Incidental Metastatic Melanoma Identified on 18F-FDOPA PET/CT With Confirmation by Histology.

A 47-year-old woman with a history of surgically treated abdominal paraganglioma and left thigh melanoma underwent an F-FDOPA PET/CT for suspected locoregional recurrence of paraganglioma. F-FDOPA PET/CT disconfirmed this recurrence but revealed 2 FDOPA-avid left inguinal lymph nodes, confirmed on a subsequent F-FDG PET/CT. Excision and pathology characterized these lymph nodes as melanoma metastases.

Efficacy of late concurrent hypofractionated radiotherapy in advanced melanoma patients failing anti-PD-1 monotherapy.

Advanced melanoma patients who failed anti-PD-1 therapy have limited options. We analyzed a cohort of 133 advanced melanoma patients receiving anti-PD-1 monotherapy in a referral center between April 2015 and December 2017, and included the 26 patients with confirmed progressive (PD) or stable disease who received additional radiotherapy with an unmodified anti-PD-1 mAb regimen. Tumor evaluations were done on radiated and nonradiated (RECIST 1.