1/19. Osteoid osteoma of the elbow: a diagnostic challenge.BACKGROUND: Osteoid osteoma is a painful benign neoplasm that is rarely found in the elbow region. methods: The study included fourteen patients, and we believe that this is the largest reported series of patients with osteoid osteoma of the elbow evaluated at one institution. Most of the patients had had symptoms for a prolonged period and had had multiple invasive procedures before an accurate diagnosis was made. Although findings on physical examination generally are nonspecific and are not always accurate in localizing the lesion, plain tomograms and computed tomography scans were most helpful in identifying the nidus in the present study. Thirteen of the patients had limited motion of the elbow before the definitive diagnosis was made, and ten of these thirteen had a mean flexion contracture of 38 degrees. RESULTS: Removal of the nidus resulted in relief of pain and improvement in the range of motion of the elbow in all fourteen patients. A persistent postoperative flexion contracture was more common in the patients who had had a previous arthrotomy of the elbow than in those who had not had that procedure. CONCLUSIONS: It is important to recognize this uncommon entity to avoid the morbidity associated with a prolonged delay in diagnosis. Because the symptoms resolve after excision of the lesion, the surgeon can avoid unnecessary soft-tissue dissection and release of the contracture.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
2/19. Periosteal benign osteoblastoma of the mandible. Report of a case and review of the literature pertaining to benign osteoblastic neoplasms of the jaws.A case of periosteal benign osteoblastoma arising in the mandible of a Caucasion male aged 9 years is presented. A review of the literature has produced 24 additional benign osteoblastic neoplasms of the jaws which have been delineated as osteoblastoma or osteoid osteoma. There seems to be a predilection for these lesions to occur in males and in the mandible. Osteoblastomata occur most frequently in patients under 20 years of age whereas osteoid osteomata arise mainly in persons over 25 years of age.- - - - - - - - - - ranking = 5keywords = neoplasm (Clic here for more details about this article) |
3/19. Unusual manifestation of vertebral osteoid osteoma: case report.We report the case of a 64 year-old man with a clinical history suggesting a low thoracic-cord involvement, in which an unexpected vertebral osteoid osteoma was discovered. The patient underwent MRI of the thoraco-lumbar spine, which included sagittal and axial T1-weighted images, and sagittal double-echo T2-weighted images. Subsequently, CT scan was carried out with 2-mm-thick axial sections, aimed at T10 vertebra. magnetic resonance imaging disclosed an extra-axial mass at T10 level. Computed tomography scan suggested an osteoid osteoma of the tenth thoracic vertebra, involving the lamina with marked sclerosis and prevalently endocanalar extension. histology following surgical resection confirmed the diagnosis. In the reported case CT scan provided the correct pre-operative diagnosis of osteoid osteoma despite its unusual clinical--anamnestic presentation. magnetic resonance imaging was useful in establishing the relationship of the neoplasm with the spinal cord.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
4/19. Osteoid osteoma of the distal humerus mimicking tennis elbow.Osteoid osteoma is an uncommon bony neoplasm which rarely occurs in the elbow region. We present a case in a sixteen year old male whose symptoms were suggestive of lateral epicondylitis, or tennis elbow, and he had been treated as such for a period of eighteen months. CT scan and isotope bone scan showed typical features of osteoid osteoma and his symptoms resolved rapidly following excision of the lesion. tennis elbow is rare in the adolescent age group, and other diagnoses should be excluded in cases where the clinical findings are suggestive of this condition.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
5/19. Intracranial mesenchymal chondrosarcoma with osteoid formation: report of a pediatric case.CASE REPORT: We present a case of a 14-year-old girl with a 3-week history of severe progressive headache and intermittent vomiting. magnetic resonance imaging (MRI) revealed a large intensely enhancing mass, which seemed to arise from the right side of the cerebral fossa with implant base in the inferior face of the tentorium and significant mass effect on the nearby structures. A presumptive preoperative diagnosis of meningioma was made. Subtotal surgical resection was performed using the occipital approach. Histologically the neoplasms had the classic features of a mesenchymal chondrosarcoma associated with the focal presence of osteoid matrix. DISCUSSION: Clinical features, therapeutic approaches and prognosis of this rare tumour are discussed with regard to the known 30 cases in the literature.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
6/19. Osteoid osteoma of the glenoid: minimally invasive treatment.Osteoid osteoma is a benign neoplasm that is often associated with a delay in diagnosis and severe pain. When indicated, surgical extirpation can be quite difficult, depending on the anatomic site of the tumor. Recent advances in radiofrequency ablation have dramatically impacted the successful treatment of these lesions. In this paper, a case report with review of the literature is presented to update all orthopedic surgeons on the use of this technique-especially important since it may obviate the need for surgery for many patients.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
7/19. Image-guided surgery in resection of benign cervicothoracic spinal tumors: a report of two cases.BACKGROUND CONTEXT: Osseous spinal tumors are an uncommon cause of persistent axial pain and muscle spasm, but even benign lesions may grow to cause deformity or neurological signs.Traditional treatment approaches to resection can be debilitating even when the tumor is benign. PURPOSE: Emerging technologies allow surgeons to diagnose and treat osseous neoplasms while minimizing the collateral damage caused by surgical exposure and tumor excision. STUDY DESIGN: Technical considerations are presented through two cases of benign osseous neoplasm occurring in the cervicothoracic spine of competitive athletes, demonstrating the meth-ods used to provide effective treatment while maintaining maximal functional capacity. methods: Stereotactic imaging and intraoperative guidance was used as an adjunct to tumor care in these patients. Used in combination with minimally invasive, microsurgical techniques,stereotactic guidance localized and verified excision margins of benign vertebral lesions, minimizing soft tissue trauma and collateral damage. RESULTS: Computer-assisted stereotactic localization allowed us to successfully ablate these lesions from their anatomically challenging locations, without disrupting the shoulder girdle or neck musculature, and without extensive bony resection. CONCLUSIONS: Image guidance can accurately localize and guide excision of benign vertebral lesions while minimizing soft tissue trauma and collateral damage, allowing patients a rapid and complete return to high-demand function.- - - - - - - - - - ranking = 2keywords = neoplasm (Clic here for more details about this article) |
8/19. MRI in diagnosis of osteoid osteoma of the proximal femur: a potentially deviating aspect. Description of a clinical case.Osteoid osteoma constitutes 10-12% of all benign neoplasms of the bone. The tumor more frequently involves the male sex (male to female ratio 2.1:1) and it may be observed in all age groups, with evident predilection for the second decade of life. All of the skeletal segments may be affected, but the most frequent site is the long bones, in the diaphyseal, metaphyseal and more rarely epiphyseal regions. The lesion is characterized by an osteolytic area, the nidus, which is at times partially calcified, surrounded by an osteosclerotic zone that is more or less accentuated. Clinical suspicion and traditional radiography are essential in diagnostic orientation; usually, further imaging methods are also recommended, such as bone scan with Tc99, CT scan and MRI. This last method allows for easy localization of the lesion, although with a sensitivity that is less than that of the CT scan. Nonetheless, the finding, if not supported by clinical suspicion, may be dangerously deviating and it may orient diagnosis towards a more aggressive disease.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
9/19. osteoblastoma of the maxilla and mandible: a report of 24 cases, review of the literature, and discussion of its relationship to osteoid osteoma of the jaws.osteoblastoma is a benign neoplasm of bone characterized by a proliferation of osteoblasts forming bone trabeculae set in a vascularized fibrous connective tissue stroma. We report 24 examples of this neoplasm arising in the maxilla and mandible and compare the clinical and radiographic characteristics of this neoplasm to 53 previously reported examples of osteoblastoma and osteoid osteoma in the jaws. Our results reveal more females reported in the new examples of osteoblastoma than in the previously reported examples of osteoblastoma and osteoid osteoma. This raises the overall female percentage from 47.2% to 58.4%. In addition, significantly fewer patients reported pain, tenderness, and discomfort associated with their neoplasms than in previously reported cases. When all cases are combined, a predominant trend is observed whereby osteoblastoma occurs predominantly on the left side of the posterior mandible and is associated with pain, tenderness, and discomfort. We also provide a rationale for use of the term "osteoblastoma" for any benign osteoblastic neoplasm arising in the jaws.- - - - - - - - - - ranking = 5keywords = neoplasm (Clic here for more details about this article) |
10/19. Osteoid osteoma of the foot.Dr. Wu discusses a benign osteoblastic neoplasm that accounts for less than 3% of all excised tumors. He reviews the symptoms of a 17-year-old, with pathology localized to the third toe. Clinical, radiographic, and histologic characteristics are described.- - - - - - - - - - ranking = 1keywords = neoplasm (Clic here for more details about this article) |
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