Clinicopathological study of 5 cases of proximal-type epithelioid sarcoma
AN Xiao-jing, SHI Qun-li, XU Yan, ZHOU Xiao-jun, LI Nan-yun, ZHOU Hang-bo, MA Heng-hui
Published 2009-05-08
Cite as Chin J Pathol, 2009,38(05): 298-301. DOI: 10.3760/cma.j.issn.0529-5807.2009.05.003
Abstract
Objective To investigate the clinicopathological characteristics,diagnosis and differential diagnoses of proximal-type epithelioid sarcoma (PES). Methods Five cases of PES were retrieved from pathology Fries. Clinical,pathologic and immunohistochemical features of the tumors were reviewed. Results One patient was female and 4 were male. Ages of the patients ranged from 19 to 46 years. The sites of the tumor involvement were vulvar (2 cases),hypogastric zone ( 1 case),anterosuperior iliac spine (1 case) and buttock (1 case). Clinically,the tumor masses were painless and progressive solitary nodules. Microscopically,the tumor cell growth was infiltrative in nature,nodular in appearnce with degenerative and necrotic ceils at the central areas. The tumors consisted of relatively uniform epithelioid cells with round or oval nuclei and eosinophilic cytoplasm,Immunohistochemically,the tumor cells were positive for vimentin (5/5),CK (4/5),EMA (4/5),β-catenin (3/5),CD34 (3/5),and S-100 protein (1/5),but were negative for SMA,MyoD1,Desmin,HMB-45,CK7 and CK20. Conclusion Definitive diagnosis of PES relies on its histopathological characteristics in conjunction with appropriate immunohistochemical findings.
Key words:
Soft tissue neoplasms; Sarcoma; Immunohistochemistry; Diagnosis
Contributor Information
AN Xiao-jing
Department of Pathology,Medical School of Nanjing University/Nanjing General Hospital of PLA,Nanjing 210002,China
SHI Qun-li
Department of Pathology,Medical School of Nanjing University/Nanjing General Hospital of PLA,Nanjing 210002,China
XU Yan
Department of Pathology,Medical School of Nanjing University/Nanjing General Hospital of PLA,Nanjing 210002,China
ZHOU Xiao-jun
Department of Pathology,Medical School of Nanjing University/Nanjing General Hospital of PLA,Nanjing 210002,China
LI Nan-yun
Department of Pathology,Medical School of Nanjing University/Nanjing General Hospital of PLA,Nanjing 210002,China
ZHOU Hang-bo
Department of Pathology,Medical School of Nanjing University/Nanjing General Hospital of PLA,Nanjing 210002,China
MA Heng-hui
Department of Pathology,Medical School of Nanjing University/Nanjing General Hospital of PLA,Nanjing 210002,China