Liver and intrahepatic bile ducts - tumor
Benign tumors / conditions
Reactive lymphoid hyperplasia / pseudolymphoma

Author: Deepali Jain, M.D. (see Authors page)

Revised: 20 November 2017, last major update February 2012

Copyright: (c) 2002-2017, PathologyOutlines.com, Inc.

PubMed Search: Reactive lymphoid hyperplasia pseudolymphoma liver

Cite this page: Jain, D. Reactive lymphoid hyperplasia / pseudolymphoma. PathologyOutlines.com website. http://pathologyoutlines.com/topic/livertumorreactivelymphoid.html. Accessed December 17th, 2017.
Definition / general
  • Also called pseudolymphoma, may mimic lymphoma (Mod Pathol 2010;23:244, Am J Surg Pathol 1999;23:302)
  • Rare, < 50 cases reported
  • Age range 15 - 81 years; female predominance
  • Usually incidental finding, right lobe predilection
  • Associated with chronic liver disease, extrahepatic autoimmune disorders and malignancies
  • May be concomitant hepatic and pancreatic involvement (Clin Res Hepatol Gastroenterol 2012;36:e71)
  • May be immune mediated
  • No associated systemic manifestations
  • Resection is curative
Case reports
Gross description
  • Well circumscribed, tan, nonencapsulated, solitary (multiple in 20%) rubbery nodule, 0.5 - 5.5 cm
Microscopic (histologic) description
  • Prominent lymphoid follicles with germinal centers, tingible body macrophages and polymorphic small lymphocytes
Positive stains
Negative stains
  • BCL2 does not stain germinal centers; no light chain restriction
Differential diagnosis