A Case of COL1A1-PDGFB Fusion Uterine Sarcoma.

COL1A1-PDGFB gene fusion uterine sarcoma is a recently described entity which shows some overlapping features with dermatofibrosarcoma protuberans. To date, only 4 cases have been reported in the literature. Due to its rarity, succinct clinicopathologic characteristics are yet to be established. We report a fifth case initially mistaken as a uterine fibroid which histologically proved to be a CD34 + high-grade spindle cell proliferation which on fluorescence in situ hybridization analysis displayed COL1A1-PDGFB gene rearrangement. With this case description we hope to raise awareness and aid in the characterization of this emerging entity.