title: [Fine needle aspiration cytology diagnosis of extramedullary leukemic infiltration].
abstract: OBJECTIVE
  To assess the diagnostic accuracy of fine needle aspiration cytology (FNAC) in extramedullary leukemic infiltration.
  
  
  METHODS
  The results of FNAC from 65 cases of extramedullary leukemic infiltration were reviewed and analyzed.
  
  
  RESULTS
  In the 65 cases studied, there were 24 cases of acute lymphoblastic leukemia (ALL), 25 cases of acute myelogenous leukemia (AML), 6 cases of chronic lymphocytic leukemia (CLL) and 10 cases of chronic granulocytic leukemia (CML). The commonest site of infiltration was lymph node, which accounted for 73.8% of all cases.
  
  
  CONCLUSIONS
  Accurate cytologic diagnosis of extramedullary leukemic infiltration relies on detailed morphologic assessment as well as correlation with clinical examination and other relevant laboratory findings, especially in patients whose initial symptom being a local mass. Leukemic infiltration, which represents proliferation of primitive cells, should be distinguished from non-Hodgkin's lymphoma. Morphologic assessment by oil immersion lens and examination of peripheral blood smears is useful in this respect.
authors.affiliation: Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
authors.forename: Wan-Xin
authors.initials: WX
authors.lastname: Chen
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Yong
authors.initials: Y
authors.lastname: Xu
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Fan
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D044963:Biopsy, Fine-Needle; D002648:Child; D002675:Child, Preschool; D003581:Cytodiagnosis / Q000379:methods; D005260:Female; D006801:Humans; D007223:Infant; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000473:pathology; D015464:Leukemia, Myelogenous, Chronic, BCR-ABL Positive / Q000473:pathology; D015470:Leukemia, Myeloid, Acute / Q000473:pathology*; D017254:Leukemic Infiltration; D008198:Lymph Nodes / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D010306:Parotid Gland / Q000473:pathology; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000473:pathology*; D013737:Testis / Q000473:pathology