title: Characteristics of indolent non-Hodgkin lymphoma in patients with type 1 human immunodeficiency virus infection.
abstract: BACKGROUND
  There is recent evidence that the incidence of indolent non-Hodgkin lymphoma (NHL) appears to be increased in persons with the acquired immunodeficiency syndrome (AIDS). The current study was conducted to describe the clinical, immunologic, and pathologic characteristics of indolent B-cell lymphoma in patients infected with the human immunodeficiency virus (HIV).
  
  
  METHODS
  The current report was a retrospective study of 10 cases of indolent NHL identified from the AIDS-Lymphoma Registry at the University of Southern California School of Medicine. These patients were compared with 336 consecutive patients with systemic intermediate/high-grade AIDS-related NHL who were diagnosed and treated at a single institution.
  
  
  RESULTS
  The pathology of the indolent cases included follicular lymphoma (five patients), small lymphocytic lymphoma (two patients), and one case each of mucosa-associated lymphoid tissue (MALT), monocytoid B-cell, and marginal zone lymphoma. When comparing the indolent lymphomas with the intermediate/high-grade AIDS-NHL cases, no differences were observed with regard to demographic characteristics or history of prior opportunistic infection. HIV patients with indolent lymphomas were found to have a significantly higher median CD4+ lymphocyte count compared with patients with intermediate/high-grade NHL (531 /mm3 vs. 90 /mm3) (P < 0.0001). Bone marrow involvement was significantly more common in indolent NHL cases (50%) versus intermediate/high-grade NHL cases (17%) (P = 0.02). The median survival for patients with indolent NHL was significantly longer compared with patients with intermediate/high-grade NHL (66.8 months vs. 7.1 months) (P = 0.007).
  
  
  CONCLUSIONS
  Indolent lymphomas occurring in patients infected with HIV appear to differ from intermediate/high-grade lymphomas with regard to immune status and propensity for bone marrow involvement and prolonged survival. The median survival in the group of HIV-seropositive patients with indolent NHL examined in the current study was found to be comparable to that reported in HIV-negative individuals.
authors.affiliation: Department of Medicine and Pathology, University of Southern California Keck School of Medicine, Los Angeles, California, USA. hornor@hsc.usc.edu
authors.forename: Alexandra M
authors.initials: AM
authors.lastname: Levine
authors.forename: Saeed
authors.initials: S
authors.lastname: Sadeghi
authors.forename: Byron
authors.initials: B
authors.lastname: Espina
authors.forename: Anil
authors.initials: A
authors.lastname: Tulpule
authors.forename: Bharat
authors.initials: B
authors.lastname: Nathwani
mesh_terms: D000328:Adult; D000368:Aged; D019046:Bone Marrow Neoplasms / Q000473:pathology*; D005260:Female; D015658:HIV Infections / Q000150:complications*; D015497:HIV-1 / Q000472:pathogenicity*; D006801:Humans; D016393:Lymphoma, B-Cell / Q000276:immunology* / Q000473:pathology* / Q000821:virology; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D016019:Survival Analysis