1678 A Rare Example of a Simple Bone Cyst of The Ascending Ramus in A Paediatric Patient

Abstract A simple bone cyst is described as an intra-osseous pseudocyst, devoid of epithelial lining and either empty filled with serous or sanguineous fluid. This case presents a rare example the ascending ramus mandible in paediatric patient. Studies have shown that less than 5% cysts jaw bones are located within mandibular ramus, most common site being premolar-molar region (75%). The 14-year-old female was referred by her orthodontist to local Oral Maxillofacial department, for incidental finding on pre-orthodontic OPT radiolucency left ramus. Her medical history clear, she asymptomatic had no sensory deficit. CT scan demonstrated 22mm multilocular centred extending superiorly up base coronoid process condylar neck. Inferiorly, abutted but did not involve unerupted third molar. highlighted thinning buccal lingual cortices putting patient at risk pathological fracture. inferior alveolar nerve canal passed through aspect radiolucency. underwent exploration which revealed bony cavity, cystic contents. definitive diagnosis established. She experienced satisfactory healing review appointment 4 weeks post-surgery. Combined radiographic clinical assessment important cysts.