Figure 13.

A-C, Fluorine-18 fluorodeoxyglucose (FDG)-PET scanning. Axial (A) and coronal (B) unenhanced CT scan images from a routine surveillance scan in a 70-year-old woman without symptoms with a history of breast cancer and long-term nitrofurantoin use show irregular, solid lung nodules in both lower lobes. C, FDG-PET scanning was performed because of concern for metastatic disease, and an axial FDG-PET image shows the left lower lobe (LLL) nodules (arrows in B and C) to be FDG avid. Core transthoracic needle biopsy results for the LLL nodule were consistent with organizing pneumonia.