Fig. 5.From: Giant peripheral ossifying fibroma with coincidental squamous cell carcinoma: a case reportHistopathological findings (hematoxylin–eosin stain). The biopsy specimen was composed of dysplastic spindle-shaped epithelia (arrows) and stromal tissue. Some ossification (arrow head) and cancerous pearl formation (asterisk) are observed. High-magnification view of stromal tissue revealed spindle-shaped stromal cells with collagenous fiber (lower right figure)Back to article page