A cystic variant of calcifying epithelial odontogenic tumour

The cystic variant of calcifying epithelial odontogenic tumour is a rare lesion. The present study describes a case of cystic CEOT in a 35-year-old male patient, with a well-defined mixed radiolucent-radiopaque lesion, located in the posterior region of the maxilla. The lesion was associated with an absent right upper second molar. Histopathological examination revealed nests and cords of eosinophilic polyhedral epithelial cells, moderately pleomorphic and surrounded by fibromyxoid stroma, the presence of amyloid material, concentric rings of Liesegang and the presence of prominent intercellular bridges, and areas of calcification in the fibrous capsule of a cystic lesion. The lesion was decompressed to decrease its size to be removed more safely through enucleation and peripheral ostectomy, avoiding damage to fine structures. The approach adopted proved to be effective and safe as a form of treatment for cystic CEOT.

Automated summary

This study describes a rare case of cystic calcifying epithelial odontogenic tumor (CEOT). The tumor presented as a mixed radiolucent-radiopaque lesion in the posterior region of the maxilla, accompanied by a missing upper second molar. Histopathological examination revealed calcification in the fibrous capsule of the cystic lesion, as well as other characteristic features.