Fig. 2.

Illustrations of a patient in the primary group who achieved in-field PR but showed progression of lung metastasis. (A) The pretreatment computed tomography (CT) scan shows a huge mass invading the right portal vein. Small metastatic nodules are seen in both lungs (arrows). (B) Axial dose distribution of 3-D conformal radiotherapy (RT), and (C) 1 month after completion of RT, a follow-up abdomen CT scan shows a decrease in size in the target lesion, but a chest CT scan shows new metastatic nodules in both lungs (arrows). PR, partial response.