Fig. 3
From: Recurrent mandibular ameloblastoma in soft tissue and rib graft 17 years after initial presentation
Microscopic examination of the surgical specimens. a Right cheek ameloblastoma. Tumoural proliferation with a follicular growth pattern of tumour islands with cystic changes and fibrous stroma. H&E × 4. b The tumour islands show peripheral palisading of basal columnar hyperchromatic cells with the nuclei displaced away from the basement membrane and central stellate reticulum-like cells. Detected cystic changes are also seen. H&E × 20. c Tumour islands with peripheral palisading and cystic changes. Areas of squamous metaplasia and keratinization are also seen (acanthomatous ameloblastoma). H&E × 20