Adult-Type Rhabdomyoma of the Omohyoid Muscle

Figure 4

40x magnification of H&E stained histology specimen of rhabdomyoma shows tightly packed polygonal cells separated by thin fibrous septa, vascular channels, striated cytoplasm, and spider cells (arrow), characterized by a central acidophilic mass connected to a condensed rim of cytoplasm at the periphery by thin strands of cytoplasm. Mitotic figures and evidence of necrosis are absent.