title: Diagnosis of lymphoma by fine-needle aspiration cytology using the revised European-American classification of lymphoid neoplasms.
abstract: BACKGROUND
  Recent changes in the classification of non-Hodgkin lymphoma (NHL) emphasize the diagnostic importance of cytomorphology, immunophenotyping, and molecular findings in addition to histology. These changes have allowed for a greater role of fine-needle aspiration cytology (FNA) in the diagnosis of NHL.
  
  
  METHODS
  A review of the English language literature regarding the use of FNA in the cytodiagnosis of lymphoma was performed. The revised European-American classification of lymphoid neoplasms (REAL) was reviewed in the context of its adaptability to the cytologic diagnosis of lymphoid neoplasms.
  
  
  RESULTS
  FNA is being used more frequently in the diagnosis, staging, and follow-up of lymphoma whenever supportive studies are readily available. Cytomorphologic, immunophenotypic, and molecular criteria as well as pitfalls in the diagnosis of lymphoma by FNA have been delineated. Information was compiled into tables to facilitate correlation of criteria with the proposed REAL system.
  
  
  CONCLUSIONS
  Many cases of NHL can be diagnosed and subclassified by FNA when there is adequate immunophenotypic information. Cancer (Cancer Cytopathol)
authors.affiliation: Department of Pathology, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA.
authors.forename: N A
authors.initials: NA
authors.lastname: Young
authors.forename: T
authors.initials: T
authors.lastname: Al-Saleem
mesh_terms: D001707:Biopsy, Needle / Q000379:methods*; D003581:Cytodiagnosis; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D005629:Frozen Sections; D015321:Gene Rearrangement; D019940:Genes, bcl-1 / Q000235:genetics; D019254:Genes, bcl-2 / Q000235:genetics; D005838:Genotype; D006801:Humans; D007150:Immunohistochemistry; D016130:Immunophenotyping; D008228:Lymphoma, Non-Hodgkin / Q000145:classification / Q000175:diagnosis* / Q000473:pathology; D009367:Neoplasm Staging