Aggressive dentigerous cyst in the maxillary sinus, originating from an ectopically erupted maxillary third molar

Sinonasal Ameloblastoma: A Case Report and a Review of Gnathic Lesions That Occur in the Sinonasal Tract

“…They commonly occur in men in the second to fourth decade and arise in association with the third molars and canines. 34 Dentigerous cysts can also occur at the sites of impacted teeth and rarely with ectopic teeth. 35 Radiographically, DCs are unilocular radiolucencies with a sclerotic border and an associated tooth.…”

“…35 Radiographically, DCs are unilocular radiolucencies with a sclerotic border and an associated tooth. 35 Sinonasal DCs are typically associated with ectopic or impacted molars involving the maxillary sinus 34,36 and rarely canines. 37 Dentigerous cysts can become infected, regardless of site, and appear aggressive and on imaging mimic a malignancy.…”

“…37 Dentigerous cysts can become infected, regardless of site, and appear aggressive and on imaging mimic a malignancy. 34 Inflamed DCs comprised hyperplastic nonkeratinizing epithelium with occasional associated rete ridges and chronic inflammation. Cholesterol granulomas, dystrophic calcifications, and small inactive odontogenic rests can also be identified.…”

“…Dentigerous cysts (DCs) are the most common type of odontogenic cyst and arise from developing unerupted teeth. They commonly occur in men in the second to fourth decade and arise in association with the third molars and canines 34 . Dentigerous cysts can also occur at the sites of impacted teeth and rarely with ectopic teeth 35 .…”

“…Sinonasal DCs are typically associated with ectopic or impacted molars involving the maxillary sinus 34,36 and rarely canines 37 . Dentigerous cysts can become infected, regardless of site, and appear aggressive and on imaging mimic a malignancy 34 . Inflamed DCs comprised hyperplastic nonkeratinizing epithelium with occasional associated rete ridges and chronic inflammation.…”