Figure 3

Time-lapse computer tomography (CT) imaging of the chest of the patient with thymoma. (A) Initial CT scan of the chest prior to targeted three-dimensional intensity modulated radiation therapy and image-guided radiation therapy (IMRT/IGRT) demonstrated a 3.7 x 3.0-cm anterior mediastinal mass. (B) The CT scan of the chest 5 years after post-operative chemotherapy and targeted three-dimensional IMRT/IGRT shows that the localized soft tissue thickening at the left upper lung anterior pleural space has resolved. (C) The CT scan of the chest 7 years after post-operative chemotherapy and targeted three-dimensional IMRT/IGRT shows that there is a moderate dependent pleural thickening at the left lung base. There is complete left lung atelectasis, but the previously seen pleural disease had resolved.