Purpose: To describe the characteristic CT findings of ameloblastomas in the mandibleand maxilla . Materials and Methods: CT findings of 11 patients with ameloblastoma(9 cases in the mandible and 2 cases in the maxilla} proved by excisional biopsy were evaluated retrospectively with regard to the location , size, multilocularity, solid and cystic component , cortical destruction , soft tissue i...

Cholesterol granuloma (CG) of the petrous apex is an inflammatory reaction to the by-products of eroded marrow cavities secondary to chronic obstruction of air cells within the petrous pyramid. We report a case of cholesterol granuloma in the left petrous bone occurring in a 28-year-old woman with an unusual presentation. The woman presented with a 6-month history of intermittent left hemicrani...

BACKGROUND Fibrous dysplasia (FD) is a developmental disease of bone in which there is replacement of normal spongiosa and filling of the medullary cavity of affected bones by an abnormal fibrous tissue that contains trabeculae of poorly calcified primitive bone formed by osseous metaplasia. Fibrous dysplasia is a common benign bone disease existing in monostotic and polyostotic forms. It is so...

Primary malignant vascular tumors which constitute less than 1% of the primary bone tumors are very rarely encountered. Epithelioid angiosarcoma is a very uncommon subtype of angiosarcomas presenting with an epithelioid phenotype and mimicking carcinomas clinically. These tumors select mostly extra-skeletal locations but rarely bones as their medium. A 31-year-old male patient applied to our cl...

Hemangioendothelioma is borderline or intermediate type of vascular neoplasm. Hemangioendothelioma is rare lesion that constitutes less than 0.5% of the malignant tumors of bone. We present a case of low-grade hemagioendothelioma of the skull in a 29-yr-old woman. She had pain, diplopia and exophthalmos of the left eye. Radiographic images showed a relatively well-demarcated, expansile osteolyt...

INTRODUCTION: Osteolysis adjacent to the acetabular component of hip prostheses remains the most challenging complication of total hip arthroplasty in the medium to long-term. This loss of bone can cause the prosthesis to lose fixation and, when severe enough, can lead to fracture of the pelvis. Therefore, knowledge of how osteolysis develops and progresses is important in order to develop opti...

simple bone cysts are usual, benign, fluid-filled, cystic lesions that often occur in the metaphysis of the long bones and are rarely detected in vertebrae. a case of a simple bone cyst in the body of the fifth lumbar vertebra in a 28-year-old woman with complaint of intermittent low back pain is described. according to the radiologic findings, the lesion was detected as a simple bone cyst, and...

in spite of very high sensitivity, bone scan is quite nonspecific in evaluation of bony lesions. in interpretation of bone scan special attention to patient’s clinical presentation and correlation with other lab and imaging modalities should be paid. in this report a patient with erdheim chester disease a rare and unusual form of lipidosis is presented and the pattern of 99mtc-mdp bone scan and...

petrous apex lesions of temporal bone progress slowly. most of the time not only destruct this area but also involve neighbouring element. the symptoms of the neighbouring neuro-vasculare involvement we can recognize these lesions. the most common symptoms of involvement of the petrous apex are: headache, conductive hearing loss or sensorineural type, paresthesia and anesthesia of the trigemina...