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A-B, Indolent lesion growth. A, A 79-year-old woman with subsolid right upper lobe opacity, which demonstrated little interval change on successive examinations. B, Baseline image, as opposed to immediate prior exams, better demonstrated the change in lesion size, density, and morphology, as evidenced in this follow-up image 15 years later. This was a primary lung adenocarcinoma.
