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[Dental-radicular cysts invading the maxillary sinus]

A Silvestre, D Soulié, P Rizzoli

    Journal De Radiologie
    |June 1, 1995
    PubMed
    Summary

    Radicular cysts can invade the maxillary sinus, causing opacity. Identifying a thin, lifted cortical bone rim and water-like attenuation values on CT scans suggests this condition, guiding surgical approaches.

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    Area of Science:

    • Dentistry
    • Oral and Maxillofacial Surgery
    • Radiology

    Background:

    • Radicular cysts, often arising from dental infections, can extend into adjacent anatomical structures.
    • Maxillary sinus involvement by radicular cysts presents diagnostic challenges, potentially mimicking other pathologies.
    • Accurate diagnosis is crucial for appropriate treatment planning and patient outcomes.

    Observation:

    • Three cases are presented where radicular cysts developed within the maxillary sinus, leading to partial or complete sinus obscuration.
    • Radiological examination, specifically computed tomography (CT), is key for identifying these cysts.
    • A characteristic finding is a thin rim of elevated cortical bone, representing the displaced floor of the maxillary sinus.

    Findings:

    • Maxillary sinus opacity on imaging necessitates evaluation for an underlying radicular cyst.

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  • The presence of a thin, lifted cortical bone rim is a significant indicator of cyst expansion into the sinus.
  • Intrasinusal processes with attenuation values similar to water on CT scans strongly suggest a radicular cyst.

    • Implications:

    • Early and accurate diagnosis of radicular cysts invading the maxillary sinus is essential for effective management.
    • The described radiological signs aid in differentiating radicular cysts from other sinus pathologies.
    • Identifying these signs may favor an intraoral surgical approach for cyst removal.