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Table 1 Immunohistochemistry in the differential diagnosis of PEComa tumors

From: Primary perivascular epithelioid cell tumor of the liver: new case report and literature review

  PEComa Gastrointestinal stromal tumors Carcinoma Melanoma Paraganglioma
SMA positive variable    
H-caldesmon positive     
Desmine positive variable    
HMB-45 positive    positive  
Melan-A positive    positive  
S-100 protein rarely variable   positive positive
Chromogranin A negative rarely    positive
Synaptophysin negative rarely    positive
CK negative negative positive negative  
EMA negative   positive negative  
CD117 negative positive    
CD34 negative positive