ABSTRACT
Aneurysmal bone cysts are rare benign lesions of bone tissue, infrequent in the craniofacial skeleton about other structures like long bones or the spine. The rare jaw lesions encountered in the mandible and maxilla. On the other side, it is at the same time very exciting in terms of its differential diagnosis with other types of mandibular or maxillary bone lesions. We present the case of a 45-year-old female patient with an aneurysmatic cyst located at the left angle of the mandible describing the treatment for the same i.e. surgical excision and hemi mandibulectomy with reconstruction. We have focused on the differential diagnosis, mainly with the malignancies, which can be found at this location, along with therapeutic options classically described for these kinds of pathologies. In our patient, the surgical excision and hemi mandibulectomy allowed a complete removal of the lesion and recon plate was placed for rehabilitation.