Appendix
Other nonneoplastic
Lymphoid hyperplasia


Topic Completed: 1 August 2012

Minor changes: 20 August 2019

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PubMed Search: Lymphoid hyperplasia appendix

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Cite this page: Mansouri J. Lymphoid hyperplasia. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/appendixlymphoidhyperplasia.html. Accessed July 24th, 2021.
Definition / general
  • Normal appendix is rich in lymphoid tissue
  • Hyperplasia may be associated with acute appendicitis (uncertain if cause or effect)
Gross description
  • May be present at entrance to cecum
Microscopic (histologic) description
  • Marked swelling and thickening of mucosa and submucosa, with virtual luminal obliteration
  • Older patients also have plasma cells and eosinophils
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