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CT showing reduction in metastatic LNs after radiotherapy. (a,b) Paraaortic LNs. (c) Right renal hilum LN. The upper row shows LNs at 16 months after surgery (before radiotherapy); the lower row shows LNs at 18 months after surgery (after radiotherapy). The red line outlines the circumference of target lesions.
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CT 2 months after the initiation of RT showed reduction of the irradiated lesion from 51 to 8 mm as well as reduction of some non-irradiated LNs, such as two paraaortic LNs (#1: 30-24 mm, #2: 28-13 mm) and the right renal hilar LN (16-7 mm) (Fig. 1).
Clinical treatment course.
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Therefore, additional RT doses were administered to the aortic LN #1 and tumor shrinkage was observed (from 50 to 30 mm), while the other lesions remained stable (Fig. 2).