Cases reported "Osteoma, Osteoid"

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11/224. Primary bone tumors of the femur presenting with spinal symptoms: a report of two cases and review of the literature.

    Two case reports of femoral bone lesions simulating lumbar spinal disease are presented. physical examination and case history were strongly suggestive of lumbar spinal pathology. In case 1, surgical resection of a venous hemangioma in the lumbar epidural space was performed but did not relieve pain. In case 2, conservative treatments for a protruded disk were performed for 3 months before an accurate diagnosis was made. After correct diagnoses were made, excision of the femoral tumors brought rapid relief of all abnormal findings in both cases. Compared with other causes of sciatica, femoral bone tumors are rare. However, careful attention should be paid to rule out these lesions if the diagnosis of a lumbar spinal disease is uncertain. Bone scintigraphy seems to be a sensitive diagnostic method to detect extraspinal osseous lesions.
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12/224. Anterior skull base osteoid osteoma: case report.

    Osteoid osteoma is a benign bone tumour which rarely occurs in the skull. A case of such a tumour in the posterior ethmoid region bulging into the anterior cranial fossa is reported in a 42-year-old woman who presented with intense frontal headaches. Excision of the tumour was performed through a subfrontal approach.
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13/224. Osteoid osteoma of the cervical spine depicted as dumbbell tumor by MRI.

    We report a case of 14-year-old male patient with osteoid osteoma of the cervical spine. magnetic resonance imaging (MRI) revealed a large dumbbell-shaped paravertebral tumor in the region of the exiting left C6 nerve. A computed tomographic (CT) scan after myelography showed a much smaller bony defect in the medial aspect of the left C6 pedicle with central calcification and extensive bone sclerosis around the defect, typical of osteoid osteoma. The diagnosis was confirmed postoperatively. The resected specimen exhibited extensive vascularization of the osteoid tissue. The case is presented because MRI did not allow a specific diagnosis of osteoid osteoma, and suggested the tumor was larger than in reality it was, by also depicting the reactive inflammation around the tumor as if it were part of the tumor.
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14/224. Arthroscopically assisted excision of osteoid osteoma involving the hip.

    Two cases of arthroscopically assisted excision of osteoid osteoma involving the femoral neck and acetabulum are presented. This technique allows for percutaneous excision of this benign bone lesion in those rare circumstances when it occurs in an intra-articular location. The approach enables direct visualization of the tumor as well as histologic confirmation. There was minimal morbidity, excellent relief of symptoms, and rapid functional restoration.
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15/224. Computed tomography-guided endoscopic removal of an osteoid osteoma from the femur.

    The case of a 19-year-old male patient who complained of dull pain in his right knee for more than 18 months and was finally diagnosed with intracortical osteoid osteoma in the femoral diaphysis is presented. A new operative method was used to locate and remove the tumor. Under spinal anesthesia with the patient in the prone position, a lateral and a posterior approach were marked with special bone cutting tubes under computed tomographic control. The usual arthroscopic instruments (punch, retrograde suction stamp) were used to remove the nidus under arthroscopic visualization, thereby avoiding the disadvantages of open excisions, such as large incisions, bone loss, long hospitalization, and risk of infection. The advantages and disadvantages are thoroughly discussed and compared with conventional surgical procedures.
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16/224. Osteoid osteomas with chromosome alterations involving 22q.

    cytogenetic analysis was performed in two osteoid osteomas. In both, the modal chromosome number was 46. One of the cases presented a del(22)(q13.1) as the sole clonal chromosome alteration. The other had clonal monosomies of chromosomes 3, 6, 9, 17, 19, and 21, as well as a del(22)(q13.1) was detected as a non-clonal chromosome alteration. There is only one osteoid osteoma reported so far showing clonal karyotypic alterations. The cytogenetic behavior of osteoid osteomas described here was different from that of the osteoid osteoma of the literature. Numerical alterations of chromosomes 3, 6, 9, 17, 19, 21 and 22 have been described in several neoplasias including bone tumors. The breakpoint of chromosome 22 involves a region where important genes for the regulation of the cell cycle have been mapped.
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17/224. Osteoid osteoma of the carpal bones.

    Osteoid osteoma is a benign bone tumor that rarely localizes in the hand or the carpal bones. We report two cases of osteoid osteoma localized in two different carpal bones. Unremitting wrist pain was a major clinical symptom. Surgical treatment including excision of the nidus was dramatically curative. In young patients, osteoid osteoma should be considered in the differential diagnosis of chronic wrist pain.
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18/224. Osteoid-osteoma of the radius. Report of a case.

    This case is a report of a 9-year-old boy with an osteoid osteoma in the distal radius, an unusual location. The tumor was remarkably large in size, and pain unrelieved by aspirin. Osteoid-osteomatat have been described in just about every bone in the skeleton. lower extremity involvement is more frequent than upper in all series and incidence is much higher in males than in females. pain is the major complaint, both night and day. The response to aspirin is variable. The diseases is most frequently encountered in the second decade of life.
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19/224. Osteoid osteoma of the lunate--a case report.

    We report a rare case of an osteoid osteoma of the lunate bone in a young lady who presented to us with chronic wrist pain. She was treated by excision and cancellous bone grafting of the lesion with complete resolution of symptoms.
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20/224. A painless subungual osteoid osteoma.

    BACKGROUND: Osteoid osteoma is a benign bone tumor. Its etiology is not fully understood and the role of trauma is still elusive. OBJECTIVE: Osteoid osteoma mostly presents with a poorly localized pain that is worst at night and characteristically relieved by salicylates. It usually occurs on the weight-bearing bones of the lower extremities, but toe location is quite rare. Here, we present a case of painless osteoid osteoma located subungually on the dorsum of the great toe. RESULT: A 29-year-old woman presented with a painless subungual mass on the dorsum of her great toe. Subungual exotosis, osteochondroma, and osteoma were considered in the differential diagnosis and the lesion was totally excised. Histopathologic examination showed characteristic findings of osteoid osteoma. CONCLUSION: A painless osteoid osteoma is rarely seen and it can be easily misdiagnosed if it occurs in an atypical location such as the subungual area.
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