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Table 2 Main points of differential diagnosis

From: Primary synovial sarcoma of the right heart involving the tricuspid valve in an elderly Chinese woman: a case report

Diseases Medical history Morphology Immunohistochemistry FISH (SS18)
CK S-100 SMA SOX10 TLE1 Calretinin
Primary cacdiac biphasic SS No biphasic + +/- - -/+ + - Yes
Metastatic carcinosarcoma Yes biphasic + - +/- - - - No
Metastatic myoepithelial carcinoma Yes biphasic + + + - - - No
Mesothelioma No biphasic + - - - - + No
MPNST with epithelial differentiation No biphasic + + - + +/- - No