Fig. 7From: Hepatic pleomorphic leiomyosarcoma after surgery for gastric gastrointestinal stromal tumor: a case reportImmunohistochemical findings. Desmin was positive (a, ×200), α-smooth muscle actin (α-SMA) was slightly positive (b, ×200), and heavy-caldesmon (c, ×200) and muscle actin (HHF35) (d, ×200) was positive in 30% of the tumor tissue. Myogenic differentiation 1 (MyoD1) (e, ×200) did not present significant stainingBack to article page