No abstract

An odontogenic keratocyst that eroded into the sinus through the maxillary bone and occupied it, showed replacement of the sinus respiratory epithelium by lesional epithelium, and was associated with fungal rhinosinusitis is presented. A review of the literature disclosed that epithelial replacement has been described in 2 previous case reports, although there is no report on the coexistence of odontogenic keratocyst with fungal rhinosinusitis.

Complete conservative surgical excision of this lesion has a very good prognosis. Surgical augmentation of the sharp edentulous mandibular ridges might be needed to avoid continuous irritation and possible recurrence.