Lymph nodes - not lymphoma
Inflammatory disorders
Erythrophagocytosis

Author: Jaya Balakrishna, M.D. (see Authors page)

Revised: 8 June 2016, last major update June 2016

Copyright: (c) 2002-2016, PathologyOutlines.com, Inc.

PubMed Search: Erythrophagocytosis

Cite this page: Erythrophagocytosis. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/lymphnodeserythrophagocytosis.html. Accessed December 10th, 2016.
Definition / General
  • The ingestion or phagocytosis of red blood cells by macrophages / sinus histiocytes
  • Present in most axilla lymph nodes to some extent, marked after breast biopsy (Am J Clin Pathol 1988;90:189)
  • May also be associated with lymphoproliferative disorders
Essential Features
  • Reactive or due to trauma to the draining sites
  • Enlarged or normal sized lymph nodes
  • Sinus histiocytosis
  • Erythrocytes in the sinuses
  • Erythrophagocytosis
  • Hemosiderosis
Epidemiology
  • Common in lymph nodes after trauma to draining sites
Sites
  • Axilla
  • Other lymph node groups
Etiology
  • Post trauma to the draining sites
  • Renal diseases: malignant hypertension, chronic glomerulonephritis, pyelonephritis
  • Infections
  • Lymph node hemorrhage, congestion
  • Sinus erythrocytosis
  • Autoimmune and other immunopathologic conditions
  • Can be seen in lymph nodes with no apparent etiology
Clinical Features
  • Asymptomatic or enlarged lymph node
Diagnosis
  • Lymph node biopsy
Prognostic Factors
  • Depends on etiology
Gross Description
  • Enlarged lymph nodes
  • Brown discoloration of extensive hemosiderosis
Micro Description
  • Sinus histiocytosis
  • Sinuses contain red blood cells
  • Erythrophagocytosis
  • Hemosiderosis
Micro Images

Images hosted on other servers:

Erythrophagocytosis by the histiocytes



Lymph node - Erythrophagocytosis in a female F344 / N rat