Type | Elzay(1982)[32] | Slootweg & Müller(1984)[33] | Kruse et al.(2009) |
---|---|---|---|
1 | Arising from an odontogenic cyst | Primary intraosseous carcinoma ex odontogenic cyst | Malignant ameloblastoma |
1a | - | - | Metastase with features of an ameloblastoma (well differentiated) |
1b | - | - | Metastase with malignant features (poorly differentiated) |
2 | Arising from an ameloblastoma | Ameloblastic carcinoma arising from an ameloblastoma | |
2a | Well differentiated (malignant ameloblastoma) | Malignant ameloblastoma | Without metastase |
2b | Poorly differentiated (ameloblastic carcinoma) | Ameloblastic carcinoma, arising de novo, ex ameloblastoma or ex odontogenic cyst | Metastase with features of an ameloblastoma (well differentiated) |
2c | Metastase with malignant features (poorly differentiated) | ||
3 | Arising de novo | Primary intraosseous carcinoma de novo | Ameloblastic carcinoma with unknown origin histology |
3a | No keratinizing | No keratinizing | Without metastase |
3b | Keratinizing | Keratinizing | Metastase with features of an ameloblastoma (well differentiated) |
3c | Metastase with malignant features (poorly differentiated) |