PMC7675887_01
PMC7675887_02
An axial (left) and sagittal (right) dose distribution of the proton beam
radiotherapy plan.
10.1177_2036361320971943-fig1.jpg
PMC7675887_02_10.1177_2036361320971943-fig1.jpg
fig1-2036361320971943
After receiving 3780 cGy of out of a planned course of 5940 cGy in 180 cGy fractions with proton beam radiotherapy (Figure 1), the patient was found to have innumerable small, low-attenuation masses in the liver, concerning for metastatic disease; biopsy of a liver mass confirmed metastatic melanoma.