Fig. 4From: Primary Ewing’s sarcoma/primitive neuroectodermal tumor of the ileum: case report of a 16-year-old Chinese female and literature reviewDual color (red/green) break-apart probe FISH test of the tumor. a Normal karyotype cells have two yellow (red/green merged) signals (arrowheads). b Most tumor cells (90%) had one yellow (red/green merged) signal and one red signal (arrows). C. Consecutive sections were HE-stainedBack to article page