Fig. 10

A 57-year-old female with metastatic melanoma from anorectal primary on treatment with ipilimumab. a Axial contrast-enhanced CT image before the start of chemotherapy shows a large heterogeneous paracardiac mediastinal mass (arrow). b Axial contrast-enhanced CT image 1 month after the start of treatment shows an increase in the size of the mass, however with a decrease in enhancement (arrow). c Axial contrast-enhanced CT image 1 month after completion of treatment shows a decrease in the size and enhancement of the mass (arrow)