Squamous odontogenic tumor. Report of a case with lesions in three quadrants.

Squamous odontogenic tumor is a rare, benign, odontogenic lesion. We are presenting the twenty-second case to be reported in the literature and only the fifth case with multiple quadrant lesions. This is the first description of reconstruction with autologous and homologous bone grafts of a discontinuity defect of the mandible resulting from en bloc resection of a squamous odontogenic tumor. Emphasis is placed on the need to consider this rare tumor in the differential diagnosis of ameloblastoma. The correct diagnosis significantly changes the extent of the surgical procedure and may avoid unnecessary morbidity.