Rhabdomyosarcoma (image) Howard Hughes Medical Institute Share Print E-Mail Caption An electron microscopy image of rhabdomyosarcoma, an aggressive childhood cancer that begins in muscles or other soft tissue, reveals the cellular interior. Credit CTI-EM Core, St. Jude Children's Research Hospital Usage Restrictions Must use with credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.