Kidney Biopsy

What is a biopsy?

A biopsy is the process of removing tissue from any part of the body in order to examine it for disease. Some biopsies involve the removal of an entire lump surgically. However, many biopsies are a minimally invasive procedure that involve removing a small amount of tissue with a needle.

What are biopsies used for?

When suspicious tissue is first detected, a physician will often use imaging tests. These tests try to determine if the tissue is benign/non-cancerous or malignant/cancerous. Biopsies often become necessary to confirm diagnoses or when imaging tests are inconclusive.

As biopsies are used to examine tissue for disease, they are often associated with cancer diagnoses. Biopsies can also examine tissue for autoimmune and inflammatory diseases and disorders. Additionally, they can determine infections. Nearly any organ in the human body can be biopsied. Biopsies are commonly used to examine tissue from the abdomen, bone, bone marrow, breast, uterus, kidney, liver, lung or chest, lymph nodes, muscles, nerves, skin, testicles and thyroid.

How are biopsies performed?

There are three main methods of biopsies: fine needle aspiration, core needle biopsy and vacuum assisted biopsy. The type of biopsy used depends largely on the part of the body. Your interventional radiology specialist will discuss with you the type of biopsy that is best for your particular situation.

In a fine needle aspiration, a fine gauge needle and syringe withdraws a cluster of cells or fluid.

In a core needle biopsy, an automated mechanism fills a needle trough with a ‘core’ of tissue. This process may occur more than once.

In a vacuum-assisted biopsy, a needle goes into the suspicious tissue. A vacuum device is activated, pulling tissue into a needle. This process may also occur more than once.

Biopsies are typically a minimally invasive procedure. Although, your healthcare team may opt to remove the entire lump surgically. Surgery may also be necessary if the suspicious tissue is in an area of the body that is difficult to reach using a minimally invasive method.

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