Lung needle biopsy Health Article

Definition

A lung needle biopsy is a method to remove a piece of lung tissue for examination.

Alternative Names

Transthoracic needle aspiration; Percutaneous needle aspiration

How the test is performed

A chest x-ray or chest CT scan may be used to locate the precise spot of the biopsy. If the biopsy is done using a CT scan, you may be lying down during the exam.

A needle biopsy of the lung may also be performed during bronchoscopy or mediastinoscopy.

You sit with your arms resting forward on a table. You should try to keep still and not cough during the biopsy. The doctor will ask you to hold your breath. The skin is scrubbed and a local anesthetic is injected.

The surgeon will make a small (about 1/8-inch) cut in the skin, and will insert the biopsy needle into the abnormal tissue, tumor, or lung tissue. A small piece of tissue is removed with the needle and sent to a laboratory for examination.

When done, pressure is placed over the site. Once bleeding has stopped, a bandage is applied.

A chest x-ray is taken immediately after the biopsy.

The procedure usually takes 30 - 60 minutes. Laboratory analysis usually takes a few days.

How to prepare for the test

Before a needle biopsy of the lung is conducted, a chest x-ray or chest CT scan may be performed. Sometimes, you will be given a mild sedative before the biopsy. You must sign a consent form. It is important to remain as still as possible for the biopsy and to avoid coughing.

How the test will feel

A lung needle biopsy is preceded by a local injection of anesthetic, which will sting for a moment. You will feel pressure and a brief, sharp pain when the needle touches the lung.