Juxta-articular, subperiosteal osteoid osteomas arising around the ankle are unusual. Tumors arising on the neck of the talus commonly produce symptoms mimicking monoarticular arthritis. Patients are usually treated for arthritis or ankle sprain, which often leads to a delay in definitive diagnosis. Here we present a case of osteoid osteoma of neck of talus which was presented as ankle pain. It...

Using standard histomorphometric indices on bone biopsies of trabecular bone volume, osteoid volume, the trabecular osteoid surface, the extent of the calcification front and the number of osteoid lamellae, a histomorphometric diagnosis of osteomalacia was made in three of 28 elderly female patients with fracture of the proximal femur. These patients also showed biochemical changes in the serum...

Ten percent of all osteoid osteomas are located in the spine; they represent the most common cause of painful scoliosis in adolescents. The recommended treatment is surgical excision of the nidus. Nine patients with osteoid osteoma of the spine underwent surgical treatment between 1996 and 2002. Complete nidus removal was performed in all patients and the diagnosis was made by frozen sections i...

Osteoid osteoma of the calcaneus is rare and frequently misdiagnosed as arthritis because of similar symptoms. In addition, radiographic findings may be nonspecific, and magnetic resonance imaging (MRI) may show a bone marrow edema and changes in adjacent soft tissue. A 19-year-old man presented with a 6-month history of persistent pain and swelling in the left hind foot; diagnostic computed to...

Osteoid osteoma is a relatively frequent benign bone tumour, consisting of osteoid and woven bone, and surrounded by a halo of reactive sclerotic bone, with an average size of the nidus less than 1.5 cm. It is a condition of late childhood, adolescence and young adult age. It usually occurs in the appendicular skeleton and the spine, and is generally localised in or near the cortex. The lesion ...

This study describes a case of giant cell osteosarcoma (GCO) localised on the right scapulae in six-year-old neutered male Scottish Fold cat. GCO is rare tumour domestic animals. also known as cell-rich osteosarcoma. Multinucleated cells and osteoid structures are observed GCO. The mass was 4.6 x 4.4 4.3 cm size very firm. Microscopically, fusiform spindle-shaped multinucleated were observed. T...

AIMS To determine a possible mechanism to explain the presence of aluminium lines within fully calcified bone in aluminium-related osteomalacia. METHODS Fifty five bone cases shown by bone biopsy to be aluminium-related osteomalacia were studied. In 38 specimens aluminium lines were identified within calcified bone by means of the Aluminon stain and a characteristic form of patchy mineralisat...

Osteoid osteoma is a benign skeletal neoplasm composed of osteoid and woven bone that rarely exceeds 1.5 cm in greatest dimension. The lesion is most commonly located in the cortex of long bones where it is associated with dense, fusiform, reactive sclerosis. Less often, it may be cancellous, where reactive osteosclerosis is usually less intense and may be distant from the lesion. Cancellous le...

INTRODUCTION Osteoid osteoma is a benign tumor of the growing skeleton. It presents with pain, which is usually worse at night. The radiographic features consist of a central oval or round nidus surrounded first by a radiolucent area followed by another area of sclerotic bone. In the hand, osteoid osteoma is more commonly located in the phalanges and carpal bones. The metacarpals are the least ...

Osteoid osteomas of the talus are rarely seen. They can easily be misdiagnosed. In this case report, we present a 21-year-old man with an osteoid osteoma in talar neck whose pain onset coincided ankle injury. The latter was deemed misleading factor when making diagnosis. Eventually, patient treated surgical excision osteoma. gap that resulted after filled autologous bone graft. A year his opera...