1/15. 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 = 1keywords = skull (Clic here for more details about this article) |
2/15. A huge osteoblastoma with aneurysmal bone cyst in skull base.We reported a case of a huge osteoblastoma in the skull base of a young girl who had developed blindness in her right eye 1 year prior to examination. CT showed a large expansile bony lesion with eggshell margin over the skull base. MR imaging showed mixed solid and cystic parts with multiple fluid-fluid levels in the lesion. The optic chiasma and bilateral optic nerves were severely compressed by the tumor.- - - - - - - - - - ranking = 9.5127944309401keywords = skull, base (Clic here for more details about this article) |
3/15. osteoblastoma of the mandible with root resorption: a case report.This article reviews the clinical behavior, histologic features, differential diagnosis, and treatment of a benign osteoblastoma. Benign osteoblastoma is a rare tumor constituting 1% of all primary bone tumors. Only 15% of osteoblastomas occur in the skull and jaw bones. The most common clinical presentation is a painful or tender swelling. A case is presented of a 21-year-old female who had noted discomfort for approximately 2 years, and the pain was not relieved by any analgesic. The choice of treatment was local excision and curettage. In this case, root resorption of the adjacent tooth, which is not a characteristic behavior of osteoblastoma, is seen.- - - - - - - - - - ranking = 1keywords = skull (Clic here for more details about this article) |
4/15. Benign fronto-orbital osteoblastoma arising from the orbital roof: case report and literature review.BACKGROUND: osteoblastoma is an uncommon benign osteogenic neoplasm that rarely involves the orbit. Intracranial and intraorbital extension causing neurologic and ophthalmologic symptoms and signs is very unusual. We report the case of an osteoblastoma of the orbital cavity with ethmoidal and anterior cranial fossa extension presenting as unilateral proptosis. Manifestations and management of this rare fronto-orbital lesion are discussed, and the relevant literature is reviewed. CASE DESCRIPTION: This 22-year-old man experienced a 3-month history of progressive left proptosis without neurologic symptoms. Computed tomography and magnetic resonance imaging scans demonstrated a bony mass involving the roof of the left orbit and extending laterally to the adjacent ethmoid cells and upward to the lower part of the homolateral frontal convexity without parenchymal abnormality. A presumptive diagnosis of osteoma was considered. A left fronto-orbital craniotomy was performed. At surgery, the tumor was well circumscribed by a sclerotic margin. It was granular with bony spicules, destroying the orbital roof and involving the orbital cavity, ethmoidal cells, and anterior cranial fossa. The lesion was totally removed, and the anterior cranial base reconstructed. The histologic features were typical of benign osteoblastoma. After a follow-up period of 12 months, the patient has remained well without evidence of recurrence. CONCLUSION: osteoblastoma should be considered in the differential diagnosis with other fronto-orbital bone-forming lesions. Although generally regarded as benign, a complete resection is recommended to prevent the possibility of postoperative recurrence and malignant transformation. Twelve previously reported cases were also reviewed.- - - - - - - - - - ranking = 0.58546573849002keywords = base (Clic here for more details about this article) |
5/15. osteoblastoma of the mandible: clinicopathologic study of four cases and literature review.BACKGROUND: osteoblastoma is a benign bone tumor accounting for 1% of all bone tumors; it commonly involves the spine and the sacrum of young individuals, with less than 5% being localized to the posterior mandible. In view of its rarity in the maxilla and mandible, osteoblastoma is rarely diagnosed as such in the absence of interdisciplinary cooperation. methods: A retrospective study of four benign osteoblastomas was performed based on a review of the clinical, radiographic, and histopathologic features of all cases. RESULTS: The tumors involved the posterior mandible of young patients (age range, 10-21 years; two male and two female patients) and appeared as painful bone expansions. Radiologically, they were poorly defined, radiolucent/radiopaque lesions containing calcifications and not showing sclerotic borders or periosteal reactions. Histologically, they were composed of osteoid and woven bone surrounded by plump osteoblast-like cells with interposed fibroblasts, inflammatory cells, and red blood cells. All patients were disease free after prolonged follow-up. CONCLUSIONS: Osteoblastomas may be distinguished from other bone tumors, fibro-osseous lesions, and odontogenic neoplasms on the basis of integrated clinical, radiologic, and histologic features and usually manifest an indolent clinical course.- - - - - - - - - - ranking = 0.58546573849002keywords = base (Clic here for more details about this article) |
6/15. Benign osteoblastoma of the temporal bone: Case report and review of the literature.BACKGROUND: Benign osteoblastoma arising from the temporal bone is extremely rare in elderly patients. We reviewed the literature on benign osteoblastoma of the temporal bone and now propose a new classification of this pathologic entity based on its anatomical location in the temporal bone. CASE DESCRIPTION: A 68-year-old woman presented with tinnitus and hearing disturbance with a duration of 1 year. Her neurologic examination revealed mixed hearing disturbance and hypogeusia. Preoperative computed tomography showed a bony destructive isodensity mass with calcified component involving the temporal bone. The FDG-PET scan showed high uptake on the lesion. After preoperative embolization on the day before surgery, the patient underwent tumor removal via a left infratemporal approach under neuronavigated guidance. The pathologic examination revealed a benign osteoblastoma. CONCLUSION: We present the first case of FDG-PET showing high uptake on the lesion. Preoperative embolization is useful to reduce the amount of bleeding during the surgery.- - - - - - - - - - ranking = 0.58546573849002keywords = base (Clic here for more details about this article) |
7/15. Benign osteoblastoma of the parietal bone.A 5-year-old girl presented with a 1-year history of a subcutaneous swelling in the right parietal region. There were no cerebral symptoms or signs. Plain X-ray of the skull showed a lytic bony lesion with sclerotic margin. Computed tomography showed a hypodense, osteolytic lesion with thinned and bulged inner and outer skull tables with intact continuity. There was no intracranial lesion. At operation, the mass was found to be pink and granular, and was totally enucleated. histology revealed it to be a benign osteoblastoma.- - - - - - - - - - ranking = 2keywords = skull (Clic here for more details about this article) |
8/15. Fine needle aspiration diagnosis of aggressive giant cell tumor of bone. A case report.giant cell tumors of bone are neoplasms with potential local and systemic aggressiveness. A case of giant cell tumor with radiologic and histologic features suggestive of locally aggressive behavior is reported. Cytologic material was obtained by fine needle aspiration from an intraosseous tumor that destroyed the cortex and from the invaded, adjacent soft tissues. The smears from the osseous aspirate showed the typical cytologic features of giant cell tumor, whereas the invaded tissues had a prominent loss of cohesiveness between mononucleate and giant cells. In addition, mitotic figures in the mononucleate component were noticeable. The differential diagnosis based on clinical and cytologic findings is discussed.- - - - - - - - - - ranking = 0.58546573849002keywords = base (Clic here for more details about this article) |
9/15. Partial ablation of benign osteoblastoma: a case report.osteoblastoma is a rare bone tumor involving spine, long bones and infrequently skull, especially with sinus localization. The orbital localization of the neoplasia may cause axial or paraxial exophthalmus, vertical diplopia, pulsatile orbital pain, soft tissue swelling with skin erythema. In addition the osteoblastoma may cause an optic nerve compression, with optic disc edema up to optic nerve atrophy. We describe a case of giant benign osteoblastoma with frontal occurrence and orbital involvement with optic nerve compression. Surgery was performed in order to obtain the partial ablation of the neoplasia. After a 4-year follow-up there was no evidence of recurrence.- - - - - - - - - - ranking = 1keywords = skull (Clic here for more details about this article) |
10/15. Malignant osteoblastoma of the skull.A bone tumour of intermediate grade malignancy in the skull is described. These tumours are extremely rare and share several histological features with the benign osteoblastomas and low grade osteosarcomas. They may be associated with local invasion and pulmonary metastases. Treatment of this tumour in the skull poses several problems in view of its proximity to the cerebral cortex.- - - - - - - - - - ranking = 6keywords = skull (Clic here for more details about this article) |
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