[Odontogenic cysts--histogenesis, histology, potential for possible neoplastic transformation]

Epithelial odontogenic cyst develop either in result od peridental inflammation-radicular cyst, or in result of developmental disturbances in the course of the odontogenesis. The latter are divided into primordial and dentigerous cysts. Some odontogenic cysts are lined with squamous keratotic epithelium -ortho- or parakeratotic type. The latter is characterized by higher recurrence rate and malignant potential. Primary intraosseous carcinoma (PIOC) both keratizing and nonkeratizing might originate in keratocyst. Mucoepidermoid carcinoma and occasionally other benign and malignant sialogenic tumors might originate in keratocyst either. In addition in the jaw-bones with the odontogenic cyst or even without the cyst, squamous odontogenic tumor (SOT) can develop or so-called squamous odontogenic tumor-like proliferation in odontogenic cyst (SOT-LPOC). PIOC is a cancer of low grade malignant potential. Biology of SOT and SOT-LPOC in not elucidated yet as these are not frequently occurred lesion.