Periosteal osteosarcoma is a rare subtype of osteosarcoma. Wide surgical removal is the commonly used treatment-method algorithm. However, the limb-salvage procedure of periosteal osteosarcoma in the distal tibia is a technical challenge to orthopedic surgeons because of the scarcity of soft tissue and subcutaneous nature in the anteromedial aspect. We encountered a 16-year-old female patient w...

Objective: Radiology plays a crucial role in diagnosis, work-up and staging of osteosarcoma. The main aim of the study is to review, analyze and characterize the imaging findings of a large series of histologically proven osteosarcomas focusing on the nonconventional subtypes. Methods: We retrospectively reviewed the imaging findings of 250 cases with histologically proven primary osteosarcoma....

The incidence of aneurysmal bone cysts is 0.14 cases per 100,000 individuals. Parosteal aneurysmal bone cysts are the least prevalent subtype and represent 7% of all aneurysmal bone cysts. We present the case of a 38-year-old male patient with pain and bulging in his right arm for eight months. He had previously been diagnosed as presenting giant-cell tumor, but his slides were reviewed and his...

Parosteal lipoma is a rare tumor, accounting for approximately 0.3% of all lipomas. Bony lesions are often found in patients with this tumor (59.2%), making the differential diagnosis of malignant tumors important. Our case was a 64-year-old male patient who complained of a 25 × 15-cm mass on his right thigh that had grown rapidly over a 2-month period. On magnetic resonance imaging, a high-int...

Osteosarcoma is the most frequent malignant bone tumor with a peak incidence in the second and third decades of life. Diagnosis of patients with osteosarcoma is limited to clinico-pathological parameters whereas molecular markers of tumor initiation and promotion have not yet been identified. We aimed to study the expression of the anti-apoptotic survivin gene in osteosarcoma specimens. A total...

CASE REPORT A 49 year-old female presented with a mass the size of a large grapefruit in the right gleno-humeral region. She described a constant ache from the lesion which had been present for about three months. There was some limitation of movement at the shoulder joint. There was no evidence of inflammation or lymphadenopathy. X-ray showed a large low density soft tissue mass in keeping wit...