Fig. 2From: Synovial sarcoma of the tibial nerve - case report of a rare tumor in a rare location requiring early diagnosisA Histological evidence of a spindle cell mesenchymal affection consisting of cells in poorly defined fascicles, with variably collagenized stroma. B Uniform appearance of the cells, with nuclei with fine chromatin, small nucleoli, without significant cytological atypia, with well-identifiable mitotic activity (mitosis indicated by an arrow). C Positivity in the epithelial membrane antigen test. D Single positivity in the detection of cytokeratin AE1/3Back to article page