CD34 and neoplasm: The tumor cells were diffuse positive for estrogen receptor (ER), progesterone receptor (PR), desmin, vimentin and CD99, focally positive for CD34 and B-cell leukemia/lymphoma 2 gene, and negative for S-100, murine double minute 2, P53, signal transducer and activator of transcription 6, epithelial membrane antigen, inhibin, calretenin, human melanoma black 45, CD10 and H-caldesmon.