title: [Primary pulmonary lymphoma: analysis of 18 cases].
abstract: OBJECTIVE
  To study the clinical characteristics, pathology, diagnosis and treatment of primary pulmonary lymphoma.
  
  
  METHODS
  Eighteen cases of primary pulmonary lymphoma diagnosed from Jan 1989 to Feb 2007 were retrospectively analyzed.
  
  
  RESULTS
  There were 6 males and 12 females, with a median age of 47.5 years (17-71 years). Fifteen cases were diagnosed by surgical lung biopsy; 1 by percutaneous needle lung biopsy (1/6), 1 by percutaneous needle lung biopsy and bronchoscopic examination at the same time, the other 1 by bronchoscopic examination (1/10). Histological diagnosis showed that 2 cases were Hodgkin lymphoma, 9 mucosa-associated lymphoid tissue lymphoma, 1 follicular lymphoma, 2 diffuse large B cell lymphoma 2 anaplastic large cell lymphoma, 2 non-Hodgkin lymphoma whichcould not be classified because the slides were from other hospitals. The most common symptoms were cough (9/18) and fever (6/18). ESR elevation was common (10/12). CT features included solitary or multiple nodules (14/18), patchy opacities (11/18), consolidations (5/18), pleural effusions (5/18), atelectasis (5/18), and cavities (1/18). Misdiagnosis was found in 11 patients. Treatment modalities included surgical resection, radiotherapy and chemotherapy. Median follow-up time was 11 months (10 d to 205 mon). Thirteen patients were still alive, 4 patients were lost, and 1 patient died. The prognosis was associated with the level of [25.1 x 10(9)/L(18.1 - 39. -1) x 10(9)/L in poor prognosis group, 6.7 x 10(9)/L (5.48 - 8.41) x 10(9)/L in good prognosis group, u = 0.000, P <0.05] leukocytosis (3/3 vs 1/10, P <0.05).
  
  
  CONCLUSIONS
  The clinical manifestations of primary pulmonary lymphoma are nonspecific. Misdiagnosis is common. Surgical lung biopsy is necessary for early diagnosis.
authors.affiliation: Department of Respiratory Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China.
authors.forename: Xin-Lun
authors.initials: XL
authors.lastname: Tian
authors.forename: Rui-E
authors.initials: RE
authors.lastname: Feng
authors.forename: Ju-Hong
authors.initials: JH
authors.lastname: Shi
authors.forename: Ming-Hui
authors.initials: MH
authors.lastname: Duan
authors.forename: Jing-Lan
authors.initials: JL
authors.lastname: Wang
authors.forename: Hong-Rui
authors.initials: HR
authors.lastname: Liu
authors.forename: Bo-Qiang
authors.initials: BQ
authors.lastname: Cai
authors.forename: Jin-Ming
authors.initials: JM
authors.lastname: Gao
authors.forename: Wen-Bing
authors.initials: WB
authors.lastname: Xu
authors.forename: Yuan-Jue
authors.initials: YJ
authors.lastname: Zhu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001706:Biopsy; D003952:Diagnostic Imaging; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000473:pathology*; D008223:Lymphoma / Q000175:diagnosis* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012189:Retrospective Studies; D055815:Young Adult