• The Journal of the Korean bone and joint tumor society
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• v.9 no.1
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• pp.69-76
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• 2003

Purpose: This study was designed to provide the data base for the diagnosis and treatment of the foot tumor by investigation of the clinical and pathological characteristics and distribution of the foot tumor. Materials and Methods: 142 foot tumors of 141 patients were studied. All patients were diagnosed with surgical biopsy. We investigated clinical and pathological characteristics and epidemiologic distribution of the foot tumor by reviewing the medical records and imaging materials. The location of the tumors were classified with zone of Kirby et al. Results: 75 patients were female and 66 were male. The average age of the patients was 33.2 years old. Benign soft tissue tumors were the most as 68 cases, and followed by 57 benign bone tumors, 12 malignant soft tissue tumors and 5 malignant bone tumors. Ganglia were the most in benign soft tissue tumors as 36 cases, subungual exostoses in benign bone tumors as 18, squamous cell carcinomas in malignant soft tissue tumors as 7, and metastatic lung cancers in malignant bone tumors as 2. The rate of pain complaints was the highest in malignant bone tumors, the duration of symptom was longest in benign soft tissue tumors, and the size of the tumor was the biggest in malignant bone tumors. Neurological symptoms were found in only 3 benign soft tissue tumors. For the zonal distribution, zone 5 was the most in 59 cases and zone 4 was the least as 10. The most numbers of the benign bone tumors located in zone 5, of benign soft tissue tumors in zone 1, of malignant bone tumors in zone 1 and 2, and of malignant soft tissue tumors in zone 5. The methods of surgical treatment included intralesional or marginal resection, curettage with or without bone graft, toe amputation, below knee amputation and limb salvage. Conclusion: The tumors of the foot were rare and various, and mostly benign (88%), but we can do proper treatment of those tumors without excluding malignant tumors by considering the age of patients, pain, duration of symptom, size of the tumors, and zonal distribution.

• Investigative Magnetic Resonance Imaging
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• v.12 no.2
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• pp.197-200
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• 2008

Intracapsular and paraarticular chondroma is a rare benign lesion of the large joints (mostly the knee). We report a case of intracapsular and paraarticular chondroma in the infrapatellar Hoffa’s fat pad that presented as a painful palpable mass in 15-year-old woman. A physical examination revealed a firm, movable and tender mass in the infrapatellar area. Magnetic resonance images showed an ovoid, well-defined, soft tissue mass with focal calcification in the infrapatellar fat pad. The final pathology revealed an intracapsular and paraarticular chondroma.

• The Journal of the Korean bone and joint tumor society
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• v.8 no.3
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• pp.76-82
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• 2002

Purpose: Benign bone tumor of the talar body have rarely been evaluated according to the therapeutic methods because of the scarcity of their incidence. Here, we report our experience of 8 cases who were treated by using of posterior approach and curettage through the posterior process of the talus. Materials and Methods: Between February 1986 and October 2001, we experienced 8 cases of benign bone tumor occurring in the talar body. They included two osteoid osteomas, two giant cell tumors, one capillary hemangioma, one chondroblastoma, one simple bone cyst, and one osteochondroma. Their mean age was 22.1 years (ranging from 10 to 41 years). Mean follow-up period was 7.7 years (ranging from 1 to 16 years). All patients were treated by using of posterior approach. Two osteoid osteomas and one osteochondroma were treated by excision of tumors. Other cases were treated with curettage through the cortical window on the posterior process of the talus. Results: There was no recurrence during the follow-up period. one infection occurred. Except this case, all patients had no pain in weight-bearing, and complete range of movement at the ankle joint was reserved in each case. Conclusion: In this study, we suppose that posterior approach to the talar body may be a safe method with minimal damage of normal tissues and sufficient of curettage is capable through the cortical window on the posterior process of the talus.

• The Journal of the Korean bone and joint tumor society
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• v.6 no.1
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• pp.47-51
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• 2000

Chondromyxoid fibroma occurring in the hand is a rare benign tumor. Radiologically and histologically, it should be differentiated from the other benign bone lesions in the hand, such as enchondroma, chondroblastoma, giant cell reparative granuloma and chondrosarcoma. This report is dealt with 59-year-old female and 19-year-old male patient presenting lesions on their digits anddescribed unusual clinical, radiological and pathological features.

• The Journal of the Korean bone and joint tumor society
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• v.13 no.2
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• pp.157-161
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• 2007

Hibernoma is a rare, benign tumor arising from vestigial remnant of brown adipose tissue. It is usually asymptomatic and slow growing. Awareness of the MR imaging may allow possible differential diagnosis prior to surgery.

• Journal of the Korean Society of Radiology
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• v.83 no.2
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• pp.406-413
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• 2022

Malignant tenosynovial giant cell tumor (TsGCT) is a rare disease that can arise as a recurrent lesion or co-exist with a benign TsGCT lesion. Here we report a rare case of malignant TsGCT in a 73-year-old male with a history of lymphoma. The tumor appeared as a superficial soft-tissue mass in the subcutaneous fat tissue of the left knee.

• The Journal of the Korean bone and joint tumor society
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• v.14 no.1
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• pp.10-16
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• 2008

With the advent of effective chemotherapy and the realization of high economic cost associated with amputation, limb salvage surgery has become the standard of treatment in children with primary malignant bone tumors. Reconstruction after resection of malignant bone tumors of children has to address the leg length inequality and also has to be durable to cope with high functional demands of young patients. Expandable endoprostheses have been used in children for achieving limb length equality with substantial risk of complications. Recently, significant advances in prosthetic designs have reduced the morbidities associated with these prostheses. The purpose of this study was to review the indications, characteristics, complications and recent developments of expandable endoprostheses used for malignant bone tumors in children.

• The Journal of the Korean bone and joint tumor society
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• v.15 no.1
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• pp.65-68
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• 2009

Proliferating trichilemmal tumor(PTT) is a rare neoplasm derived from the outer root sheath of the hair follicle. Malignant transformation is rare, but abrupt enlargement of size, infiltrative growth, and non-scalp location are suggestive of malignant PTT. Histopathologic characteristics of malignant PTT are nuclear atypia, pleomorphism, and mitotic figures. Recurrence and metastasis have been documented in malignant PTT. Wide resection of the tumor with the normal tissue and accurate follow-up is the treatment of choice of the both malignant and benign PTT. We report a 51-year-old man with the mass on right 5th finger distal phalanx for 7 years. The tumor was excised with middle phalangiectomy, and based on the histopathologic findings of the tumor, this case was diagnosed as mailignant PTT. We cannot detect recurrence and metastasis because the patient was lost to follow-up.

• The Journal of the Korean bone and joint tumor society
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• v.6 no.2
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• pp.92-97
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• 2000

Desmoplastic fibroma is a rare primary tumor of bone that histologically and biologically mimics the extra-abdominal desmoid tumor of soft tissue. This report is dealt with two cases of desmoplastic fibroma occurring in a 22-year-old male, scapular lesion and 34-year-old male, pubic lesion. Radiologically, the tumors were lucent and expansile lesions. Histologically, they contained slender spindle cells and various amounts of collagen fibers. Radical excision was done on both cases and no recurrence was reported. Because of its rarity, we report two cases of desmoplastic fibroma.

• The Journal of the Korean bone and joint tumor society
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• v.17 no.1
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• pp.1-10
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• 2011

The main goals of treatment of malignant bone tumor are the prolongation of life survival and the improvement of quality of life. In growing children, however, leg length discrepancy (LLD) is one of major problem in the treatment of malignant bone tumors. Therefore, the precise understanding of growth in children is essential, and the prediction of LLD is critical in deciding the time and options of surgery. In addition, to use the adequate method of growth expectation, periodic follow-up and collaboration with patient's parents are needed.