title: Rhabdomyosarcoma presenting as carcinocythemia.
abstract: A case of rhabdomyosarcoma presenting with circulating tumour cells (carcinocythemia) is discussed. Tumor cells must be differentiated from leukemic cells or a leukemoid reaction. If the abnormal cells appear as syncytia, tumor should be strongly suspected. Cytochemical and/or histochemical stains should also be employed to differentiate tumor cells from hematopoietic cells.
mesh_terms: D000008:Abdominal Neoplasms / Q000097:blood / Q000175:diagnosis* / Q000473:pathology; D000328:Adult; D005260:Female; D006801:Humans; D009360:Neoplastic Cells, Circulating; D012208:Rhabdomyosarcoma / Q000097:blood / Q000175:diagnosis* / Q000473:pathology; D013194:Staining and Labeling