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JYMS : Journal of Yeungnam Medical Science

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Hae Jeong Choi 2 Articles
Clear cell sarcoma: 1 case report.
Joon Hyuk Choi, Hae Jeong Choi, Mi Jin Kim, Duk Seop Shin, Kil Ho Cho
Yeungnam Univ J Med. 1999;16(1):108-113.   Published online June 30, 1999
DOI: https://doi.org/10.12701/yujm.1999.16.1.108
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AbstractAbstract PDF
Clear cell sarcoma is a rare soft tissue sarcoma that occurs tendons and aponeuroses, usually of the lower extremities in young adult. The exact histogenesis is not definitely established, We experienced a case of 58 year-old female who presented with a 3.2x2.2cm sized mass located in the subcutaneous tissue on the left lower thigh. The mass was well circumscribed and grayish firm. Two small satellite nodules were also seen. Histologically the tumor was composed of round to fusiform cells with clear or pale eosinophilic cytoplasm and separated into compact nests or short fascicles by delicated fibrous septa. The melanin pigments and hemosiderin were seen. Tumor cells showed positive reaction for S-100 protein and HMB-45. The ultrastructural examination showed abundant mitochondria and melanosomes.
A Clinicopathologic Review of Eight Cases of Chondroblastoma.
Joon Hyuk Choi, Hae Jeong Choi, Mi Jin Ku, Dae Hong Suh, Duk Seop Shin, Kil Ho Cho
Yeungnam Univ J Med. 1998;15(2):359-370.   Published online December 31, 1998
DOI: https://doi.org/10.12701/yujm.1998.15.2.359
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AbstractAbstract PDF
Eight cases of chondroblastoma were studied by analyzing the clinical and pathologic findings. The age of eight cases ranged from 17 to 38 years old(median age, 22.7 years old). The tumors developed in the femur (3 cases), patella (2 cases), tibia( 1 case), fibula (1 case), and ulna (1 case). The mean diameter of tumors was 4.0 cm (range, 1.5 to 8.0 cm). Grossly, tumors showed grayish brown solid area with foci of secondary aneurysmal bone cyst. Histologically, the tumor cells were round or polygonal in shape with nuclear groove. And there were chondroid differentiation(7 cases), mitosis(3 cases), calcific deposits(3 cases), secondary aneurysmal bone cyst(4 cases), hemosiderin deposits(4 cases), necrosis(3 cases), vascular invasion(1 caes) and foamy histiocytes and cholesterol cleft(1 cases). All cases showed no metastasis to lymph node and distant organ. Seven cases (87.5 %) were immunoreactive for S-100 protein. None were immunoreactive for cytokeratin.

JYMS : Journal of Yeungnam Medical Science