Pure Ground Glass Opacity -Potential for Overdiagnosis?

An active and healthy non-smoking 75 year old woman was referred to a regular chest x-ray because of unintentional weight loss over time. Chest x ray (Figure 1) showed diffuse consolidation in the right lower lobe, and the patient was referred to a Computerized Tomography (CT) scan of thorax (Figure 2) within the next month. CT scan showed a 15 x 13 mm indeterminate ground glass opacity lesion in the right lower lobe. Because of possible malignant outcome, the patient was referred to CT guided lung biopsy (Figure 3). During the biopsy, the patient development a right sided pneumothorax which regressed after treatment with surgical tube.