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The Korean Journal of Cytopathology 2004;15(1): 65-69.
Imprint Cytologic Features of Epithelioid Sarcoma: A Case Report.
Young Ran Shim, Joon Hyuk Choi
1Department of Pathology, Yeungnam University, Young Chun Hospital, Young Chun Korea. yrsap@med.yu.ac.kr
2Department of Pathology, Youngnam University, College of Medicine, Daegu, Korea.
Epithelioid sarcoma is a malignant soft tissue neoplasm with an uncertain histogenesis. We report the imprint cytologic features of epithelioid sarcoma in the left shoulder of a 29-year-old male patient. Imprint cytologic findings showed dissociated and loose aggregates of anaplastic epithelioid cells on the necrotic, bloody, and inflammatory background. Tumor cells were round to polygonal shaped. Tumor cells had vesicular nuclei with abundant cytoplasm. The nuclei were irregular in shape and often eccentrically located. Some tumor cells were oval to spindle shaped. Binucleated and multinucleated cells were found. Intracytoplasmic vacuoles were present. On immunohistochemical stain, the tumor cells were positive for epithelial membrane antigen, vimentin, and CD34.
Key Words: Epithelioid sarcoma; Cytology; Soft tissue; Imprint