The present paper reports two cases of calcifying odontogenic eyst, including a review of previously reported cases of the lesion in Japan.
Case 1: A 24-year-old woman had a painless swelling in the right maxillary incisor region. The radiographic examination showed an ovoid radiolucent area containing several small radiopaque spots. The lesion was enucleated. Histopathological findings from the specimens showed the presence of ghost cells and calcified tissues in the connective tissue around the cyst wall. The patient had an uneventful postoperative course and the follow-up radiographs were not available for study.
Case 2: A 32-year-old man was referred complaining a mental mandibular swelling which had been present for one year. The radiographic examination showed two cystic radiolucent area from the right incisor to the left second premolar area, and tooth-like appearance could be found in the left one. These cysts were enucleated and HAP was consolidated into the bone defect occurred postoperatively. Histopathological findings revealed that the epithelium of the right side cyst contained ghost cells, calcified tissues, and foreign body giant cells. The left one was complex odontoma. Postoperative courses were uneventful and no relapse was found.