Dermatofibrosarcoma protuberans with 46,XY,t(X;7) abnormality in a child

A 9-year-old child with dermatofibrosarcoma protuberans demonstrated a balanced translocation, 46,XX,t(X;7)(q21.2;q11.2), in the untreated tumor, an abnormality not previously reported. Unlike seven of eight other reports of dermatofibrosarcoma protuberans, no ring chromosomes were present.