Aneurysmal Bone Cyst of Mandible: A Case Report and Review of Literature

Abstract

An aneurysmal bone cyst is a rare benign expanding osteolytic lesion of bone characterized by replacement with fibro-osseous tissue containing blood filled sinusoidal or cavernous spaces of variable size. Aneurysmal bone cyst are infrequent in craniofacial skeleton and among all cystic lesions that can be found in maxilla and mandible it is rare, most commonly found in long bones and vertebral column. The development of aneurysmal bone cyst is related to history of trauma and subperiosteal hematoma formation. In this article we present a case of 40-year-old female patient with an aneurysmal bone cyst involving right angle and ramus of mandible. Computed Tomography of mandible revealed a well-defined expansile lesion in the region of the angle and ramus of right hemi mandible with thinning of bony cortex and diagnosis was confirmed by histopathological examination. In our patient, en block (The resection of large bulky tumor virtually without dissection) resection allowed complete removal of the lesion and reconstruction plate was placed for rehabilitation. We have focused on differential diagnosis of lesions that are found at this location and histopathological examination remains the Gold Standard in confirmatory diagnosis of such lesions.