Spleen
Other nonneoplastic disorders
Amyloidosis

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

Revised: 1 March 2018, last major update October 2012

Copyright: (c) 2003-2018, PathologyOutlines.com, Inc.

PubMed Search: Amyloidosis[TI] spleen[TI]

Cite this page: Mansouri, J. Amyloidosis. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/spleenamyloidosis.html. Accessed August 20th, 2018.
Definition / general
  • Usually secondary; rarely localized splenic nodules
  • Even with diffuse involvement, spleen may still retain "pitting" function that prevents appearance of Howell-Jolly bodies in peripheral blood smears (Arch Pathol Lab Med 1995;119:252)
  • Rarely can result in splenic rupture (Am J Hematol 2003;74:131)
Case reports
Gross description
  • Firm and waxy consistency
Microscopic (histologic) description
  • Deposition of pink amorphous material (amyloid) limited either to germinal follicles (sago spleen) or splenic sinusoids and surrounding connective tissue (lardaceous spleen)
Microscopic (histologic) images

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Amyloidosis in spleen and adrenal

Positive stains
  • Congo red with characteristic birefringence (apple green)
Differential diagnosis