Fig. 1.

Histologic features of ameloblastomas analyzed in this study. a Follicular ameloblastoma showing tumor islands with peripheral columnar cells and stellate reticulum-like cells (H&E, magnification ×100). b Plexiform ameloblastoma showing long anatomizing cords of ameloblastic epithelium (H&E, magnification ×100). c Intraluminal unicystic ameloblastoma lined by ameloblastic epithelium with luminal projections, no evidence of stromal invasion (H&E, magnification ×100). d Peripheral ameloblastoma showing tumor islands just underneath the oral mucosal epithelium (H&E, magnification ×100)