title: [Clinical features and treatment outcomes of peripheral T-cell lymphoma, unspecified: a report of 78 cases].
abstract: OBJECTIVE
  To summarize the clinical features and treatment outcomes of peripheral T-cell lymphoma, unspecified (PTCL-US).
  
  
  METHODS
  The medical records of 78 patients with PTCL-US classified according to the revised European and American lymphoma (REAL) or WHO criteria, 58 males and 20 females, aged 39 (9 - 75), 46 of them (59%) being at the stages III/VI and 40 cases (51.2%) with extranodal involvement), treated from Jan 1994 to Dec 2004 in the Cancer Hospital/Institute, Chinese Academy of Medical Sciences, were retrospectively analyzed. The patients were followed up for 58 months.
  
  
  RESULTS
  Thirty patients (38%) were with high level lactate dehydrogenase (LDH). 34 cases (43. 7%) were treated with chemoradiotherapy, and 43 (55%) with chemotherapy alone. After the first line treatment the complete recovery (CR) rate and partial recovery (PR) rate were 55.1% (43/78) and 25.6% (20/78) respectively. 15 cases (19.2%) showed progressive disease (PD) or stable disease (SD). Achieving CR or PR after first-line treatment, 13 cases received autologous peripheral blood stem cell transplantation (APBSCT). The 5-year overall survival rate (OS) and 5-year progressive-free survival rate (PFS) were 41.4% and 33.8% respectively. The 5-year OS of the CR, PR, and PD/SD groups were 65.1%, 21.9%, and 0% respectively. The 5-year OS for the patients treated with first-line APBSCT was 61.5%, not significantly different from that of the patients treated with conventional dose therapy alone (52.3%, P = 0.894). Univariate analysis showed that the factors associated with a worse OS included stage III/IV (P = 0.001), high LDH (P = 0.0001), behavior state score >or= 2 (P = 0.001), and bone marrow involvement (P = 0.011). Multivariate analysis showed that LDH level was an independent factor predictive of survival (P = 0.001). International prognostic index and prognostic index for peripheral T-cell lymphoma both predicted the overall survival.
  
  
  CONCLUSIONS
  A rare lymphoma with aggressive presentation, PTCL-US responds poorly to conventional treatment. The prognosis of the cases with high risk is bad. APBSCT is safe and feasible when CR or PR is achieved after first line treatment.
authors.affiliation: Department of Medical Oncology, Cancer Hospital/Institute, Chinese Academy of Medical Sciences, Beijing 100021, China.
authors.forename: Yan-xia
authors.initials: YX
authors.lastname: Yu
authors.forename: Yuan-kai
authors.initials: YK
authors.lastname: Shi
authors.forename: Xiao-hui
authors.initials: XH
authors.lastname: He
authors.forename: Li-qiang
authors.initials: LQ
authors.lastname: Zhou
authors.forename: Sheng-yu
authors.initials: SY
authors.lastname: Zhou
authors.forename: Mei
authors.initials: M
authors.lastname: Dong
authors.forename: Feng-yi
authors.initials: FY
authors.lastname: Feng
authors.forename: Yan
authors.initials: Y
authors.lastname: Sun
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D053208:Kaplan-Meier Estimate; D016411:Lymphoma, T-Cell, Peripheral / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D012189:Retrospective Studies; D015996:Survival Rate; D016896:Treatment Outcome