Figure 4From: A spindle cell carcinoma presenting with osseous metaplasia in the gingiva: a case report with immunohistochemical analysis Histological findings. (a) The cancer cells were composed of spindle cell component and epithelial component. (b) Transition of spindle cells into epithelial component was observed. (c) Conventional squamous cell carcinoma components presenting with keratinization were also observed. (d) Spatters of calcified materials with bone-like appearance were observed.Back to article page