Methotrexate-associated lymphoproliferative disorder demonstrating composite lymphoma of EBV-negative diffuse large B-cell lymphoma and EBV-positive mucocutaneous ulcer

J Clin Exp Hematop. 2020;60(1):11-16. doi: 10.3960/jslrt.19038.

Abstract

Other iatrogenic immunodeficiency-associated lymphoproliferative disorders induced by immunosuppressive drugs, such as methotrexate (MTX-LPD), exhibit numerous pathological findings. We report the case of an 81-year-old Japanese woman diagnosed with MTX-LPD exhibiting two distinct pathological features from two different sites. Excisional biopsy of the left cervical lymph node revealed EBV-negative diffuse large B-cell lymphoma and biopsy of a pharyngeal ulcer revealed EBV-positive mucocutaneous ulcer. She was treated using an R-CHOP regimen and maintained complete remission for years. This case demonstrates the heterogeneous pathology of MTX-LPD and suggests the necessity of multiple biopsy.

Keywords: EBV-positive mucocutaneous ulcer; Epstein-Barr virus; Other iatrogenic immunodeficiency-associated lymphoproliferative disorders; diffuse large B-cell lymphoma; methotrexate.

Publication types

  • Case Reports

MeSH terms

  • Aged, 80 and over
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
  • Composite Lymphoma / chemically induced*
  • Composite Lymphoma / complications
  • Composite Lymphoma / diagnosis
  • Composite Lymphoma / drug therapy
  • Cyclophosphamide / therapeutic use
  • Doxorubicin / therapeutic use
  • Epstein-Barr Virus Infections / complications
  • Epstein-Barr Virus Infections / diagnosis
  • Female
  • Humans
  • Immunosuppressive Agents / adverse effects*
  • Lymphoma, Large B-Cell, Diffuse / chemically induced*
  • Lymphoma, Large B-Cell, Diffuse / complications
  • Lymphoma, Large B-Cell, Diffuse / diagnosis
  • Lymphoma, Large B-Cell, Diffuse / drug therapy
  • Lymphoproliferative Disorders / chemically induced
  • Lymphoproliferative Disorders / complications
  • Lymphoproliferative Disorders / diagnosis
  • Lymphoproliferative Disorders / drug therapy
  • Methotrexate / adverse effects*
  • Pharynx / drug effects
  • Pharynx / pathology
  • Prednisone / therapeutic use
  • Rituximab / therapeutic use
  • Ulcer / chemically induced
  • Ulcer / complications
  • Ulcer / diagnosis
  • Vincristine / therapeutic use

Substances

  • Immunosuppressive Agents
  • R-CHOP protocol
  • Rituximab
  • Vincristine
  • Doxorubicin
  • Cyclophosphamide
  • Prednisone
  • Methotrexate