Large, expansile odontogenic cyst with bilateral maxillary sinus involvement

Area of Science:

• Oral and Maxillofacial Surgery
• Radiology
• Pathology

Background:

• Residual cysts are frequent odontogenic lesions found in the jaws.
• These cysts typically occur in tooth-bearing areas.
• Large or unusually located cysts can present diagnostic challenges.

Purpose of the Study:

• To report a rare case of an unusually large residual cyst.
• To highlight the diagnostic utility of advanced imaging for complex jaw lesions.
• To discuss the differential diagnosis of odontogenic lesions.

Main Methods:

• Case presentation of a large residual cyst.
• Diagnostic imaging included panoramic radiography and CT scan.
• Histopathological examination via biopsy was performed.

Main Results:

• The residual cyst was significantly large, crossing the maxillary midline.
• It extended into portions of the maxillary sinuses.
• Differential diagnoses included other odontogenic cysts and benign tumors.

Conclusions:

• Advanced imaging modalities are invaluable for assessing the full extent of jaw lesions.
• Comprehensive visualization is necessary, exceeding standard intraoral and panoramic views.
• Accurate diagnosis of large residual cysts requires integrated imaging and biopsy findings.