Fig. 4From: Primary clear cell sarcoma of the femur: a unique case with RT-PCR and direct sequencing confirmation of EWSR1/ATF1 fusion geneHistological examination of the biopsy specimen reveals cell proliferation in oval or rounded cells. Images show hematoxylin and eosin staining. The tumors consist of fascicles and compact nests with frequent deposits of brown pigment. Magnification: 200 ×Back to article page