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Calcifying odontogenic cyst. Range, variations and neoplastic potential

F Praetorius, E Hjørting-Hansen, R J Gorlin

    Acta Odontologica Scandinavica
    |January 1, 1981
    PubMed
    Summary

    Calcifying odontogenic cysts (C.O.C.) are reevaluated, revealing two distinct entities: a cyst with three variants and a neoplasm. This study differentiates these jaw lesions for better diagnosis and treatment.

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    Area of Science:

    • Oral pathology
    • Odontogenic lesions
    • Head and neck neoplasms

    Background:

    • Calcifying odontogenic cysts (C.O.C.) represent a group of lesions with varied clinical and histopathological presentations.
    • Previous classifications have not fully distinguished between cystic and neoplastic entities within this group.
    • Accurate differentiation is crucial for appropriate management and prognosis.

    Purpose of the Study:

    • To reevaluate 16 cases of calcifying odontogenic cysts (C.O.C.).
    • To differentiate between cystic and neoplastic entities within the studied group.
    • To characterize the variants of C.O.C. and propose a new term for the neoplastic counterpart.

    Main Methods:

    • Histopathological reevaluation of 16 previously diagnosed cases of C.O.C.

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  • Analysis of clinical presentation, radiographic features, and microscopic findings.
  • Comparison of features to differentiate cystic and neoplastic lesions.

    • Main Results:

    • The study identified two distinct entities: a calcifying odontogenic cyst (C.O.C.) and a neoplasm.
    • The C.O.C. presented in three variants: simple, odontoma-producing, and ameloblastoma-like proliferation.
    • The neoplastic entity, characterized by ameloblastoma-like epithelium with ghost cells and dentinoid formation, is proposed to be termed "Dentinogenic ghost cell tumour".

    Conclusions:

    • Calcifying odontogenic cysts (C.O.C.) encompass distinct cystic and neoplastic lesions.
    • Recognition of the three C.O.C. variants and the "Dentinogenic ghost cell tumour" is essential for accurate diagnosis.
    • The neoplastic variant may require more radical surgical intervention due to infiltrative growth and potential recurrence.