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What is a transthoracic needle aspiration (TTNA) biopsy for a solitary pulmonary nodule (SPN)?

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This type of biopsy is used if the lesion is not easily accessible on the airway wall or is smaller than 2 cm in diameter. If the SPN is on the periphery of the lung, a biopsy sample has to be taken with the help of a needle inserted through the chest wall and into the SPN. It is usually performed with CT guidance. With SPNs larger than 2 cm in diameter, the diagnostic accuracy is higher (90%-95%). However, the accuracy decreases (60%-80%) in nodules that are smaller than 2 cm in diameter.

From: Solitary Pulmonary Nodule WebMD Medical Reference

SOURCE: Solitary Pulmonary Nodule from eMedicineHealth. American Lung Association: "Lung Cancer Fact Sheet." UpToDate: "Diagnostic evaluation of the incidental pulmonary nodule." CDC: "Nocardiosis."

Reviewed by Melinda Ratini on November 21, 2017

SOURCE: Solitary Pulmonary Nodule from eMedicineHealth. American Lung Association: "Lung Cancer Fact Sheet." UpToDate: "Diagnostic evaluation of the incidental pulmonary nodule." CDC: "Nocardiosis."

Reviewed by Melinda Ratini on November 21, 2017

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What is a video-assisted thoracoscopy (VATS) for a solitary pulmonary nodule (SPN)?

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