• The Journal of the Korean bone and joint tumor society
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• v.1 no.1
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• pp.45-51
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• 1995

The incidence of metastatic bony lesion has been increased recently, with the advanced therapeutic modalities of malignant tumors. The purpose of this study was to evaluate the effectiveness of surgical treatment in impending or established pathologic fractures due to metastasis in extremity. From 1981 to 1992, thirty two patients who had established or impending pathologic fractures in extremity had been treated surgically. The locations of metastasis, were lower extremity in 24 cases(femsral head and neck;5, intertrochanteric;7, subtrochanteric;8, femoral shaft;4) and upper extremity in 8 cases(proximal humerus;2, humoral shaft;6). The method of surgery was excision of tumor mass and rigid internal fixation to allow immediate mobilization, except 2 cases of amputation. The results were analysed by two criteria. The first was the grade of performance status that was made by modification of Functional Classification of New York Heart Association. The second was the degree of pain relief. The performance status was improved at least one grade in all patients and the mean improvement was 1.7 grades. The satisfactory pain relief was achieved in 81% of patients. Postoperatively, most of the patients had only slight to moderate limitation of physical activities and they became comfortable at rest and ordinary activities. The solitary metastatic lesions showed better pain relief(92%) than multiple metastasis(75%). The curative surgery was done in 3 cases, and they showed more than 24 months of disease-free survival.

• The Journal of the Korean bone and joint tumor society
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• v.12 no.1
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• pp.47-51
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• 2006

Osteofibrous dysplasia is a rare bone tumor arising in patient younger than 10 years. Because of the frequent local recurrences after intralesional curettage and even after wide extraperiosteal resection, it is difficult to treat. Recurred lesions often showed increased disease activities. We experienced a case of osteofibrous dysplasia arisen in tibia. We treated the recurrent lesion occurred after two times of curettages and bone grafts with wide extraperiosteal segmental resection and reconstruction with free vascularized fibular graft. Here we report the case with review of the related literatures.

• The Journal of the Korean bone and joint tumor society
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• v.12 no.1
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• pp.83-88
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• 2006

Osteochondroma is a hyperplasic bony lesion caused by subperiosteal displacement of physeal cartilages, and the most common benign bone tumor. Osteochondromas rarely cause vascular complications, but when encountered, acute ischemia, phlebitis, and arterial puncture are the most common. They are caused by the mass effect or by the sharp end of the tumor. Deep vein thrombosis may be caused by impaired venous blood flow or a hypercoagulable blood state, but sometimes no predisposing cause can be found. We experienced a patient with deep vein thrombosis caused by the mass effect of an asymptomatic osteochondroma, and treated him successfully by excising the osteochondroma and performing a saphenous vein graft after resecting obstructed vein.

• The Journal of the Korean bone and joint tumor society
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• v.1 no.2
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• pp.171-180
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• 1995

Recently vascularized fibular transfer has been used in the treatment of bone tumor that are more than six centimeter in length. With refinements in microsurgical techniques and understanding of the biological and biomechanical characteristics of vascularized bone graft, the success rate of this procedure was increased. Fifteen bone tumor patients, sixteen cases seen from Apr. 1979 to Jun. 1995 were managed by means of vascularized bone graft at Kyung Hee University Hospital. Ten cases were done intercalary graft and the others were done osteoarticular graft. the ratio of male and female was 6 : 9, and mean age was 20.4 years old at operation. Mean follow up period was 5 years 4 months(range 17 months to 16 years 2 months) and mean graft length was 13.8cm. Duration for union was 5.3 months(range 3 months to 1 year) and over-all rate of union at the last follow up examination was 93.8%. Sufficient hypertrophy of grafted bone was obtained in all cases at the time of last follow up as compared to initial size of grafted bone. Several complications were found such as stress fractures, recurrence. Vascularized fibular transfer for the treatment of bone tumor is a valuable procedure in appropriately selected patients.

• The Journal of the Korean bone and joint tumor society
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• v.10 no.1
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• pp.45-49
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• 2004

Chondroblastoma is a benign chondroid-forming tumor usually originating in the epiphysis. The base of metatarsal bone contains neither an epiphysis nor a secondary ossification center and so is the rare site of chondroblastoma. Here, we present a case of chondroblastoma of the base of fifth metatarsal bone in 34-year-old man. Histologically, the osteoclast-like giant cells were abundant enough to simulate a giant cell tumor. And the chondroid intercellular matrix was intermixed but scanty. However, the background mononuclear cells showed irregular and indented nuclei with longitudinal clefts and positive immunoreactivity for S-100 protein, as the evidence of chondroblasts.

• The Journal of the Korean bone and joint tumor society
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• v.17 no.2
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• pp.91-94
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• 2011

Bizarre parosteal osteochondromatous proliferation (BPOP) otherwise known as Nora's lesion, is a benign surface tumor of the small tubular bone of the hands and feet with high probability of local recurrence. The report of BPOP in the foot is very rare in our country. We report a case of BPOP of proximal phalanx of right $3^{rd}$ toe in 44-year-old female, successfully managed by en-bloc marginal excision with a review of the literatures.

• The Journal of the Korean bone and joint tumor society
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• v.5 no.4
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• pp.201-207
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• 1999

Malignant tumors of the hand are very rare. Between 1989 and 1998, 17 patients with malignant tumors of the hand were evaluated for clinical features, prevalence, treatment and results. The mean age was 45 years and median duration of follow-up was 38 months. A painless mass was the most common symptom and the most common lesion was the digit. Fifteen cases of soft tissue and 2 cases of bone tumor were diagnosed. On pathology, soft tissue tumors were comprised of 8 cases of malignant melanoma, 2 cases of angiosarcoma and 1 case each of malignant fibrous histiocytoma, malignant peripheral nerve sheath tumor, extraskeletal chondrosarcoma, and squamous cell carcinoma. Bone tumors were metastatic tumors and each originated from the rectal cancer or lung cancer. Lymph node involvements were noted in 4 cases of malignant melanoma and 1 case of squamous cell carcinoma. Six cases of metacarpo-phalangeal joint disarticulation and 4 cases of phalanx amputation were performed. Wide excision, ray amputation and below-elbow amputation were also performed. Three cases expired due to metastasis and progression of the original lesion. Among the surviving 14 cases, a malignant melanoma had metastasis on the axillary lymph node and 13 cases showed no local recurrence or metastasis during the follow-up.

• The Journal of the Korean bone and joint tumor society
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• v.11 no.1
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• pp.88-93
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• 2005

Malignant transformation of a solitary osteochondroma is rare, and usually takes form of a chondrosarcoma. We present a case of low grade osteosarcoma arising in a solitary osteochondroma of the right femur in a 30-year-old woman. As the lesion was initially continuous with corresponding components of the parent bone, so the possibilities of other diagnoses were excluded. After the initial excision, there were 3 times of recurrences during the follow up period of 3 years. The histologic subtypes of the recurred osteosarcomas were different each other, which were high grade chondroblastic, osteoblastic and fibroblastic respectively.

• The Journal of the Korean bone and joint tumor society
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• v.11 no.1
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• pp.82-87
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• 2005

Both neurilemmoma and neurofibroma are originated from Schwann cell. Plexiform tumor was mostly neurofibroma but Neurilemmoma which has plexiform is extremely rare. So it is important to differentiate plexiform neurilemmoma from plexiform neurofibroma, because plexiform neurilemmoma appears to have neither a significant association with neurofibromatosis nor a propensity for malignant transformation. We report two cases of plexiform neurilemmoma involving the left arm and right foot.

• The Journal of the Korean bone and joint tumor society
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• v.3 no.1
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• pp.47-55
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• 1997

During the last decade, the use of primary amputation has decreased, and a larger number of patients are being treated with resection and reconstruction with limb preservation. The advantage of chemotherapy, improvements in diagnostic imaging methods and newer techniques for reconstruction have made limb salvage an alternative to amputation for most patients with malignant bone tumor. Clinical results and functional results of the limb salvage operation of bone tumors treated at the Department of Orthopaedic Surgery, Guro Hospital, Korea university was reviewed. Eighteen bone tumors(seven giant cell tumors and eleven malignant bone tumors.) were studied over a period of five years. The limb salvage group included fourteen endoprothesis, two pasteurized autograft, one near total scapulectomy and one rotationplasty. Functional evaluation was performed according to the Enneking's modified system. The results were as followed; 1. At a mean follow-up of thirty two months (15-77 months), fourteen(83%) of the eighteen patients with limb salvage procedures had been continuously disease free. 2. There are no local recurrence but deep infection developed in two patients and three patients with distant metastasis. 3. Thirteen(87%) of the fifteen patients showed above 60% of functional results. 4. Fourteen(93%) of the fifteen patients were satisfied with the limb salvage procedures.