Nodule Growth Rate

Figure 1. Nodule Doubling Times

Frontal chest radiograph shows a nodule in the right lower lobe, measuring 1.9 cm.

Figure 2. Nodule Doubling Times

Frontal chest radiograph obtained 160 days after the radiograph above shows that the nodule has increased in size to 3 cm. Calculations reveal that this growth rate represents a doubling time of 80 days (within the potentially malignant range).

Metastasis from a colon carcinoma was found at biopsy.

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