Florid granulomatous reaction in Epstein-Barr virus-positive nonendemic Burkitt lymphomas: report of four cases

Am J Surg Pathol. 2004 Mar;28(3):379-83. doi: 10.1097/00000478-200403000-00011.

Abstract

Epithelioid cell granulomas have been reported in association with a wide range of neoplasms including malignant lymphomas. In lymphoma, this refers mainly to Hodgkin disease and T-cell-derived non-Hodgkin lymphomas where a granulomatous reaction is probably evoked by aberrant cytokine production in the tumor cells or other cells composing the tumor background. Here we report on four cases of sporadic Burkitt lymphoma with unusual florid granulomatous reaction. In all samples, the tumor cells were admixed with numerous epithelioid cells that formed clusters and granulomatous lesions. No microorganisms could be detected at the tissue level, and there were no clinical or laboratory indications of an underlying immunodeficiency. The lymphomas harbored a specific morphology and immunophenotype of Burkitt lymphoma, and the presence of translocation breakpoint in MYC gene was confirmed by interphase fluorescence in situ hybridization. In all four patients, the lymphoma was associated with Epstein-Barr virus infection, detected by EBER in situ hybridization and the latency I phenotype as defined by lack of expression of LMP1. All four patients were treated with polychemotherapy, achieved a complete remission, and are alive without evidence of disease. We draw attention to this unusual phenomenon as it caused difficulties in interpretation and delayed diagnosis and hypothesize on the possible role of Epstein-Barr virus products.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use
  • Biomarkers, Tumor / analysis
  • Burkitt Lymphoma / complications
  • Burkitt Lymphoma / drug therapy
  • Burkitt Lymphoma / pathology*
  • Child
  • Child, Preschool
  • Endemic Diseases*
  • Female
  • Granuloma / drug therapy
  • Granuloma / pathology*
  • Granuloma / virology
  • Herpesvirus 4, Human / genetics
  • Herpesvirus 4, Human / isolation & purification*
  • Humans
  • Immunohistochemistry
  • In Situ Hybridization
  • Male
  • Middle Aged
  • Neoplasm Staging
  • RNA, Messenger / analysis
  • RNA, Viral / analysis
  • Treatment Outcome

Substances

  • Biomarkers, Tumor
  • Epstein-Barr virus encoded RNA 1
  • Epstein-Barr virus encoded RNA 2
  • RNA, Messenger
  • RNA, Viral