Fig. 2From: Low-grade central fibroblastic osteosarcoma may be differentiated from its mimicker desmoplastic fibroma by genetic analysisHistology, karyotype and beta-catenin nuclear expression in DF. a Histology showing a fibroblastic tumor with little or no nuclear atypia or mitotic activity (H&E, original magnification × 200). As such, the histology of DF resembles that DF-LGCOS shown in Fig. 4a. b DF karyotype: 47,XX,+8[2]/46,XX[18]. c IHC expression of beta-catenin in several tumor cell nuclei of DF (original magnification × 400)Back to article page