title: [Analysis on clinicopathologic characteristics of 216 primary extranodular non-Hodgkin's lymphoma in head and neck].
abstract: OBJECTIVE
  To study the clinicopathologic characteristic of the primary extranodular non Hodgkin's lymphoma in head and neck.
  
  
  METHODS
  Clinical manifestation and the characteristic of clinicopathology of 216 extranodular non-Hodgkin's lymphoma patients in head and neck were analyzed retrospectively.
  
  
  RESULTS
  The age of thirty-one to sixty and seventy-one to eighty years old were more common age range in the group of patients. Nasal cavity was the most commonly primary involved site (95 cases, 44.0%), secondly was tonsil (47 cases, 21.8%). The most common histologic subtype was NK/T cell lymphoma, which accounted for 49.5% (107 cases) of cases, secondly was diffuse large B cell lymphoma (DLBCL, 58 cases, 26.7%). The most common histologic subtype in different stach groups respectively is: NK/T cell lymphoma in nasal cavity (74 cases,77.9%), DLBCL in paranasal sinus (6 cases, 50.0%), DLBCL in tonsil (27 cases, 57.4%), NK/T cell lymphoma in nasopharynx (17 cases, 44.7%), and DLBCL in lingual root (5 cases, 45.4%).
  
  
  CONCLUSIONS
  We conclude that primary extranodular non-Hodgkin's lymphoma is common in head and neck patients. There is characteristic in age, primary involved site and histologic subtype, which is helpful to understand these characteristic for pathologic diagnosis.
authors.affiliation: Department of Pathology, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China.
authors.forename: Xiaojin
authors.initials: X
authors.lastname: He
authors.forename: Cheng
authors.initials: C
authors.lastname: Tian
authors.forename: Dongmei
authors.initials: D
authors.lastname: Yang
authors.forename: Xinji
authors.initials: X
authors.lastname: Xie
authors.forename: Honggang
authors.initials: H
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005260:Female; D006258:Head and Neck Neoplasms / Q000473:pathology*; D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D055815:Young Adult