Hematoxylin and eosin and S-100 staining of the tumors of the thigh treated surgically in 1990 (A, B), recurrent tumor operated in 1995 (C, D) and metastatic tumor in heart (E, F) and lung (G, H) at autopsy in 2007. A, C, E, G: Hematoxylin and eosin staining; B, D, F, H: S-100 immunohistochemistry. Histological factors such as cellularity, degree of nuclear atypia, mitotic counts, and S-100 immunoreactivity were similar among the specimens.
Kitamura et al. Diagnostic Pathology 2010 5:2 doi:10.1186/1746-1596-5-2