RT Journal Article SR Electronic T1 Granular cell myoblastoma: positive staining for carcinoembryonic antigen. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 219 OP 224 DO 10.1136/jcp.32.3.219 VO 32 IS 3 A1 S Shousha A1 T Lyssiotis YR 1979 UL http://jcp.bmj.com/content/32/3/219.abstract AB An immunoperoxidase technique for the detection of carcinoembryonic antigen was applied to 10 cases of granular cell myoblastoma. Consistent, strong, intracytoplasmic granular staining, which can be easily interpreted, was obtained in all cases. Schwannomas, neurofibromas, dermatofibromas, and leiomyomas were negative. The test is helpful in confirming doubtful cases. The results tend to support the suggestion that granular cell myoblastoma is derived from perineural rather than endoneural cells.