Lymphoid hyperplasia

Reviewer: Jaleh Mansouri, M.D. (see Authors page)

Revised: 26 January 2016, last major update August 2012

Copyright: (c) 2003-2016,, Inc.

PubMed Search: Lymphoid hyperplasia appendix
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
Micro Description
  • Marked swelling and thickening of mucosa and submucosa, with virtual luminal obliteration
  • Older patients also have plasma cells and eosinophils
Micro Images

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Due to adenovirus