Aneurysmal bone cyst (ABC) is an expanding osteolytic lesion. ABC represents 1% of all primary benign bone tumors, whereby 4-12% occur in the pelvis. The etiology of this disease remains vague. Aneurysmal bone cyst can exist either as primary bone lesion (70%) or as secondary lesion arising from another bone disorder (30%). Moreover, pelvic ABCs are characterized by their large size and high va...

Chondroblastoma is a benign epiphyseal chondromatous lesion typically seen as small, well-defined, eccentric with thin rim of surrounding bone sclerosis. Soft tissue extension, metaphyseal involvement, periosteal reaction, cortex breach though not pathognomonic, are reported in literature. We present case report patient chondroblastoma showing atypical radiological presentation exophytic mass o...

among the rare bone tumors, the osteoblastoma is a fascinating tumor. the rarity, the predisposition to occur in any bone and the diagnostic dilemma makes this infrequent tumor interesting. it is sporadically reported in the literature and what is rarer is its occurrence in the pelvis. the unusual location and inconclusive radiographic findings with diffused diagnostic evidences delays the mana...

Organized Hematoma (OH) are benign hemorrhagic lesion that developed in the nasal sinuses. This tumor is a disease requires attention because it sometimes accompanied by bone destruction and can grow invasively into surrounding area. A 17-year-old Japanese male patient visited our hospital complaining of obstruction from about month ago. CT MRI imaging studies showed was confined to cavity.

Fibrous dysplasia (FD) is a common benign intramedullary lesion of the skeleton characterized by proliferation of fibro-osseous tissue. It is viewed as a developmental abnormality that is typically seen in adolescents and young adults. The lesion is usually asymptomatic and many times discovered as an incidental finding. Exophytic FD is an extremely rare variant that has to be differentiated fr...

normal 0 false false false en-us x-none ar-sa unicameral bone cysts (ubcs) are benign, osteolytic lesions which are often asymptomatic and are commonly seen in the proximal of humerus and femur. the average age at diagnosis is 9-11 years and there is a male preponderance with a male-to-female ratio of approximately 2-2.5 to 1. we describe a case of 5-year-old girl who presented to orthopedic cl...

Bone xanthoma is a rare benign primary bone lesion histologically characterized by sheets of foamy cells which are macrophages with cytoplasm filled droplets fat. It usually associated endocrine or metabolic diseases, in the absence called xanthoma. Because lack pathognomonic radiologic and clinical features, they require differential diagnosis broad spectrum lesions varying degree malignant po...

two new cases of aneurysmal bone cyst of the spine are presented. in one of them only the spinous process was involved, and in the second case mthe neural arch and the body were involved. a brief review of the literature with clinical, radiological and pathilogical features of this benign lesion is made and its differential diagnosis, specially from giant cell tumor of the spine emphasised.