Caption |
Undifferentiated sarcoma, PTAH stain: PTAH stains positively identifies cross-striation in skeletal muscle fibers or tumors deriving from skeletal muscles. Cross-striation is easily identified in the fibers of the musculus panniculus carnosus entrapped by the neoplasm (used as a positive control).
NOTE: The absence of cross-striation in neoplastic cells stained with PTAH suggests that this tumor is not a rhabdomyosarcoma. |
Description |
Sarcoma, undifferentiated, subcutis |
Age at Necropsy |
147 days |
Contributor |
Mikaelian I (J:94320) |
Pathologist |
Mikaelian I (J:94320) |
Method |
Mallory's phosphotungstic acid hematoxylin (PTAH) |
