• The Journal of the Korean bone and joint tumor society
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• v.5 no.1
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• pp.23-28
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• 1999

Between Sep. 1986 and Mar. 1996, twenty four patients with recurrent giant cell tumor of their long bones were treated and followed up for more than two years. We applied three different modalities for treatment: curettage with bone graft, curettage and packing with polymethylmethacrylate, wide excision with or without reconstruction. During the average 51.5 months after operation(24-97 months), two of three patients who underwent curettage with bone graft showed recurrence. Patients who underwent wide excision showed no recurrence. Five of fifteen patients who underwent curettage and packing with polymethylmethacrylate showed recurrence. Four of seven who showed recurrence were treated with reapplication of curettage and packing with polymethylmethacrylate. All four patients showed no recurrence, and two of them have been followed up for more than two years. We suggest that the curettage and packing with polymethylmethacrylate is an effective treatment modality of the recurrent giant cell tumor.

• The Journal of the Korean bone and joint tumor society
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• v.5 no.1
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• pp.51-55
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• 1999

Aspirin has usually been taken for pain relief originating in the nidus of osteoid osteoma, however it takes too long to become effective. Because of the protracted painful course and the unpredictability of regression, osteoid osteoma is usually removed. And then, the defective host bone is internally fixed by plate and screws and augumented by autogenous bone graft. However, the common intracortical location and exuberant periosteal reaction hinders the exact intraoperative localization of the nidus. The authors managed 6 patients by computerized tomography-guided percutaneous nidus excision with a relatively small skin incision, small cortical window, short operation time and no bone graft. It may be one of the best options for removal of the nidus of osteoid osteoma with certainty.

• The Journal of the Korean bone and joint tumor society
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• v.5 no.1
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• pp.63-69
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• 1999

Recently we experienced four cases of soft tissue Ewing sarcoma, developed in the calf muscles in two cases, and one case each in the foot and suprascapular region. We also found that the clinical course in all cases was rather rapid, because of local recurrence and metastatic lesions developing within a few months, followed by the patients' death in about 2 years after the primary tumor was excised. These cases were improperly treated initially as some kind of benign soft tissue tumor. The delay led to missed early accurate diagnosis and was thought to be one of the main causes for the rapid local recurrence and metastasis after tumor excision. The pulmonary metastasis was the most common cause of death.

• The Journal of the Korean bone and joint tumor society
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• v.12 no.1
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• pp.89-94
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• 2006

When the old schwannoma has the degenerative changes, it is named as the ancient schwannoma which was rarely reported. The degenerative changes are perivascular hyalinization, calcification, cystic necrosis, marked decrease of Antoni type A area, and degenerative nuclei and the ancient schwannoma may be misinterpreted as sarcomatous pleomorphisms. We experienced the ancient schwannoma which has massive hemorrhage and hematoma, cystic change, calcification, and marked decrease of Antoni A area in leg on 75 year old male patient, and report it.

• The Journal of the Korean bone and joint tumor society
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• v.12 no.1
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• pp.78-82
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• 2006

Kimura's disease is uncommon and chronic inflammatory disease of unknown etiology. It manifests as solitary or multiple subcutaneous nodule, primarily located on the cervical area with local adenopathies and salivary gland hypertrophy. Its clinical course is benign nature. Histologic findings are hyperplastic lymphoid tissue, inflammatory infiltrates rich in eosinophils and proliferations of capillary venules. Treatment options are steroid therapy, radiation therapy and surgical excision. We report two cases of Kimura's disease on medial aspect of upper arm.

• The Journal of the Korean bone and joint tumor society
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• v.14 no.1
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• pp.56-61
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• 2008

More than half of the reported cases of congenital arteriovenous malformations involve the extremities. However, these are predominantly arteriovenous malformations of soft tissues. There are few studies on intraosseous arteriovenous malformations. The clinical features of vascular malformations are not well defined, but are likely to be extremely diverse. So, it is not easy to diagnose exactly and treat intraosseous arteriovenous malformations. The authors noted intraosseous arteriovenous malformation of tibia in a child and had a good result by the use of ethanol embolization. Therefore we include those results along with the literature review.

• The Journal of the Korean bone and joint tumor society
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• v.14 no.2
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• pp.182-186
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• 2008

Simple bone cysts are common, benign bone tumor and for the treatment, curettage with bone grafting, resection and intralesional steroid or autogenic bone marrow injections were usually performed. Simple bone cysts of the calcaneus are relatively uncommon and curettage with autologous bone grafting were proposed for management rather than intralesional steroid injections. We would like to report 9 year-old male with calcaneal simple bone cyst treated satisfactorily by minimally invasive endoscopic curettage and autologous bone grafting with review of the relevant literature.

• The Journal of the Korean bone and joint tumor society
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• v.14 no.2
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• pp.178-181
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• 2008

In contrast to ganglion of the soft tissue, periosteal ganglion occurring within or beneath the periosteum is a rare disorder. The differential diagnosis includes periosteal chondroma, lipoma, giant cell tumor of tendon sheath and periosteal osteosarcoma. Most common location for periosteal ganglion is the tibia, followed by radius, femur and ulna. To our knowledge, only 1 case of periosteal ganglion of the fibula has been reported in the literature. We report a case of periosteal ganglion of the distal fibula in a thirty-year-old woman treated with excision of the cyst and the adjacent periosteum.

• The Journal of the Korean bone and joint tumor society
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• v.14 no.2
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• pp.172-177
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• 2008

The epithelioid sarcoma is a rare high grade soft tissue sarcoma that affects young usually male, adults or adolescents. The most common localization is the hand and the forearm, followed by the leg and the foot. In most cases, the sarcoma grows slowly, involves the dermis, subcutis, or deeper soft tissues in the distal extremities. Epithelioid sarcoma is a slowly growing tumor with a high propensity for local recurrences and lymph node metastases. This neoplasm is likely to be confused with a variety of benign and malignant conditions. The treatment consists of wide surgical excision, chemotherapy and radiotherapy. We report the cases of 16-year-old girl with an epithelioid sarcoma on the lower extremity.

• The Journal of the Korean bone and joint tumor society
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• v.15 no.2
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• pp.160-164
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• 2009

The osteopoikilosis is a rare disorder characterized by multiple radiodensities in the metaphysis or in the epiphysis of long tubular bones. The etiology and pathogenesis remain obscure, generally transmitted as an autosomal dominant fashion. The osteopoikilosis is asympotomatic and it is usually found radiologically as an incidental finding. Our case shows a typical clinical feature of the osteopoikilosis, and the biopsy was done to differentiate other disease from the osteopoikilosis.