• Journal of the Korean Society of Radiology
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• v.81 no.2
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• pp.423-427
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• 2020

Angiosarcoma is a malignant endothelial cell tumor of lymphatic or vascular origin and is most commonly found in the skin and soft tissue. Primary mesenteric angiosarcoma has rarely been reported. Here, we present a case of primary mesenteric angiosarcoma manifesting as a gradually enhancing mass along with necrosis and hemorrhage.

• Journal of Chest Surgery
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• v.30 no.7
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• pp.729-732
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• 1997

A case of chest wall malignant peripheral nerve sheath tumor(MPNST) was reported in the U.S.A by Mark and coworkers6)(1991), but none in korea. MPNST accounts for approximately 10% of all soft tissue sarcoma, mostly in patients between 20 and 50 years of age. MPNST arises in association with a major nerve trunk, including the sciatic nerve, brachial plexus, and sacral plexus and the most common anatomical site is the proximal portion of the upper and lower extremity and trunk. Surgical treatment is local excision of mass in low grade sarcoma but unblock resection is necessary in high grade sarcoma. We experienced multiple huge low grade MPNST on left chest wall of a 50 years old man. The tumor and invalved chest wall were removed, and the chest wall defect(15$\times$8 cm) was reconstructed with Teflon. Postoperative course was unevenful.

• The Journal of the Korean bone and joint tumor society
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• v.15 no.2
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• pp.104-110
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• 2009

Purpose: Compared to soft tissue sarcoma, the relative risk of extraskeletal osteosarcoma is still not clear. The purpose of this study is to identify the difference in survival and local recurrence rate between two soft tissue sarcomas. Materials and Methods: Twelve patients with pathologically confirmed extraskeletal osteosarcoma were analysed. For retrospective matched case-control study, we selected 72 patients who were confirmed as high grade soft tissue sarcoma and had similar tumor location, tumor size and age to extraskeletal osteosarcoma. Results: Median age was 50 years old. Five cases were located in upper extremity, four in the buttocks, three in the lower extremity. Overall survival rate of extraskeletal osteosarcoma group and high grade soft tissue sarcoma group at 5 years were 52% and 55%. There is no significant difference (p=0.8). Local recurrence rate and metastasis rate were 58%, 67% in extraskeletal osteosarcoma group and 36%, 51% in soft tissue sarcoma group, which were not stastistically significant(p=0.2, p=0.4). Conclusion: Extraskeletal osteosarcoma have similar local recurrence, metastasis and survival rate compare to high grade soft tissue sarcoma. The number of patients of this study were too small to identify outcome of extraskeletal osteosarcoma. Further multi-institutional study should be attempted.

• The Journal of the Korean bone and joint tumor society
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• v.15 no.2
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• pp.178-183
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• 2009

Angiosarcoma is a very rare disease of soft tissue sarcoma, and angiosarcoma arising in a region of chronic lymphedema is referred to as Stewart-Treves syndrome. it typically occurs in postmastectomy lymphedema of the arm and sporadically in a lymphedematous leg. The prognosis, even with wide surgical excision and subsequent radiotherapy, is poor. The authors experienced a case of angiosarcoma in a chronically lymphedematous leg which had undergone hysterectomy due to cervical cancer 17 years ago and lymphedema of leg persists for about 16 years. We report a case of angiosarcoma with a brief review of the literature.

• The Journal of the Korean bone and joint tumor society
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• v.17 no.2
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• pp.95-99
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• 2011

The development of different entities of soft tissue sarcoma in one patient is rare. It usually affects head and neck or abdominal region, whereas those affecting the extremities are much rarer. We describe a patient with double primary presentation of liposarcoma and Ewing's sarcoma in extremity. This case implies that sarcoma patients are at increased risk of a second malignancy, and this implies a need to search for occult tumors during follow up.

• Journal of the Korean Society of Radiology
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• v.81 no.5
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• pp.1227-1233
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• 2020

Synovial sarcoma is a malignant soft tissue tumor that usually involves the extremities, particularly near the knees; a synovial sarcoma originating in the chest wall is extremely rare. We describe a 26-year-old woman diagnosed with a synovial sarcoma originating in the chest wall, based on CT and MRI findings. Contrast-enhanced CT images revealed a small, well-defined enhancing mass with calcification, in the subpleural area. This lesion was initially diagnosed as a benign tumor; however, the patient developed sudden severe pain with spontaneous bleeding and hemothorax, suggesting the possibility of malignancy. MRI revealed a multilobulated mass with a fluid-fluid level, which characterizes a synovial sarcoma.

• The Journal of the Korean bone and joint tumor society
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• v.11 no.2
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• pp.219-223
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• 2005

Mesenchymal chondrosarcoma is very rare and mostly occurs in lower extremity, especially femur, head and face, and pelvis in order. An eleven-year old male patient suffered from left heel pain for several months and underwent biopsy at another hospital. A Malignant bone tumor was suspected, so the patient was transferred to our hospital. We reviewed the outside pathologic slide, which revealed the diagnosis of mesenchymal chondrosarcoma. It was treated by a below knee amputation. Three months later, a chest computed tomography (CT) revealed multiple metastatic nodules in both lungs. All metastatic nodules were surgically excised and the patient received postoperative chemotherapy. As far as our knowledge, mesenchymal chondrosarcoma in the calcaneus is the first case in the world. Thus, we report a case of mesenchymal chondrosarcoma in the calcaneus with thorough review of documents.

• The Journal of the Korean bone and joint tumor society
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• v.14 no.2
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• pp.192-197
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• 2008

It is well understood that liposarcoma is most common in soft tissue sarcomas. It usually develop proximally in the extremities and most patients are older than 50 years. We report a case of huge liposarcoma which develop on left thigh of 67-year-old man. There was no evidence of metastasis and the tumor was successfully removed by marginal resection. Patient's height is 153 cm and weight is 43 kg, but the tumor's size is $34{\times}20{\times}9\;cm$ and weight is 2.82 kg. The Mass is severely huge in compare with patient's height and weight. But, There are few reports regarding the correlation between tumor-size and pathologic differentiation. Pathological examination reveals a well differentiated liposarcoma. The patient is still asymptomatic at 6-months follow up.

• Journal of Chest Surgery
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• v.29 no.4
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• pp.454-457
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• 1996

The Incidence of synovial sarcoma Is very low but sarcoma Is a well-defined entity, which occurs primarily around large Joints and usually in association with tendon sheaths, bursae or the capsule. Recently we experienced a case of synovial sarcoma which invaded the right femoral vein of 433 5-year-old man. The tumor was widely excised incl ding the invaded femoral vein, and vein reconstruction was done using saphenous vein graft. The postoperative course was uneventful without intractable edema nor disability.

• Journal of the Korean Society of Radiology
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• v.14 no.6
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• pp.741-746
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• 2020

To investigate the radiation dose sensitivity in extremity radiatioin therapy depending on rice cultivar which have different size and shape of grains, plan results are compared that used rice bolus Korean and Thai rice. Phantoms that are each no bolus, Korean rice bolus, Thai rice bolus were used and prescribed 100 cGy to isocenter and checked the point dose of 12 points of interest of each phantoms. The meane dose are 103.57±1.98 cGy in Thai rice bolus using, 104.27±2.12 cGy in Korean rice bolus and 104.99±6.40 cGy in phantom without bolus. Dose distribution of Thai and Korean rice bolus differed significantly in Wilcoxon's Signed Rank test (p=.011). It has been confirmed that that the bolus using Thai rice, which has a small grain size, shows a more even dose distribution.