Skip to Content
UW Health SMPH
American Family Children's Hospital
SHARE TEXT

Transthoracic Needle Aspiration (TTNA)

A transthoracic needle aspiration (TTNA) is done to check if a growth in the lung is cancer. This abnormal growth, called a solitary pulmonary nodule (SPN), may be found during a chest X-ray or CT scan.

TTNA uses a long needle inserted through the chest wall between the ribs to take a tissue sample (biopsy). The needle usually is guided to the right spot in the lung with the help of a CT scan. A pathologist checks the sample under a microscope to see if it is cancer.

Last Revised: September 12, 2012

Author: Healthwise Staff

Medical Review: E. Gregory Thompson, MD - Internal Medicine & Michael Seth Rabin, MD - Medical Oncology

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.

© 1995-2014 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.