Calcifying epithelial odontogenic tumours in three cats and a dog

Neoplasms histologically similar to calcifying epithelial odontogenic tumour (CEOT) of man are described in three cats and a dog. The diagnostic features of these neoplasms are their occurrence in the jaw and the histological appearance of cords of epithelial cells, amyloid spherules and foci of calcification. The histogenesis and behaviour of the tumour are discussed.