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1. RHABDOMYOSARCOMA Dr. Michelle Ghert
      Osama Alshaya(PGY2)
2008/08/06 
2. Outline 
17. PLEOMORPHIC RMS  involve  biceps muscle: Only you can see soft tissue unclear mass 
18. MRI T1 MRI show mild hyperintense with isointense soft tissue tumor involving left gluteus medius muscle  
19. 51-year-old man with pleomorphic rhabdomyosarcoma of right thigh 
25. Spindle cell subtype has small round blue cells and separated by myxoid like matrix, cross striation seen under special stain . 
26. Poor Differentiated Embryonal RMSdifficult to distinguish from other small round blue cell tumors(Ewing, PNET) 
27. Botryoid cell subtypedense rhabdomyoplast subepithelial layer 
28. Alveolar subtype(classic type)small round cell floating in pseudo-alveolar space represent fibrovascular septae 
29. Pleomorphic RMSspindle shape cells (wrist watches)