Cyst wall partially lined by non-keratinizing squamous epithelium with dense infiltration of wall by lymphocytes, plasma cells and macrophages. No evidence of specific granulomas. No evidence of malignancy.
Cystic lesion associated with an impacted tooth in the left maxilla, located between the canine and premolar region adjacent to the maxillary sinus.
Soft tissue and bone fragments collectively measured 1.7x1.3x0.7 cm, totally embedded.
Lt. Maxillary Lesion, biopsy: