1/67. Intra-articular benign osteoblastoma of the acetabulum: a case report.The acetabulum is an unusual location for benign osteoblastoma, usually seen in adolescents and young adults. This article reports a case of an intra-articularly expanding benign osteoblastoma of the acetabulum in a 6-year-old boy. The diagnostic and surgical features of the disease in this unusual location at this young age are discussed. Excisional biopsy and curettage of the lesion followed by bone grafting resulted in healing of the acetabular lesion without acetabular dysplasia, but with a resultant coxa magna.- - - - - - - - - - ranking = 1keywords = bone (Clic here for more details about this article) |
2/67. osteoblastoma in lumbar vertebral body.We report a young man with low back pain suspected to have a disc protrusion. Imaging suggested a tumour of the dorsal portion of the fifth lumbar vertebral body. Operation suggested a giant-cell tumour and subsequent histology showed an osteoblastoma. All typical imaging features of osteoblastoma are demonstrated in this rather uncommon location. Contrast-enhancing bone-marrow oedema on MRI, with mild enhancement of the tumour, together with the CT appearances were the clues to the diagnosis.- - - - - - - - - - ranking = 1keywords = bone (Clic here for more details about this article) |
3/67. Acetabular osteoblastoma: description of a case.osteoblastoma is a slow-progressing, benign bone tumor, that is not frequently observed in clinical orthopaedics (approximately 1% of all primary bone tumors). There is predilection for the vertebrae (posterior arch), the femur, the tibia, and the cranium; it affects young subjects (from 10 to 35 years), with predilection for males (males: females = 2:1). Symptoms are not very specific, characterized essentially by moderate, discontinuous pain, that is responsive to treatment by NSAIDS; it may, at times, be asymptomatic. On radiographic assessment it is viewed as a lytic area that is rounded, greater than 2 cm in size, with unclear margins, with or without peripheral bone reaction. It is not easy to diagnose osteoblastoma, particularly if it is localized in unusual sites, such as in the pelvis. The authors present a case of osteoblastoma of the acetabular bottom in a subject aged 22 years, that was not diagnosed unrecognized for about 2 years from the onset of symptoms.- - - - - - - - - - ranking = 3keywords = bone (Clic here for more details about this article) |
4/67. Recurrent osteoblastoma of the hamate bone. A two-stage reconstruction with a free vascularized iliac crest flap.An osteoblastoma in a carpal bone is very rare and presents a problem of reconstruction after wide tumour excision. We report a case of recurrent osteoblastoma of the right hamate bone with involvement of the ulnar carpal bones and soft tissues that was successfully treated by en bloc resection, temporary interposition of bone cement and fixation with K-wires, followed by reconstruction with a free vascularized iliac crest flap, tailored to the exact size of the defect, in a second procedure. Rapid fusion was achieved and hand function preserved with no evidence of recurrence 3 years postoperatively.- - - - - - - - - - ranking = 8keywords = bone (Clic here for more details about this article) |
5/67. Childhood temporal bone osteoblastoma: a case report.osteoblastoma is a rare primary tumor of the bone. Its sites of predilection are the vertebrae and the long bones. Occurrence in the skull is rare. The authors describe an unusual case of osteoblastoma occurring in the temporal bone of a child. Interestingly, although the clinical and radiological features were suggestive of an aggressive lesion, the histological features were consistent with that of a benign tumor. Although generally regarded as benign, osteoblastoma has potential for recurrence, local invasion, and, rarely, malignant transformation. As such, complete resection, whenever possible, is preferred over conventional curettage.- - - - - - - - - - ranking = 7keywords = bone (Clic here for more details about this article) |
6/67. Periosteal osteoblastoma: a case report and a review of the literature.Osteoblastomas located on the surface of cortical bone, so-called periosteal (juxtacortical) osteoblastomas, are extremely rare. A 24-year-old man complained of pain and swelling in the left knee. The clinical and radiological investigation showed a tumor located in the posterior portion of the distal shaft of the femur. The radiological differential diagnosis included parosteal osteosarcoma, periosteal chondroma and periostitis ossificans. A frozen section was obtained and histology revealed an osteoblastoma with large epithelioid-appearing osteoblasts consistent with an aggressive osteoblastoma. An en bloc resection of the tumor was performed and the definitive histology of the whole specimen revealed a typical osteoblastoma. The authors draw attention to the fact that periosteal osteoblastoma is a rare tumor that could be mistaken clinically and histologically for other and more common tumors at this location.- - - - - - - - - - ranking = 1keywords = bone (Clic here for more details about this article) |
7/67. Multifocal osteoblastoma of the hand.osteoblastoma is a benign bone tumor with uncertain radiologic and typical histologic pattern that, in most cases, can be diagnosed without any problems. Usually, it is a solitary bone tumor. The case presented is a 9-year-old child with multiple osteoblastomas occurring in multiple bones of the right hand. The child had pain in his right hand for several weeks. On physical examination, no swelling or other symptoms were elicited. All lesions noted radiologically were treated by curettage, and in all the pattern of osteoblastoma was diagnosed.- - - - - - - - - - ranking = 3keywords = bone (Clic here for more details about this article) |
8/67. osteoblastoma-like osteosarcoma.We report an osteoblastoma-like osteosarcoma in the right proximal fibula in a 22-year-old woman. Radiographs showed an irregular osteolytic lesion from the metaphysis to the epiphysis in the proximal fibula with partial destruction of cortical bone. Tissue from a biopsy indicated a typical osteoblastoma. curettage and bone graft was performed. One year after the surgery, local recurrence occurred, and a wide excision was performed. Histological examination of the en-bloc surgical specimen revealed the tumor had permeated through the host bony trabeculae, although the nuclear atypia was not marked. Immunohistochemical expression of MIB-1 was detected in 9.0% of cells.- - - - - - - - - - ranking = 2keywords = bone (Clic here for more details about this article) |
9/67. Benign osteoblastoma of the temporal bone: case report and literature review.We report a case of benign osteoblastoma of the temporal bone and a review of the literature. osteoblastoma is a rare bony tumor that usually develops in the long bones or in the vertebral column. To our knowledge, this is the fourth reported case of benign osteoblastoma confined to the temporal bone, and it is the second such reported case to include facial paralysis as the initial symptom. Result of computed tomography scan, magnetic resonance imaging scan, and angiography are reported. The diagnosis and management of this type of lesion are also discussed.- - - - - - - - - - ranking = 7keywords = bone (Clic here for more details about this article) |
10/67. osteoblastoma of the patella: case report.A 34-year-old man came to our clinic because of left knee pain and mild swelling. Local tenderness over the peripatellar area was observed during physical examination. The range of motion of the knee was full. The radiographic presentation of the patella revealed an osteolytic lesion with a thin sclerotic rim without evidence of extra-articular involvement. The computed tomography revealed an upper pole intraosseous lesion. Intralesional curettage and allogeneic bone grafting were carried out. The pathologic examination demonstrated primitive osteoblasts, with osteoid features and many giant cells. A diagnosis of the osteoblastoma was made. Following surgery, the patient regained full range of motion and was pain-free. Complete healing of the lesion without evidence of recurrence was noted in follow-up radiographs 2 years postoperatively.- - - - - - - - - - ranking = 1keywords = bone (Clic here for more details about this article) |
| | Next -> |