INTRODUCTION Osteosarcoma is a malignant mesenchymal tumor whose cancerous cells produce osteoid matrix. It is a common primary malignant bone tumor, representing 23% of total head and neck malignancies. Osteosarcomas of the jaws are rare lesions, representing only 4-7% of all osteosarcomas. This presentation discusses the clinical, radiographical, and histopathological features of a case of os...

The paper presents the clinical case of a 14-y.old female patient complaining on omalgia, in whom a focus of osteoid osteoma was diagnosed, localized in the acromion. The lesion was removed using the arthroscopic technique, achieving a complete disappearance of ailment.

We have described a benign osteoblastic lesion in the right temporal bone in a 26 year-old girl who presented with a swell mass on the right supra-auricular area and tinnitus of 17 years duration. She had been operated conservatively through middle cranial fossa approach 17 years ago. After that time the patient has had no problem. There was no other developed neurologic deficit or evidence of ...