title: Retroperitoneal synovial sarcoma.
abstract: Retroperitoneal synovial sarcomas are very rare. The authors describe a 39-year-old male with a primary retroperitoneal synovial sarcoma showing a monophasic pattern. Immunohistochemically, the tumor cells were positive for cytokeratin AE1/AE3, epithelial membrane antigen, vimentin, S-100 protein, CD99 and calretinin. The differential diagnosis, clinical evolution and principles of treatment are shortly discussed.
authors.affiliation: Department of Pathology, Railroad Hospital, Cluj-Napoca.
authors.forename: I
authors.initials: I
authors.lastname: Domşa
authors.forename: Doiniţa
authors.initials: D
authors.lastname: Crişan
authors.forename: C D
authors.initials: CD
authors.lastname: Olinici
mesh_terms: D000328:Adult; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage / Q000627:therapeutic use*; D003606:Dacarbazine / Q000008:administration & dosage; D004317:Doxorubicin / Q000008:administration & dosage; D006801:Humans; D007069:Ifosfamide / Q000008:administration & dosage; D008297:Male; D008407:Mast Cells / Q000473:pathology; D015080:Mesna / Q000008:administration & dosage; D008938:Mitosis; D012186:Retroperitoneal Neoplasms / Q000188:drug therapy* / Q000473:pathology*; D013584:Sarcoma, Synovial / Q000188:drug therapy / Q000473:pathology* / Q000601:surgery; D013899:Thoracic Neoplasms / Q000188:drug therapy / Q000473:pathology* / Q000601:surgery
chemical_list: D003606:Dacarbazine; D004317:Doxorubicin; D015080:Mesna; D007069:Ifosfamide