Benign Smooth Muscle Tumors (Leiomyomas) of Deep Somatic Soft Tissue

Figure 2

Immunohistochemistry of a benign smooth muscle tumor (leiomyoma) of deep somatic soft tissue of the extremity: the lesional cells are strongly and diffusely positive for smooth muscle actin (a), desmin (b), and caldesmon (c) and negative for S100 (d) and SOX-10 (not shown).

(a)

(b)

(c)

(d)