title: [Clinical characteristics and survival of peripheral T-cell lymphoma-not otherwise specified: a report of 57 cases].
abstract: OBJECTIVE
  To analyze the clinical characteristics and survival data of 57 patients with peripheral T-cell lymphoma-not otherwise specified (PTCL-NOS).
  
  
  METHODS
  The medical records of 57 patients with PTCL-NOS classified according to the revised REAL-WHO criteria, treated from Jan 1993 to Dec 2007 at the First and the Third affiliated Hospitals of Medical School of Xi'an Jiaotong University, were retrospectively evaluated by K-M univariate and COX multivariate analysis.
  
  
  RESULTS
  39 of the patients (68.4%) were males and 18 (31.6%) were females, aged 44 (3 - 88). Nine of the 57 patients (15.8%) were treated with chemo-radiotherapy, 43 (75.4%) with chemotherapy, 3 (5.3%) with radiotherapy, and 2 with supported treatment alone (2.5%). The overall response rate was 87.3%, with a complete remission (CR) rate of 60.0% in 55 evaluable cases. The 1-, 3-, and 5-year overall survival (OS) rates were 67.0%, 48.0% and 24.3%, respectively, with a median follow-up of 30.4 months (ranged 1-100 months). The median survival time (MST) was 36.0 months. Multivariate analysis showed that the prognostic index for T cell lymphoma (PIT) score was an independent prognostic factor for PTCL-NOS (P < 0.05), but bone marrow involvement, performance status, extranodal involvement, stage, B symptom were not independent prognostic factors.
  
  
  CONCLUSIONS
  Although conventional chemotherapy yields a high response rate for PTCL-NOS, the long-term survival is still low and further investigation for optional treatment is needed.
authors.affiliation: Department of Medical Oncology, the First Affiliated Hospital of Medical School of Xi'an Jiaotong University, Xi'an 710061, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Chen
authors.forename: Dan-feng
authors.initials: DF
authors.lastname: Dong
authors.forename: Yin-ying
authors.initials: YY
authors.lastname: Wu
authors.forename: Hui-yun
authors.initials: HY
authors.lastname: Huang
authors.forename: Jing
authors.initials: J
authors.lastname: Liang
authors.forename: En-xiao
authors.initials: EX
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001853:Bone Marrow / Q000473:pathology*; D002648:Child; D002675:Child, Preschool; D003131:Combined Modality Therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016411:Lymphoma, T-Cell, Peripheral / Q000188:drug therapy* / Q000473:pathology / Q000532:radiotherapy*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D016017:Odds Ratio; D016016:Proportional Hazards Models; D012074:Remission Induction; D012189:Retrospective Studies; D015996:Survival Rate; D055815:Young Adult