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Table 1 Summary of phenotypical expression by immunohistochemical examination

From: Leiomyosarcoma with partial rhabdomyoblastic differentiation: First case report of primary cardiac origin

  Spindle cell Polyhedral cell
α-SMA and myogenin double negative
α-SMA (-) and myogenin (-)
69.1% 76.9%
α-SMA single positive
α-SMA (+) and myogenin (-)
28.8% 0.0%
myogenin single positive
α-SMA (-) and myogenin (+)
1.1% 23.1%
α-SMA and myogenin double positive
α-SMA (+) and myogenin (+)
1.0% 0.0%
  1. SMA: smooth muscle actin
  2. The rates of α-SMA and myogenin double negative, α-SMA single positive, myogenin single positive, and α-SMA and myogenin double positive in spindle cells were estimated as 69.1%, 28.8%, 1.1% and 1.0%, respectively.