Cyst wall partially lined by non-keratinizing squamous epithelium with focal mild infiltration of wall by lymphocytes, plasma cells and macrophages. Unremarkable bone trabeculae are also seen. No evidence of specific granulomas. No evidence of malignancy.
Radiolucent cystic lesion located in the midline of the mandible, extending from the 4 to 6 tooth region.
Soft tissue and bone fragments collectively measured 2.5x2.3x1 cm, totally embedded.
Central mandibular cystic lesion, excision biopsy: