BACKGROUND Osteoid osteomas are benign bone-forming tumors characterized by local inflammation and pain. They are also characterized by a small osteolytic lesion (nidus). Spondylolysis is a defect of the pars interarticularis, which may lead to stress fractures, and is a common cause of low back pain in adolescence. Osteoid osteoma occurs predominantly in the posterior elements of the spine. Ma...

Introduction Osteoid osteoma is a benign osteoid-forming tumor generally localized to the long bones, is rarely localized in the hand and the major symptom is intermittent pain. This study aims to present two patients who were operated on for metacarpal osteoid osteomas. Case Outline A 16-year-old female patient and an 18-year-old male patient were operated on for metacarpal osteoid osteomas. T...

Osteoid osteoma is a benign skeletal neoplasm composed of osteoid and woven bone. The majority of the lesions arise in the cortex of long bones. Osteoid osteoma of the spine is a rare primary spine tumor and those located at the thoracal spine are even rarer. The usual treatment involves complete resection, including the nidus, or alternatively radiofrequency percutaneous ablation is performed....

Osteoid osteoma and osteoblastoma are rare primary bone tumors that usually do not arise in the spine. Histologically, osteoid osteoma and osteoblastoma are similar, containing osteoblasts that produce osteoid and woven bone. Osteoblastoma, however, is larger, tends to be more aggressive, and can undergo malignant transformation, whereas osteoid osteoma is small, benign, and self-limited. With ...

An intraarticular osteoid osteoma of the knee is uncommon, and its treatment is challenging. The authors present a case of arthroscopic excision of an intraarticular osteoid osteoma in the distal femur, which was accessible through the knee joint. After confirming the nidus of the osteoid osteoma by computed tomography, the lesion was completely removed arthroscopically. The patient reported co...

In multifocal findings, the possibility of multifocal osteoid osteomas should be considered and this case helps us to be attentive for the unusual radiographical presentation of osteoid osteoma.

Çoğunlukla başka bir nedenle yapılan radyolojik incelemelerde rastlantısal olarak saptananan benign osteojenik tümörlerden olan osteoid osteoma aktiviteden bağımsız, geceleri daha şiddetli ağrıya neden olur. Standart radyografiler lezyonu gösterebilir ancak nidusun gösterilmesi ve lezyonun yerinin kesin tespiti için bilgisayarlı tomografi (BT) gerekmektedir. Nidus adı verilen radyolusen alana s...

Periosteal osteoid osteoma is extremely rare. The diagnosis is not always clear. We report a case of periosteal osteoid osteoma arising from the posterior surface of the right distal femur in a 21-year-old woman. After careful evaluation and excisional biopsy, histological examination confirmed the diagnosis of osteoid osteoma, showing the nidus, surrounding osteosclerosis, and catarrhal synovi...

Osteoid osteoma was first described as a distinctive benign osteoblastic tumour by Jaffe (1935). Lichtenstein (1965) defined osteoid osteoma as a small, oval or roundish tumour-like nidus composed of osteoid and trabeculae of newly formed bone deposited within a substratum of highly vascularised osteogenic connective tissue. This lesion has been reported in almost every bone but not previously ...

Osteoid osteoma is a small common benign osteoblastic tumor. Foot osteoid osteomas represent a minority of cases. Patients are usually male children and young adults within the third decade. In our case report we describe an osteoid osteoma of the calcaneus in a young adult, semi-professional basketball player. Starting from the case description, we aim to: 1) Analyse the reasons of initial mis...