methods include:
- Needle Biopsy: A thin needle is used to remove a sample of tissue or fluid. This method can be used to take samples from organs such as the skin, breast, liver or lungs.
- Surgical Biopsy: A small incision is made to obtain a tissue sample. This method is preferred when larger or deeper tissue samples are required.
- Endoscopic Biopsy: A tissue sample is taken from the inside of the body (for example, the stomach or intestines) using a thin, lighted tube called an endoscope.
- Skin Biopsy: A small sample of tissue is taken from a skin lesion. This procedure is usually done under local anesthesia.
Post-Biopsy Process
After the biopsy, the tissue sample is sent to the pathology laboratory. Pathologists examine the tissue sample under a microscope to make a diagnosis. Biopsy results are usually available within a few days or weeks.
After the biopsy, you may experience temporary side effects such as mild pain, swelling, or bruising. Your doctor may prescribe pain relievers or other medications to help relieve these side effects.