Variability of lung tumor measurements on repeat computed tomography scans taken within 15 minutes
Carcinoma, Non-Small-Cell Lung
Tomography, X-Ray Computed
Apparent changes in tumor diameter exceeding 1 to 2 mm are common on immediate reimaging. Increases and decreases less than 10% can be a result of the inherent variability of reimaging. Caution should be exercised in interpreting the significance of small changes in lesion size in the care of individual patients and in the interpretation of clinical trial results.