A Challenging Case of Metastatic Intra-Abdominal Synovial Sarcoma with Unusual Immunophenotype and Its Differential Diagnosis
Joint Authors
Katalin, Uhrin
Salamon, Ferenc
Fillinger, János
Papp, Gergő
Sápi, Zoltán
Changchien, Yi-Che
Fónyad, László
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-08-27
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
The primary and metastatic gastrointestinal synovial sarcoma is rare with a wide differential diagnosis.
It usually expresses cytokeratins EMA, BCL2 with an occasional CD99, and S100 positivity but not desmin.
We present a case of metastatic synovial sarcoma with unusual immunophenotype causing diagnostic challenges.
The tumor cells showed focal cytokeratin, EMA, and, unexpectedly, desmin positivity.
Additional intranuclear TLE-1 positivity and negativity for CD34 and DOG-1 were also identified.
A diagnosis of monophasic synovial sarcoma was confirmed by using FISH break-apart probe.
RT-PCR revealed the SYT-SSX1 fusion gene.
Intra-abdominal synovial sarcoma, either primary or metastatic, with unusual desmin positivity raises the diagnostic challenge, since a wide range of differential diagnoses could show a similar immunophenotype (leiomyosarcoma, desmoid tumor, myofibroblastic tumor, and rarely GIST etc.).
Typical morphology and focal cytokeratin/EMA positivity should alert to this tumor, and FISH and RT-PCR remain the gold standard for the confirmation.
American Psychological Association (APA)
Changchien, Yi-Che& Katalin, Uhrin& Fillinger, János& Fónyad, László& Papp, Gergő& Salamon, Ferenc…[et al.]. 2012. A Challenging Case of Metastatic Intra-Abdominal Synovial Sarcoma with Unusual Immunophenotype and Its Differential Diagnosis. Case Reports in Pathology،Vol. 2012, no. 2012, pp.1-4.
https://search.emarefa.net/detail/BIM-497976
Modern Language Association (MLA)
Changchien, Yi-Che…[et al.]. A Challenging Case of Metastatic Intra-Abdominal Synovial Sarcoma with Unusual Immunophenotype and Its Differential Diagnosis. Case Reports in Pathology No. 2012 (2012), pp.1-4.
https://search.emarefa.net/detail/BIM-497976
American Medical Association (AMA)
Changchien, Yi-Che& Katalin, Uhrin& Fillinger, János& Fónyad, László& Papp, Gergő& Salamon, Ferenc…[et al.]. A Challenging Case of Metastatic Intra-Abdominal Synovial Sarcoma with Unusual Immunophenotype and Its Differential Diagnosis. Case Reports in Pathology. 2012. Vol. 2012, no. 2012, pp.1-4.
https://search.emarefa.net/detail/BIM-497976
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-497976