In a prospective study of 54 patients with lung cancer,
positron emission tomography and chest CT were used to evaluate 168
mediastinal lymph nodes of various sizes in 72 nodal stations. Invasive
surgery was then used to document the accuracy of these two tests.
Combining the three size groups overall, the sensitivity, specificity,
and accuracy of positron emission tomography for staging mediastinal
lymph nodes was 96, 93, and 94%, as compared to 68, 65, and 66% with