Stereotactic Body Radiotherapy for Metachronous Multisite Oligo-Recurrence: A Long-Surviving Case with Sequential Oligo-Recurrence in Four Different Organs Treated Using Locally Radical Radiotherapy and a Review of the Literature
(a) CT of the left lung metastasis (arrow) before SBRT. (b) Dose distribution made with 10 noncoplanar beams for SBRT. The isodose lines shows total doses (in 4 fractions) of 50 Gy, 40 Gy, and 30 Gy, respectively, from innermost area. (c) CT at 2 years after SBRT, showing partial response of the lesion (arrow) with focal radiation fibrosis.