title: Detection of the GD2+/CD56+/CD45- immunophenotype by flow cytometry in cerebrospinal fluids from a patient with retinoblastoma.
abstract: Triple-color flow cytometry with a panel of antibodies comprising GD2, CD56, and CD45 was performed to analyze cerebrospinal fluids (CSF) from a patient with retinoblastoma who was suspicious of meningeal metastasis based on clinical presentation. Our results showed that the cells in CSF demonstrated the immunophenotype positive for GD2 and CD56 but negative for CD45 antigen, which suggested the presence of CSF metastasis of retinoblastoma. At the end of eight cycles of intrathecal chemotherapy, CSF specimen was analyzed with Flow cytometry immunophenotyping (FCI) again and the result showed no detectable malignant cells with the same immunophenotype. Our conclusion is that FCI can be a quick and reliable method for the diagnosis of CSF metastasis of retinoblastoma and the immunophenotype (GD2+, CD56+, and CD45-) can be used to recognize residual retinoblastoma cells in CSF.
authors.affiliation: Division of Hematology-Oncology, Key Laboratory of Reproductive Genetics (Zhejiang University, Ministry of Education), Children's Hospital of Zhejiang University School of Medicine, Hangzhou, PR China.
authors.forename: Hongqiang
authors.initials: H
authors.lastname: Shen
authors.forename: Yongmin
authors.initials: Y
authors.lastname: Tang
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Xu
authors.forename: Hongfeng
authors.initials: H
authors.lastname: Tang
mesh_terms: D019002:CD56 Antigen / Q000134:cerebrospinal fluid* / Q000276:immunology; D002675:Child, Preschool; D005434:Flow Cytometry; D005732:Gangliosides / Q000134:cerebrospinal fluid* / Q000276:immunology; D006801:Humans; D016130:Immunophenotyping; D017493:Leukocyte Common Antigens / Q000134:cerebrospinal fluid* / Q000276:immunology; D008297:Male; D012175:Retinoblastoma / Q000134:cerebrospinal fluid* / Q000276:immunology
chemical_list: D019002:CD56 Antigen; D005732:Gangliosides; C019403:ganglioside, GD2; D017493:Leukocyte Common Antigens