What is the accuracy of PET scanning in detecting secondary lung tumors?

Updated: Feb 08, 2019
  • Author: Daniel S Schwartz, MD, MBA, FACS; Chief Editor: John Geibel, MD, DSc, MSc, AGAF  more...
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Answer

In a study of 138 patients with hepatocellular carcinoma, Lee et al found that FDG-18 PET and CT together were extremely useful in detecting lung metastases larger than 1 cm, as well as bone metastases. PET had a 92.3% detection rate for secondary pulmonary nodules of 1 cm or greater, but only a 20% detection rate for lung metastases smaller than 1 cm. [17]

The investigators also found that chest CT was significantly more accurate than PET in detecting lung metastases and that PET was significantly more accurate than bone scanning in detecting bone metastases.


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