Fig. 4From: Intraosseous synovial sarcoma of the distal ulna: a case report and review of the literatureHistopathological appearance of the tumor. The specimen was composed of fascicles of spindle cells in a palisading pattern. Most of the lesion showed less aggressive pattern (the left side of a.); however, there was an area that showed partial high cellularity and nuclear atypia (the right side of a, b). Histologic features and immunohistochemistry results suggested a synovial sarcoma. Original magnification; a. × 100, b. × 400Back to article page